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WoS SCOPUS Document Type Document Title Abstract Authors Affiliation ResearcherID (WoS) AuthorsID (SCOPUS) Author Email(s) Journal Name JCR Abbreviation ISSN eISSN Volume Issue WoS Edition WoS Category JCR Year IF JCR (%) FWCI ⓘ FWCI Update Date WoS Citation SCOPUS Citation Keywords (WoS) KeywordsPlus (WoS) Keywords (SCOPUS) KeywordsPlus (SCOPUS) Language Publication Stage Publication Year Publication Date DOI JCR Link DOI Link WOS Link SCOPUS Link
○ ○ Article ⓘ Navigating night shifts: a qualitative study of exploring sleep experiences and coping strategies among nurses ⓘ BackgroundUnderstanding the experiences and coping strategies employed by nurses working night shifts is essential for developing effective interventions to mitigate sleep disturbances. However, actionable and reliable strategies for improving sleep quality remain elusive. This study aimed to explore the sleep experiences and coping strategies of nurses working rotating night shifts.MethodsThis qualitative descriptive study utilized semi-structured individual interviews with 15 nurses working rotating night shifts at three hospitals in South Korea. Data were collected between October 2022 and February 2023 and analyzed using qualitative content analysis.ResultsFour key themes emerged, including difficulty sleeping due to night shifts, distress due to difficulty sleeping, strategies to improve sleep quality, and desire for organizational change. Participants reported a range of coping strategies to enhance sleep quality while managing the challenges of shift work. These strategies included creating behaviors and environments to promote sleep, finding a balance between sleep and activity time, embracing irregular sleep patterns, and asking others for help.ConclusionsDespite employing various coping strategies, nurses working night shifts continued to face persistent sleep difficulties. While they recognized night shifts as an inherent aspect of their profession and demonstrated adaptability, they still sought to overcome their sleep challenges. These findings highlight the urgent need for organizational and institutional measures to address sleep-related issues among night shift nurses. ⓘ Lim, Hyeonbin; Kim, Su Hyun ⓘ Kyungpook Natl Univ Hosp, Daegu, South Korea; Kyungpook Natl Univ, Coll Nursing, Daegu, South Korea; Kyungpook Natl Univ, Res Inst Nursing Sci, Coll Nursing, Daehakro 80, Daegu 41566, South Korea ⓘ kim, su/AAK-6271-2021 ⓘ 59739126300; 56664542600 ⓘ suhyun_kim@knu.ac.kr; ⓘ BMC NURSING ⓘ BMC NURS ⓘ 1472-6955 24 1 SCIE;SSCI NURSING ⓘ 2024 3.9 4.4 0 2025-05-07 ⓘ 0 0 Coping; Adaptation; Experience; Night-shift work; Qualitative study ⓘ WORKING ⓘ Adaptation; Coping; Experience; Night-shift work; Qualitative study ⓘ ⓘ English 2025 2025-04-07 10.1186/s12912-025-03001-3 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Obstacle Avoidance of a UAV Using Fast Monocular Depth Estimation for a Wide Stereo Camera ⓘ In this study, we designed an obstacle avoidance algorithm for a quadrotor unmanned aerial vehicle (UAV) equipped with a wide field-of-view (FOV) stereo camera, utilizing a learning-based depth estimation approach. Depth estimation using monocular cameras is gaining interest as a viable alternative to large and heavy sensors, such as light detection and ranging (LiDAR) sensors. However, deep learning-based depth estimation has low accuracy unless the depth estimation is done in an environment similar to that of the training data. Therefore, we first designed a depth estimation network for a wide-FOV stereo camera using two cameras. Then, we estimated the depth image using a convolutional neural network and improved the accuracy using stereo matching. We used the estimated depth images to develop a simple behavior-arbitration-based control algorithm that steers the quadrotor away from 3-D obstacles. We conducted simulations and experiments using a real drone in an indoor and outdoor environment to validate our proposed algorithm. An analysis of the experimental results showed that the proposed method could be employed for navigation in cluttered environments. ⓘ Cho, Euihyeon; Kim, Hyeongjin; Kim, Pyojin; Lee, Hyeonbeom ⓘ Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea; Gwangju Inst Sci & Technol GIST, Sch Mech & Robot Engn, Gwangju, South Korea; Ajou Univ, Dept Mech Engn, Suwon 16499, South Korea ⓘ ; Kim, Pyojin/AAC-7563-2020 ⓘ 59515003000; 59141639000; 59563842600; 55556473400 ⓘ hbeomlee@ajou.ac.kr; ⓘ IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS ⓘ IEEE T IND ELECTRON ⓘ 0278-0046 1557-9948 72 2 SCIE AUTOMATION & CONTROL SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION ⓘ 2024 7.2 4.4 0 2025-05-07 ⓘ 3 3 Estimation; Cameras; Accuracy; Collision avoidance; Convolution; Prediction algorithms; Decoding; Depth estimation; obstacle avoidance; quadrotor; wide stereo camera ⓘ ⓘ Depth estimation; obstacle avoidance; quadrotor; wide stereo camera ⓘ Aircraft control; Aircraft detection; Convolutional neural networks; Depth perception; Stereo image processing; Time difference of arrival; Aerial vehicle; Depth Estimation; Depth image; Obstacle avoidance algorithms; Obstacles avoidance; Quad rotors; Quadrotor unmanned aerial vehicles; Stereo cameras; Wide field-ofview; Wide stereo camera; Unmanned aerial vehicles (UAV) ⓘ English 2025 2025-02 10.1109/tie.2024.3429611 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ SiC 99.55%-Efficient Fanless Three-Phase Three-Level Flying Capacitor Converter ⓘ The multilevel flying capacitor converter (ML-FCC) has garnered widespread recognition and adoption across various applications over decades. However, achieving an efficiency of >= 99% in the three-level (3L) version of this topology presents a significant challenge. To address this barrier and maximize the converter's efficiency to the greatest extent possible, this article proposes three discontinuous phase-shifted pulse width modulation (DPS-PWM) techniques, which are applied to a 10 kW SiC MOSFET 3L-FCC. These modulation strategies inhibit power device switching when the waveforms reach their peak values, a region referred to as the nonswitching region (NSR) in this article. Even with a substantial load imbalance (>33%), the efficiency of the converter remains largely unaltered. The highest efficiency, achieved at 75% of full load, is approximately 99.55%, while maintaining an efficiency around 99.5% at full load, measured after one hour of fanless operation. Avoiding voltage ripple on flying capacitors (FCs), enhancing the utilization of the input dc voltage/source, and preventing losses associated with FCs and dead-time during the NSR are additional advantages of the proposed modulation approaches. ⓘ Faraji, Faramarz; Bien, Ngo Bac; Tran, Thien-Dung; Hong, Daheon; Cha, Honnyong ⓘ Kyungpook Natl Univ, Sch Energy Engn, Daegu 41566, South Korea; School of Energy Engineering, Kyungpook National University, Daegu, South Korea; School of Energy Engineering, Kyungpook National University, Daegu, South Korea; School of Energy Engineering, Kyungpook National University, Daegu, South Korea; School of Energy Engineering, Kyungpook National University, Daegu, South Korea ⓘ ; Faraji, Faramarz/J-4074-2019 ⓘ 57191226987; 59511660100; 58572374600; 57224204267; 24450248400 ⓘ faraji.u@gmail.com; bien.ngo@knu.ac.kr; tranthiendung@tnut.edu.vn; hongda1021@knu.ac.kr; chahonny@knu.ac.kr; ⓘ IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS ⓘ IEEE T IND ELECTRON ⓘ 0278-0046 1557-9948 72 8 SCIE AUTOMATION & CONTROL SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION ⓘ 2024 7.2 4.4 0 2025-05-07 ⓘ 0 0 Discontinuous PWM; multilevel flying capacitor converter (ML-FCC); ultrahigh efficient converter ⓘ NEUTRAL-POINT VOLTAGE; INVERTERS ⓘ Discontinuous PWM; multilevel flying capacitor converter (ML-FCC); ultrahigh efficient converter ⓘ Pulse width modulation; Discontinuous PWM; Flying capacitor; Flying capacitor converter; Full-load; Multilevel flying capacitor converter; Multilevels; Three phase; Three phasis; Three-level; Ultrahigh efficient converter; Capacitor bank ⓘ English 2025 2025-08 10.1109/tie.2024.3522468 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Solid State Pulsed Power Modulator With Asymmetric Bipolar Pulse and High Repetition Rate for Semiconductor Manufacturing Process ⓘ This article proposes a solid-state pulsed power modulator (PPM) with asymmetric bipolar pulses and high repetition rates for semiconductor manufacturing processes. Since the proposed PPM is based on high voltage solid-state switches (HVSSes) consisting of series connected silicon carbide (SiC) metal-oxide silicon field effect transistors (MOSFETs), it is simple to obtain variable asymmetric bipolar pulses as well as unipolar pulses. To solve the voltage unbalance problem, which is a critical challenge when the SiC MOSFETs are connected in series, a simple voltage balancing circuit is proposed. This balancing circuit shows superior features such as low loss and high reliability because it is composed of only passive components such as transformers and capacitors. In addition, the proposed PPM can achieve the high repetition rate since the soft switching of all SiC MOSFETs can be accomplished by the balancing transformer. Furthermore, the soft switching characteristic and the low loss of balancing circuit can contribute to the miniaturization of PPM by reducing the sizes of components and cooling systems. The design and implementation of 5 kV PPM with high repetition rate of 500 kHz are presented. Experiment results from the developed PPM are shown to verify the proposed works. ⓘ Son, Seong-Ho; Kwon, Chang-Hyun; Kim, Tae-Hyun; Yu, Chan-Hun; Jang, Sung-Roc; Kim, Hyoung-Suk ⓘ Univ Sci & Technol UST, Dept Energy & Power Convers Engn, Daejeon 34113, South Korea; Korea Electrotechnol Res Inst KERI, Electrophys Res Ctr, Chang Won 51543, South Korea; Kyungpook Natl Univ, Sch Energy Engn, Daegu 41566, South Korea; Univ Scienceand Technol UST, Dept Energy & Power Convers Engn, Daejeon 34113, South Korea ⓘ ; Kim, Tae/C-5935-2015; Shon, Seongho/LOI-5826-2024; Kim, Yong-Tae/HQZ-0240-2023 ⓘ 57219842388; 57825562900; 57219837559; 57190813654; 26422309700; 58740330300 ⓘ shson95@ust.ac.kr; kch5725@keri.re.kr; appleigig@gmail.com; chyu@keri.re.kr; scion10@keri.re.kr; khs@keri.re.kr; ⓘ IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS ⓘ IEEE T IND ELECTRON ⓘ 0278-0046 1557-9948 72 2 SCIE AUTOMATION & CONTROL SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;INSTRUMENTS & INSTRUMENTATION ⓘ 2024 7.2 4.4 0 2025-05-07 ⓘ 0 0 Voltage; MOSFET; Silicon carbide; Transformers; High-voltage techniques; Modulation; Capacitors; Asymmetric bipolar pulse; high repetition rate; solid state pulsed power modulator (PPM) ⓘ CONNECTED SIC MOSFETS; GATE-DRIVER; VOLTAGE; DESIGN ⓘ Asymmetric bipolar pulse; high repetition rate; solid state pulsed power modulator (PPM) ⓘ Electric transformers; Modulators; MOS devices; Power bipolar transistors; Pulsed power technology; Semiconducting silicon compounds; Semiconductor device manufacture; Semiconductor switches; Silicon wafers; Asymmetric bipolar pulse; Bipolar pulse; High repetition rate; Metal-oxide-silicon field effect transistors; Power modulators; Pulse repetition; Pulsed-power; Semiconductor manufacturing process; Solid state pulsed power modulator; Solid-state pulsed power modulators; MOSFET devices ⓘ English 2025 2025-02 10.1109/tie.2024.3417979 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ A Wireless Wearable Sensor System Based on a Silver Nanowire-Decorated Silicon Nanomembrane for Precise and Continuous Hazardous Gas Monitoring ⓘ Wearable wireless gas sensors have attracted enormous interest due to precise, real-time healthcare and environmental monitoring without temporal and spatial limitations. Among various toxic gases, detecting ammonia is crucial because of its highly hazardous nature and applicability as a noninvasive biomarker for diagnosing health conditions. In this study, silver nanowires-decorated silicon nanomembrane (AgNW-SiNM) chemiresistive gas sensor with high selectivity to ammonia is fully integrated with an ultrathin flexible Joule heater and wireless communication system to fabricate wearable wireless real-time toxic gas monitoring system. The sensor exhibits improved performance to ammonia gas, attributed to heating-induced changes in adsorption/desorption rates, along with electronic and chemical sensitization facilitated by AgNW decoration. The gas sensing system exhibits stable and high responses of approximate to 1.83, 1.47, and 1.19 on the ammonia exposure at concentrations of 10, 5, and 1 ppm even under mechanical deformations. The real-time dynamic response of the sensor is wirelessly transmitted to portable electronics and displayed on the screen. Moreover, the system alerts the users in advance through the integrated haptic interface when exposed to dangerous gas environments for early evacuation. The system paves the way for timely warnings from hazardous gas and more accurate noninvasive medical diagnosis related to respiratory disorders. ⓘ Shin, Jongwoon; Kim, Kyubeen; Min, In Sik; Sang, Mingyu; Lee, Ju Young; Hwang, Kyuhyun; Kang, Yunsung; Kim, Jongbaeg; Yu, Ki Jun ⓘ Yonsei Univ, Sch Elect & Elect Engn, 50 Yonsei Ro, Seoul 03722, South Korea; Yonsei Univ, Sch Mech Engn, 50 Yonsei Ro, Seoul 03722, South Korea; Kyungpook Natl Univ, Dept Precis Mech Engn, 2559 Gyeongsang Daero, Sangju 37224, Gyeongbuk, South Korea; Kyungpook Natl Univ, Convergence Res Ctr Mech & Chem Engn CRCMCE, 2559 Gyeongsang Daero, Sangju 37224, Gyeongbuk, South Korea; Yonsei Univ, YU Korea Inst Sci & Technol KIST Inst, Sch Elect & Elect Engn, 50 Yonsei Ro, Seoul 03722, South Korea; Pohang Univ Sci & Technol POSTECH, Biotech Ctr, 77 Cheongam Ro, Pohang 37673, Gyeongbuk, South Korea ⓘ Min, In Sik/LJL-5471-2024 ⓘ 57208036953; 57803539200; 57945630200; 57208035026; 57224014946; 58918667700; 57193683552; 55881484100; 35425006000 ⓘ kangys@knu.ac.kr; kimjb@yonsei.ac.kr; kijunyu@yonsei.ac.kr; ⓘ ADVANCED FUNCTIONAL MATERIALS ⓘ ADV FUNCT MATER ⓘ 1616-301X 1616-3028 35 15 SCIE CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER ⓘ 2024 19 4.5 2.23 2025-05-07 ⓘ 2 2 ammonia detection; real-time monitoring; silver nanowires-decorated silicon nanomembrane; wearable wireless gas sensor ⓘ NANOCOMPOSITES ⓘ ammonia detection; real-time monitoring; silver nanowires-decorated silicon nanomembrane; wearable wireless gas sensor ⓘ Biological membranes; Dyes; Fracture fixation; Gas sensing electrodes; Hard coatings; II-VI semiconductors; Nanoclay; Nanocrystalline materials; Noninvasive medical procedures; Protective coatings; Wide band gap semiconductors; Ammonia detection; Gas monitoring; Gas-sensors; Hazardous gas; Real time monitoring; Silicon nanomembranes; Silver nanowire-decorated silicon nanomembrane; Silver nanowires; Wearable sensor systems; Wearable wireless gas sensor; Silver nanowires ⓘ English 2025 2025-04 10.1002/adfm.202419110 ⓘ 바로가기 바로가기 바로가기 바로가기
○ Article ⓘ Dual-Action Antibacterial Nanoblades for Rapid Inactivation of Bioaerosols in Personal Protective Equipment ⓘ Commercial personal protective equipment (PPE) often has limited antibacterial activity that compromises its effectiveness in preventing infections. Traditional mechano-bactericidal methods deliver suboptimal performance, while photo-bactericidal methods struggle with activation requirements and durability. In this study, a dual-action antibacterial PPE, combining mechano- and photo-bactericidal strategies, have been designed to overcome these challenges. Mg–Al layered double hydroxide nanoblades (LDH-NBs) are synthesized on polydimethylsiloxane (PDMS)-coated polypropylene (PP) fabric. The PDMS coating plays a crucial role in enabling the formation of densely packed LDH-NBs, thereby implementing mechano-bactericidal action. Additionally, hydrophobic residues in the PDMS coating diffuse to the surface during heat treatment, converting the LDH-NB surface to hydrophobic. The Rose Bengal (RB)-adsorbed LDH-NBs (RB@LDH-NBs) become superhydrophobic after heat treatment, thereby exhibiting antifouling effects against various contaminants and bacteria. RB@LDH-NBs mechanically inactivate 99.5% of Escherichia coli and 95% of Staphylococcus aureus under typical respiratory flow rates and completely eradicate E. coli within 2 h of light exposure. Combining mechano- and photobactericidal effects, RB@LDH-NBs rapidly eradicate both E. coli and S. aureus within 15 min of light exposure. These outstanding bactericidal performances highlight the potential of this advanced PPE to provide robust protection against infectious diseases. © 2025 Wiley-VCH GmbH. ⓘ Park, Se Kye; Lee, Seung Yeon; Kim, Sang Bok; Kim, In Ho; Lee, Dong Uk; Shin, Jae Hak; Son, Jeong Sang; Kim, Gunwoo; Yoo, Seung Hwa; Lee, Dong Yun; Jung, Jae Hee; Choi, Dong Yun ⓘ Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, 59 Yangho-gil, Yeongcheon, Gyeongsangbuk-do, 38822, South Korea, Department of Polymer Science and Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea; Department of Mechanical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, South Korea; Department of Urban Environment Research, Eco-friendly Energy & Environment Research Division, Korea Institute of Machinery and Materials, 156 Gajeongbuk-ro, Yuseong-gu, Daejeon, 34103, South Korea; Department of Mechanical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, South Korea; Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, 59 Yangho-gil, Yeongcheon, Gyeongsangbuk-do, 38822, South Korea; Department of Mechanical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, South Korea; User Convenience Technology R&D Department, Korea Institute of Industrial Technology, 143 Hanggaul-ro, Sangnok-gu, Gyeonggi-do, Ansan, 15588, South Korea; Department of Organic Materials and Textile Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk-do, 54896, South Korea; Department of Quantum System Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk-do, 54896, South Korea; Department of Polymer Science and Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea; Department of Mechanical Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, South Korea; Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, 59 Yangho-gil, Yeongcheon, Gyeongsangbuk-do, 38822, South Korea ⓘ ⓘ 57210575824; 58617701900; 14032753100; 58616893700; 57218710149; 57355464800; 55812101700; 56587225700; 57190001859; 57211001605; 14919395900; 55566743200 ⓘ dychoi311@kitech.re.kr; jaehee@sejong.ac.kr; ⓘ Advanced Functional Materials ⓘ ADV FUNCT MATER ⓘ 1616-301X 1616-3028 SCIE CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER ⓘ 2024 19 4.5 0 2025-05-07 ⓘ 0 ⓘ ⓘ antifouling; mechano-bactericidal; nanoblade; personal protective equipment; photo-bactericidal ⓘ After-heat treatment; Antifouling paint; Fluorescent screens; Polydimethylsiloxane; Protective clothing; Anti-foulings; Antibacterials; Dual action; E. coli; Layered-double hydroxides; Mechano-bactericidal; Nanoblades; Personal protective equipment; Photo-bactericidal; Rose Bengal; Escherichia coli ⓘ English Article in press 2025 10.1002/adfm.202421728 ⓘ 바로가기 바로가기 바로가기
○ ○ Article ⓘ Enhancing Computing Capacity via Reconfigurable MoS2-Based Artificial Synapse with Dual Feature Strategy for Wide Reservoir Computing ⓘ Reservoir computing (RC) has garnered considerable interest owing to its uncomplicated network structure and minimal training costs. Nevertheless, the computing capacity of RC systems is limited by the material-dependent physical dynamics of reservoir devices. In this study, an efficient neuromorphic reservoir device with adjustable reservoir states, achieved through the development of an electrically tunable three-terminal charge trap memory, is introduced. This device utilizes molybdenum disulfide (MoS2) as the channel material and a perhydropolysilazane-based charge trap layer. Notably, the absence of a tunneling layer in the device structure enables dynamic resistive switching, characterized by outstanding endurance and an excellent memory window. Furthermore, by implementing a simple input decay and refresh scheme, a reconfigurable neuromorphic device capable of multiple feature extraction and functioning as an artificial synapse is developed. The device's efficacy is validated through device-to-system-level simulations within a hardware-based wide RC (WRC) system, resulting in an improved recognition rate in the MNIST hand-written digit recognition task from 87.6% to 91.0%, a testament to the enhanced computing capacity. This strategic approach advances the development of hardware-based WRC systems, marking a significant step toward energy-efficient reservoir computing. ⓘ Lee, Hyeonji; Oh, Jungyeop; Ahn, Wonbae; Kang, Mingu; Park, Seohak; Kim, Hyunmin; Yoo, Seungsun; Jang, Byung Chul; Choi, Sung-Yool ⓘ Korea Adv Inst Sci & Technol KAIST, Graphene 2D Mat Res Ctr, Sch Elect Engn, 291 Daehak Ro, Daejeon 34141, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, 80 Daehakro, Daegu 41566, South Korea ⓘ Choi, Sung-Yool/B-3383-2012; Jang, Byung Chul/GYV-0656-2022; Kang, Min-Gu/KIB-6394-2024 ⓘ 58561180600; 57205761271; 57218207813; 57222177877; 58068223600; 59486475800; 59486333800; 9238827900; 7408120246 ⓘ sungyool.choi@kaist.ac.kr; ⓘ ADVANCED FUNCTIONAL MATERIALS ⓘ ADV FUNCT MATER ⓘ 1616-301X 1616-3028 35 10 SCIE CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER ⓘ 2024 19 4.5 0 2025-05-07 ⓘ 0 1 charge trap memory; molybdenum disulfide (MoS2); perhydropolysilazane (PHPS); reconfigurable synapse; wide reservoir computing ⓘ PERHYDROPOLYSILAZANE ⓘ charge trap memory; molybdenum disulfide (MoS<sub>2</sub>); perhydropolysilazane (PHPS); reconfigurable synapse; wide reservoir computing ⓘ Network security; Charge trap; Charge trap memory; Molybdenum disulfide; Molybdenum disulphide (MoS2); MoS 2; Perhydropolysilazane; Reconfigurable; Reconfigurable synapse; Reservoir Computing; Trap memory; Wide reservoir computing; Reconfigurable hardware ⓘ English 2025 2025-03 10.1002/adfm.202416811 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Fabrication of Robust Forward Osmosis Membrane by Assembling FeOxCly Nanoparticles ⓘ Owing to its inherent advantages like low-energy consumption, low-fouling propensity, and high recovering ability over high-pressure-driven membrane processes, the future of membrane technology is shifting toward forward osmosis (FO). However, the utility of FO in challenging areas is hindered by the lack of suitable FO membranes. Here, the development of innovative FO membranes by depositing weakly magnetic and positively charged FeOxCly nanoparticles on a negatively charged nylon membrane (FeOx-Nyl) is reported. Remarkably, the FeOx-Nyl membrane possesses outstanding stability in an aqueous medium and survived in both acidic (pH = 3.3) and basic (pH = 12.2) solutions. Upon varying the loading amount of FeOxCly, the water flux of the FeOx-Nyl membrane varies from 27.8 to 61.3 LMH (from 5 to 30 mg). Due to its hydrophilic nature, the FeOx-Nyl membrane exhibits excellent flux recovery rates (FRR), up to approximate to 70%. The outstanding robustness and high flux of FeOx-Nyl are exploited in challenging applications like recovering reactive chemical wastes and dehydration of acetic acid. ⓘ Roy, Sonali; Deka, Priyamjeet; Gogoi, Raktim; Dey, Mrityunjoy; Mayawad, Kiran; Das, Bikash K.; Datta, Kasibhatta K. R.; Raidongia, Kalyan ⓘ Indian Inst Technol, Dept Chem, Gauhati 781039, Assam, India; Kyungpook Natl Univ, Dept Environm Engn, Daegu 41566, South Korea; SRM Inst Sci & Technol, Fac Engn & Technol, Dept Chem, Kattankulathur 603203, Tamil Nadu, India; Indian Inst Technol Guwahati, Ctr Nanotechnol, Gauhati 781039, Assam, India ⓘ Datta, K. K. R./F-3753-2011 ⓘ 58314197300; 57221998400; 57237359500; 59219447200; 58527969300; 59512182000; 15844840200; 23089147300 ⓘ kumarard@srmist.edu.in; k.raidongia@iitg.ac.in; ⓘ ADVANCED FUNCTIONAL MATERIALS ⓘ ADV FUNCT MATER ⓘ 1616-301X 1616-3028 35 4 SCIE CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER ⓘ 2024 19 4.5 0 2025-05-07 ⓘ 0 0 dehydration of acetic acid; FO membrane; forward osmosis; magnetic nanoparticles; recovery of chemical wastes ⓘ THIN-FILM NANOCOMPOSITE; GRAPHENE OXIDE; ACETIC-ACID; PERFORMANCE; WATER; COMPOSITE; ENHANCEMENT; SEPARATION ⓘ dehydration of acetic acid; FO membrane; forward osmosis; magnetic nanoparticles; recovery of chemical wastes ⓘ Chemical wastes; Membrane fouling; Nafion membranes; Osmosis membranes; Dehydration of acetic acid; Forward osmosis; Forward osmosis membranes; Fouling propensities; High pressure; Low energy consumption; Membrane process; Positively charged; Pressure driven membranes; Recovery of chemical waste; Dehydration ⓘ English 2025 2025-01 10.1002/adfm.202414087 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Long-Lasting, Steady and Enhanced Energy Harvesting by Inserting a Conductive Layer into the Piezoelectric Polymer ⓘ Flexibility, higher piezoelectric performance, and long-lasting stability of devices have a great demand in next generation energy technologies. Polyvinylidene fluoride (PVDF) polymer has a greater mechanical flexibility, but it suffers from low piezoelectric performance. Herein, sandwich-structured piezoelectric film (SS-PF) is designed by inserting the conductive poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) layer between two PVDF layers. The SS-PF based flexible piezoelectric energy harvester (f-PEH) generates higher voltage and current of 3.73 times and 4.64 times than the pristine PVDF film type f-PEH. Moreover, the SS-PF based f-PEH shows no degradation in the output voltage confirming the excellent long-lasting stability over 6 months. DFT simulation shows the occurrence of intermolecular forces between the PVDF/PEDOT:PSS interface. The electric field-dependent charges alignment in PEDOT:PSS may induce the charge accumulation at the PSS-PVDF interface and charge depletion at the PEDOT-PVDF interface leading to the change in orientation of molecular structure in PVDF. Next, the SS-PF based f-PEH is tested for a vibration sensor to monitor the vibrations of curvy pipes and machines, and its output voltages are comparable with the commercial PVDF vibration sensor to confirm the real-time use. The results present a novel design strategy, indicating a new direction for investigating piezo-polymer-based f-PEH. ⓘ Jang, HakSu; Kim, Gwang Hyeon; Jeon, Dong Won; Park, Hyeon Jun; Bae, Bitna; Alluri, Nagamalleswara Rao; Kim, Cheol Min; Baek, Changyeon; Lee, Min-Ku; Cho, Sung Beom; Lee, Gyoung-Ja; Park, Kwi-Il ⓘ Kyungpook Natl Univ, Dept Mat Sci & Met Engn, 80 Daehak Ro, Daegu 41566, South Korea; Kyungpook Natl Univ, Innovat Semicond Educ & Res Ctr Future Mobil, 80 Daehak Ro, Daegu 41566, South Korea; Ajou Univ, Dept Energy Syst Res, Suwon 16499, Gyeonggi Do, South Korea; Ajou Univ, Dept Mat Sci & Engn, Suwon 16499, Gyeonggi Do, South Korea; Kyungpook Natl Univ, Res Inst Automot Parts & Mat, 80 Daehak Ro, Daegu 41566, South Korea; Korea Atom Energy Res Inst, Nucl Syst Integr Sensing & Diag Res Div, Daejeon 34057, South Korea ⓘ Park, Kwiil/LKN-9445-2024 ⓘ 59302327400; 59303138700; 58544321600; 58859176900; 59302327300; 56527074500; 59441985400; 57095549400; 59302175900; 48461004400; 8588965200; 35280874200 ⓘ csb@ajou.ac.kr; leegj@kaeri.re.kr; kipark@knu.ac.kr; ⓘ ADVANCED FUNCTIONAL MATERIALS ⓘ ADV FUNCT MATER ⓘ 1616-301X 1616-3028 35 8 SCIE CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER ⓘ 2024 19 4.5 2.23 2025-05-07 ⓘ 1 2 interfacial polarization; PEDOT:PSS; piezoelectric energy harvesting; polarization reversal; PVDF ⓘ RECENT PROGRESS; OUTPUT ⓘ interfacial polarization; PEDOT:PSS; piezoelectric energy harvesting; polarization reversal; PVDF ⓘ Conducting polymers; Design for testability; Elastomers; Energy harvesting; Ionomers; Molecular orientation; Piezoelectric devices; Piezoelectric materials; Solar power generation; Structural dynamics; Surface discharges; Vibrations (mechanical); Ethylenedioxythiophenes; Interfacial polarization; Long lasting; Piezoelectric energy harvesters; Piezoelectric energy harvesting; Piezoelectric film; Polarization reversals; Poly(3,4-ethylenedioxythiophene) polystyrene sulphonate; Poly(styrene sulfonate); Polyvinylidene fluorides; Piezoelectricity ⓘ English 2025 2025-02 10.1002/adfm.202415501 ⓘ 바로가기 바로가기 바로가기 바로가기
○ Article ⓘ Metamaterial Adhesives-Integrated Triboelectric Nanogenerators with Enhanced and Programmable Charge Generation and Adhesion ⓘ Triboelectric nanogenerators (TENGs) harvest electrical energy from interfacial separation, yet achieving programmable and enhanced output through controlled separation mechanisms remains challenging. Here, a metamaterial adhesive-integrated TENG (MetaAdh-TENG) is presented that employs nonlinear cut architectures within an adhesive film embedded with silver nanowire (AgNW) electrodes. This structure enables spatially programmable and enhanced triboelectric charge generation and adhesion. Compared to planar counterparts, the MetaAdh-TENG exhibits a 12.8 fold increase in peak voltage (7.3 V) and a 34.8 fold enhancement in peel adhesion (202.3 N m⁻¹) by accelerating local crack velocity through crack trapping and reverse crack propagation. By tailoring the cut geometry, the charge output, adhesion strength, and their directionality can be independently and locally controlled, enabling tunable performance across a single device. These features support multifunctional applications, such as battery-free smart adhesives for fall detection and door-opening alarms, as well as roll-type systems for continuous charge generation. © 2025 The Author(s). Advanced Functional Materials published by Wiley-VCH GmbH. ⓘ Lee, Hee Jin; Kang, Dong Kwan; Kang, Junghwa; Lee, Changwook; Bartlett, Michael D.; Yeo, Junyeob; Jeong, Hoon Eui ⓘ Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea; Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea; Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea; Department of Physics, Novel Applied Nano Optics Lab, Kyungpook National University, Daegu, 41566, South Korea; Department of Mechanical Engineering, Soft Materials and Structures Lab, Virginia Tech, Blacksburg, 24061, VA, United States; Department of Physics, Novel Applied Nano Optics Lab, Kyungpook National University, Daegu, 41566, South Korea; Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea ⓘ ⓘ 57214747647; 58545398600; 59938913900; 58996575600; 54940638000; 58692645200; 35490647000 ⓘ hoonejeong@unist.ac.kr; junyeob@knu.ac.kr; mbartlett@vt.edu; ⓘ Advanced Functional Materials ⓘ ADV FUNCT MATER ⓘ 1616-301X 1616-3028 SCIE CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER ⓘ 2024 19 4.5 N/A ⓘ 0 ⓘ ⓘ interfacial crack; kirigami; mechanical metamaterials; smart adhesive; TENG ⓘ Glues; Liquid crystals; Metamaterials; Nanowires; Charge generation; Electrical energy; Interfacial cracks; Interfacial separation; Kirigami; Mechanical; Mechanical metamaterial; Nanogenerators; Smart adhesive; Triboelectric nanogenerator; Peeling ⓘ English Article in press 2025 10.1002/adfm.202506293 ⓘ 바로가기 바로가기 바로가기
○ ○ Article ⓘ Random Number Generators and Spiking Neurons from Metal Oxide/Small Molecules Heterojunction N-Shape Switching Transistors ⓘ In this study, a hybrid organic-inorganic field-effect transistor (FET) is proposed with n-type zinc-tin oxide (ZTO) and p-type dinaphtho[2,3-b:2 ',3 '-f] thieno[3,2-b]thiophene (DNTT), presenting two applications: (1) random number generator (RNG) and (2) spiking neuron. Interface challenges lead to operational instabilities such as bias stress and hysteresis due to trap site formation from oxide surface hydroxyl groups. However, these trap sites are utilized to produce unstable noise for RNG. Also, the impact of an internal interlayer is explored to mitigate instability in the negative transconductance (NTC) effect. This interlayer enhances material compatibility, improving turn-on voltage, on-off current ratio, and reducing hysteresis in the FET. These improvements highlight and maximize the robustness of NTC characteristics. Utilizing this behavior, a spiking neuron is demonstrated that emulates neuronal spiking and generates neuronal spike signals. ⓘ Seo, Juhyung; Kang, Seungme; Kumar, Divake; Shin, Wonjun; Cho, Jinill; Kim, Taesung; Kim, Yeongkwon; Jang, Byung Chul; Trivedi, Amit R.; Yoo, Hocheon ⓘ Gachon Univ, Dept Elect Engn, 1342 Seongnam Daero, Seongnam 13120, South Korea; Gachon Univ, Dept Semicond Engn, Seongnam daero 1342, 1342 Seongnam daero, Seongnam 13120, Gyeonggi Do, South Korea; Univ Illinois, Dept Elect & Comp Engn, Chicago, IL 60607 USA; Seoul Natl Univ, Interuniv Semicond Res Ctr, Dept Elect & Comp Engn, Seoul 08826, South Korea; Sungkyunkwan Univ, Dept Semicond Convergence Engn, Suwon 16419, South Korea; Sungkyunkwan Univ SKKU, Dept Mech Engn, Suwon 16419, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea ⓘ Yoo, Hocheon/ABZ-6637-2022; Jang, Byung Chul/GYV-0656-2022 ⓘ 57223360876; 58178939300; 58894056000; 57210823123; 57221634814; 15835496400; 58120005900; 9238827900; 23480816200; 56637576900 ⓘ amitrt@uic.edu; hyoo@gachon.ac.kr; ⓘ ADVANCED FUNCTIONAL MATERIALS ⓘ ADV FUNCT MATER ⓘ 1616-301X 1616-3028 35 8 SCIE CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER ⓘ 2024 19 4.5 2.23 2025-05-07 ⓘ 0 4 fluoropolymer interlayer; heterojunction; negative transconductance; neuromorphic devices; random number generator; zinc tin oxides ⓘ FIELD-EFFECT TRANSISTORS; SURFACE-ENERGY; NOISE; OXIDE; PHYSICS ⓘ fluoropolymer interlayer; heterojunction; negative transconductance; neuromorphic devices; random number generator; zinc tin oxides ⓘ Gallium phosphide; Indium phosphide; Organic field effect transistors; Organic-inorganic materials; Random number generation; Tin oxides; Zinc oxide; Fluoropolymer interlayer; Metal-oxide; Negative transconductance; Neuromorphic; Neuromorphic device; Random number generators; Small molecules; Spiking Neurones; Switching transistor; Trap sites; Heterojunctions ⓘ English 2025 2025-02 10.1002/adfm.202411348 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Tin-rich nano-fluorite evolution in bixbyite indium tin oxide ceramics ⓘ This study presents an unprecedented experimental observation of fluorite-structured nano-precipitates (NPs) within bulk ITO grains. These NPs, containing higher Sn concentrations than the ITO matrix, form coherent interfaces with the bixbyite (ITO matrix) structure, representing nanoscale compositional heterogeneities that have remained undetected. The NPs form through charge compensation, as local Sn enrichment drives oxygen interstitials to fill intrinsic oxygen vacancies of the bixbyite structure, and their features can be tuned via reduction treatment or heat treatment temperature. EXAFS analysis of samples with high NP density revealed elevated coordination numbers for Sn ions, supporting the presence of oxygen interstitials. Formation of NPs occurs during post-sintering cooling when Sn ions, initially dissolved at high temperatures, are expelled due to decreased solubility. While 2Sn center dot InO(y)i defect clusters in ITO have been previously discussed only through theoretical predictions, this study provides the experimental observation of such clusters in the form of NPs. ⓘ Oh, Seong-Uk; Kim, Dokyum; Kim, Young Ki; Lee, Ji Hoon; Lee, Tae Hoon; Heo, Young-Woo; Kim, Jeong-Joo; Lee, Joon-Hyung ⓘ Kyungpook Natl Univ, Dept Adv Mat Sci & Engn, Daegu 41566, South Korea; Ulsan Natl Inst Sci & Technol, UNIST Cent Res Facil, 50 UNIST Gil, Ulsan 44919, South Korea ⓘ ⓘ 57856319400; 57212308311; 59622173800; 55689885200; 59520114400; 7004298542; 8214705700; 57204923460 ⓘ joonlee@knu.ac.kr; ⓘ JOURNAL OF THE EUROPEAN CERAMIC SOCIETY ⓘ J EUR CERAM SOC ⓘ 0955-2219 1873-619X 45 14 SCIE MATERIALS SCIENCE, CERAMICS ⓘ 2024 6.2 4.5 0 2025-06-11 ⓘ 0 0 Indium tin oxide (ITO); Fluorite-bixbyite; Nano-precipitates; Defect clusters; Chemical etching ⓘ NANOCRYSTALLINE ITO POWDERS; RAY-ABSORPTION-SPECTROSCOPY; OXYGEN PARTIAL-PRESSURE; ELECTRICAL-PROPERTIES; X-RAY; THIN-FILMS; DEFECT STRUCTURE; IN2O3; SNO2; BEHAVIOR ⓘ Chemical etching; Defect clusters; Fluorite-bixbyite; Indium tin oxide (ITO); Nano-precipitates ⓘ Metal oxide ceramics; Nanocomposites; Sintering; Bixbyite; Chemical etching; Defect cluster; Fluorite-bixbyite; Indium tin oxide; Nanoprecipitate; Oxide ceramics; Oxide grains; Oxide matrix; Oxygen interstitials; Indium compounds ⓘ English 2025 2025-11 10.1016/j.jeurceramsoc.2025.117538 ⓘ 바로가기 바로가기 바로가기 바로가기
○ Article ⓘ Turning on Selective H2S Gas Sensing Activity in Ternary Nickel Tungstate Strongly Correlated Electron System Through Sub-Gap Band Manipulation ⓘ Sensing the precise concentration of chemicals within a complex atmosphere stands as a critical technology with far-reaching implications in environmental, agricultural, and medical domains. While sensitivity limits are pushed down to the ppb levels through diverse material tuning approaches, ensuring robust selectivity for targeted analyte gases remains a challenge due to the absence of effective methodologies. Here, a band structure modulation is presented in the selective detection of H2S utilizing NiWO4-based compound, achieved through strategically manipulating sub-gap states. The approach involves tailoring the sub-gap within NiWO4 by employing point defect engineering mechanisms of Cu substitutional and Li interstitial doping. Unlike the featureless pristine and Cu-doped NiWO4, Li/Cu-co-doped NiWO4 exhibits a sensing response to H2S gas, exhibiting an approximately six-fold increase in sensitivity. Through density functional theory calculations and Mott–Schottky analysis, it is unveiled that this high sensitivity and selectivity toward H2S stem from the generation and positioning of Cu d-orbital-derived sub-gap states, matching the reduction potential of H2S, which is triggered in the presence of substitutional Cu and interstitial Li. This result suggests a novel strategy for customizing sensing materials based on the reduction potential of analyte gases. © 2025 The Author(s). Advanced Functional Materials published by Wiley-VCH GmbH. ⓘ Lee, Seung Yong; Choa, Ha Eun; Choi, Seung Joon; Park, Chul Oh; Park, Gi Hyun; Suh, June Won; Jeong, Si Hoon; Ji, Yunseong; Jin, Changhyun; Hwang, Jeong Yun; Kim, Inseo; Park, Jihye; Bang, Joonho; Choi, Myung Sik; Choi, Hyo-Jick; Chun, Dong Won; Lee, Kimoon; Lee, Wooyoung; Lee, Kyu Hyoung ⓘ Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea; Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea; Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea; Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea; Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea; Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea; Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea; Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea; Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea; Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea; Department of Physics, Kunsan National University, Gunsan, 54150, South Korea; Department of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju, 52828, South Korea; Department of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju, 52828, South Korea, School of Materials Science and Engineering, Gyeongsang National University, Jinju, 52828, South Korea; School of Nano & Materials Science and Engineering, Kyungpook National University, Sangju, 37224, South Korea; Department of Chemical and Materials Engineering, University of Alberta, Edmonton, T6G 1H9, AB, Canada; Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea, nstitute for Convergence Research and Education in Advanced Technology, Yonsei University, Republic of Korea, South Korea; Department of Physics, Kunsan National University, Gunsan, 54150, South Korea; Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea; Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea ⓘ ⓘ 57436380000; 58071738200; 58609209400; 57224363615; 58626805000; 58626870900; 58626837500; 56954013500; 35177895100; 57215200308; 57981293800; 58626871000; 56168055600; 57190737942; 59658979300; 15047830500; 57222518881; 55498383000; 57209573421 ⓘ wooyoung@yonsei.ac.kr; khlee2018@yonsei.ac.kr; kimoon.lee@kunsan.ac.kr; ⓘ Advanced Functional Materials ⓘ ADV FUNCT MATER ⓘ 1616-301X 1616-3028 SCIE CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER ⓘ 2024 19 4.5 0 2025-05-07 ⓘ 1 ⓘ ⓘ gas sensor; H<sub>2</sub>S; NiWO<sub>4</sub>; sub-gap band ⓘ Copper; Doping (additives); Germanium compounds; III-V semiconductors; Layered semiconductors; Nickel compounds; Schottky barrier diodes; Tungsten compounds; Analyte gas; Critical technologies; Gap state; Gas sensing; Gas-sensors; H 2S; Interstitials; Reduction potential; Strongly correlated electron system; Sub-gap band; Chemical sensors ⓘ English Article in press 2025 10.1002/adfm.202425477 ⓘ 바로가기 바로가기 바로가기
○ ○ Article ⓘ Versatile Foldable Inkjet-Printed Thermoacoustic Loudspeaker on Paper ⓘ The rise of flexible electronics has sparked a demand for components, such as loudspeakers, that seamlessly integrate into various applications while maintaining their performance. However, current loudspeakers typically rely on electromechanical systems, necessitating significant space for components such as coils and magnets. This limits their flexibility and usage in thin, conformable devices. To address this, a paper-based thermoacoustic (TA) loudspeaker utilizing carbon nanotubes (CNTs) via inkjet printing is introduced. This TA loudspeaker demonstrates exceptional flexibility and durability, maintaining high acoustic performance across human-audible frequencies up to 20 kHz, even when subjected to extensive mechanical deformation. Additionally, employing inkjet printing technology streamlines their manufacturing processes, offering a cost-effective solution with scalability for mass production. Furthermore, an origami-inspired 3D folding architecture enhances the loudspeaker's portability and enables versatile shape configurations, thus broadening its utility across electronic devices. These demonstrations offer a potential solution for next-generation audio systems in flexible electronics. ⓘ Im, Hyungyu; Jo, Eunhwan; Kang, Yunsung; Kim, Jongbaeg ⓘ Yonsei Univ, Sch Mech Engn, 50 Yonsei Ro, Seoul 03722, South Korea; Kumoh Natl Inst Technol, Dept Mech Engn, 61 Daehak Ro, Gumi 39177, Gyeongbuk, South Korea; Kyungpook Natl Univ, Dept Precis Mech Engn, 2559 Gyeongsang Daero, Sangju 37224, Gyeongbuk, South Korea; Kyungpook Natl Univ, CRCMCE, 2559 Gyeongsang Daero, Sangju 37224, Gyeongbuk, South Korea ⓘ ⓘ 58918906100; 57193680294; 59820087200; 55881484100 ⓘ kangys@knu.ac.kr; kimjb@yonsei.ac.kr; ⓘ ADVANCED FUNCTIONAL MATERIALS ⓘ ADV FUNCT MATER ⓘ 1616-301X 1616-3028 35 17 SCIE CHEMISTRY, MULTIDISCIPLINARY;CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER ⓘ 2024 19 4.5 0 2025-05-07 ⓘ 0 0 inkjet printing; loudspeaker; origami; thermoacoustic; versatile form factor ⓘ ⓘ inkjet printing; loudspeaker; origami; thermoacoustic; versatile form factor ⓘ Audio systems; Ink jet printing; Loudspeakers; 'current; Acoustic performance; Electromechanical systems; Form factors; Ink jet; Ink-jet printing; Origami; Performance; Thermoacoustic; Versatile form factor; Flexible electronics ⓘ English 2025 2025-04 10.1002/adfm.202415218 ⓘ 바로가기 바로가기 바로가기 바로가기
○ ○ Article ⓘ Artificial Intelligence-Based Fully Automated Quantitative Coronary Angiography vs Optical Coherence Tomography-Guided PCI ⓘ Background: Recently developed artificial intelligence-based coronary angiography (AI-QCA, fully automated) provides real-time, objective, and reproducible quantitative analysis of coronary angiography without requiring additional time or labor. Objectives: This study aimed to evaluate the efficacy of AI-QCA-assisted percutaneous coronary intervention (PCI) compared to optical coherence tomography (OCT)-guided PCI in terms of post-PCI results. Methods: This trial enrolled 400 patients with significant coronary artery disease undergoing PCI from 13 participating centers in South Korea. Patients were randomized in a 1:1 ratio to either AI-QCA-assisted or OCT-guided PCI. The primary endpoint was the post-PCI minimal stent area (MSA) assessed by OCT. The noninferiority of AI-QCA-assisted PCI to OCT-guided PCI regarding the post-PCI MSA was tested with a noninferiority margin of 0.8 mm(2). Results: A total of 395 patients (199 in the AI-QCA group and 196 in the OCT group) were included in the primary endpoint analysis. The post-PCI MSA was 6.3 +/- 2.2 mm(2) in the AI-QCA group and 6.2 +/- 2.2 mm(2) in the OCT group (difference, -0.16; 95% CI: -0.59 to 0.28; P for noninferiority < 0.001). Other OCT-defined endpoints, such as stent underexpansion (50.8% [101/199] vs 54.6% [107/196]; P = 0.48), dissection (15.6% [31/199] vs 12.8% [25/196]; P = 0.42), and untreated reference segment disease (15.1% [30/199] vs 13.3% [26/196]; P = 0.61), were not significantly different between groups, except for a higher incidence of stent malapposition in the AI-QCA group (13.6% [27/199] vs 5.6 [11/196]; P = 0.007). Conclusions: This study demonstrated the noninferiority of AI-QCA-assisted PCI to OCT-guided PCI in achieving MSA with comparable OCT-defined endpoints. (Fully Automated Quantitative Coronary Angiography Versus Optical Coherence Tomography Guidance for Coronary Stent Implantation [FLASH]; NCT05388357). ⓘ Kim, Yongcheol; Yoon, Hyuck-Jun; Suh, Jon; Kang, Si-Hyuck; Lim, Young-Hyo; Jang, Duck Hyun; Park, Jae Hyoung; Shin, Eun-Seok; Bae, Jang-Whan; Lee, Jang Hoon; Oh, Jun-Hyok; Kang, Do-Yoon; Kweon, Jihoon; Jo, Min-Woo; Yun, Sung-Cheol; Park, Duk-Woo; Kim, Young-Hak; Park, Seung-Jung; Park, Hanbit; Ahn, Jung-Min ⓘ Yonsei Univ, Coll Med, Yongin, South Korea; Yongin Severance Hosp, Cardiovasc Ctr, Yongin, South Korea; Keimyung Univ, Dongsan Hosp, Dept Internal Med, Div Cardiol, Daegu, South Korea; Soon Chun Hyang Univ, Hosp Bucheon, Dept Cardiol, Bucheon, South Korea; Seoul Natl Univ, Bundang Hosp, Dept Internal Med, Cardiovasc Ctr, Seongnam, South Korea; Hanyang Univ, Coll Med, Dept Internal Med, Div Cardiol, Seoul, South Korea; Sejong Gen Hosp, Dept Internal Med, Div Cardiol, Bucheon, South Korea; Korea Univ, Coll Med, Cardiovasc Ctr, Dept Cardiol,Anam Hosp, Seoul, South Korea; Univ Ulsan, Coll Med, Ulsan Univ Hosp, Dept Cardiol, Ulsan, South Korea; Good Samsun Hosp, Div Gastroenterol, Busan, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Internal Med, Daegu, South Korea; Pusan Natl Univ, Pusan Natl Univ Hosp, Dept Cardiol, Busan, South Korea; Pusan Natl Univ Hosp, Med Res Inst, Busan, South Korea; Univ Ulsan, Coll Med, Asan Med Ctr, Div Cardiol, 388-1 Poongnap Dong, Seoul 138736, South Korea; Asan Med Ctr, Dept Biomed Engn, Seoul, South Korea; Univ Ulsan, Coll Med, Asan Med Ctr, Dept Prevent Med, Seoul, South Korea; Univ Ulsan, Coll Med, Asan Med Ctr, Div Biostat, Seoul, South Korea; Univ Ulsan, Coll Med, Gangneung Asan Hosp, Div Cardiol,Dept Med, Kangnung, South Korea ⓘ ; Kang, Do-Yoon/JPJ-4415-2023; Kang, Si-Hyuck/AAR-9790-2020; Yoon, HJ/IYJ-7484-2023 ⓘ 57192112249; 36175243200; 16426220500; 35740757100; 26537498200; 55641689500; 57206477539; 35273651500; 8699381000; 54581258000; 37111495600; 54782618200; 56675608900; 8597170400; 14520212200; 7403245652; 36067581900; 58808719700; 57205702848; 35408705000; 10439311900; 35273808100 ⓘ phb8012@gmail.com; drjmahn@gmail.com; ⓘ JACC-CARDIOVASCULAR INTERVENTIONS ⓘ JACC-CARDIOVASC INTE ⓘ 1936-8798 1876-7605 18 2 SCIE CARDIAC & CARDIOVASCULAR SYSTEMS ⓘ 2024 11.4 4.6 12.42 2025-05-07 ⓘ 4 5 artificial intelligence; coronary imaging; coronary intervention; quantitative coronary angiography; stent(s) ⓘ ELUTING STENT IMPLANTATION; INTRAVASCULAR ULTRASOUND; IMPACT; IVUS; INTERVENTION; MULTICENTER; LESION; AREA ⓘ artificial intelligence; coronary imaging; coronary intervention; quantitative coronary angiography; stent(s) ⓘ Aged; Artificial Intelligence; Automation; Coronary Angiography; Coronary Artery Disease; Coronary Vessels; Female; Humans; Male; Middle Aged; Percutaneous Coronary Intervention; Predictive Value of Tests; Prospective Studies; Radiographic Image Interpretation, Computer-Assisted; Reproducibility of Results; Republic of Korea; Stents; Time Factors; Tomography, Optical Coherence; Treatment Outcome; antidiabetic agent; antihypertensive agent; heparin; hydroxymethylglutaryl coenzyme A reductase inhibitor; insulin; adult; aged; Article; artificial intelligence; automation; controlled study; coronary angiography; coronary artery disease; diabetes mellitus; female; human; incidence; major clinical study; male; multicenter study; optical coherence tomography; percutaneous coronary intervention; quantitative analysis; randomized controlled trial; stent malapposition; stent underexpansion; adverse event; clinical trial; comparative study; computer assisted diagnosis; coronary artery disease; coronary blood vessel; devices; diagnostic imaging; middle aged; predictive value; prospective study; reproducibility; South Korea; stent; therapy; time factor; treatment outcome ⓘ English 2025 2025-01-27 10.1016/j.jcin.2024.10.025 ⓘ 바로가기 바로가기 바로가기 바로가기
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