Article
Nanoscience & Nanotechnology
Baowang Su, Xilin Zhang, Ronghui Luo, Xudong Chen, Jianguo Tian, Zhibo Liu
Summary: In this study, high-performance anti-ambipolar transistors based on 2D van der Waals heterostructures of black phosphorus and molybdenum disulfide are demonstrated. These transistors show apparent gate-tunable photoresponses in the visible and infrared wavelength range and exhibit strong photoresponses in the driving voltage range. The type II band alignment and photogating effect in the heterostructure enable high-performance photodetection with high detectivity and responsivity.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wenrui Xie, Mingyuan Chang, Wentong Fan, Mengli Yang, Fuli Tian, Xiaolin Xue, Xiaolei Zhao, Hao He, Xiayin Yao
Summary: In this study, an amorphous NbS4.5 (a-NbS4.5) based nanocomposite cathode was developed for all-solid-state lithium batteries. By combining with Super P, the electronic conductivity of a-NbS4.5 was improved and volume changes were suppressed. Coupled with Li7P3S11 solid electrolyte, both interfacial contact and ionic conductivity were enhanced. The a-NbS4.5/20%Super P@15%Li7P3S11 nanocomposite exhibited high reversible capacity and excellent cycling stability, showing promising potential as a cathode for all-solid-state batteries.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Engineering, Electrical & Electronic
Maiza S. Ozorio, Douglas H. Vieira, Gabriel L. Nogueira, Cibely S. Martin, Neri Alves, Carlos J. L. Constantino
Summary: This study evaluated the performance of water-gated field-effect transistors (WGFETs) with different gate electrodes, and found that the choice of gate electrode significantly impacts the main parameters of the device. Graphite pencil (GP) as the gate electrode showed the best performance, with the lowest subthreshold swing and the highest transconductance.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Engineering, Mechanical
Zhicai Hu, Jiang Wang, Xinyu Hao, Kai Li
Summary: This study presents a hardware efficient, scalable, and real-time computing strategy for implementing large-scale motif cortical network via FPGA. The information transmission in cortical network is explored from the perspective of stochastic resonance, and it is found that the network can only transmit signal when the E/I balance is lopsided. The time delay between populations mainly affects information transmission by determining the phase timestamp of signal transmission.
NONLINEAR DYNAMICS
(2022)
Article
Multidisciplinary Sciences
Rajasree Das, Md. Shah Alam, Kazi Tanvir Ahmmed
Summary: Quantum Dot Cellular Automata (QCA) is an emerging nanotechnology that relies on the behavior of electrons interacting with each other. This paper presents an efficient 3:8 decoder implemented using multilayer crossover technique in QCA, which offers higher fault tolerance, performance, and cost-effectiveness compared to existing decoders.
Article
Chemistry, Multidisciplinary
Yufeng Zhang, Jinjie Fang, Lipeng Zhang, Dong Wei, Wei Zhu, Zhongbin Zhuang
Summary: Amorphous Pd-P metal-metalloid alloy nanoparticles exhibit higher electrochemical performance in ethanol oxidation reaction compared to crystalline Pd nanoparticles, thanks to abundant defective coordination unsaturated sites and P alloying, which enhance the adsorption of OH.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Minghan Li, Chuang Dong, Yanping Ma, Hong Jiang
Summary: For the first time, a cluster-plus-glue-atom model was used to optimize the composition of lithium aluminosilicate glass-ceramics. By adjusting the ratio of {M2O3} and {Li2O}, the composition of the basic glass was optimized. After heat treatment, the crystal size, proportion, and crystallinity of the glass-ceramics changed significantly. The optimized glass-ceramics showed improved crystallinity, with a maximum crystallinity over 90%, as well as higher bending strength, microhardness, and visible light transmission rate.
Article
Chemistry, Analytical
Min Liu, Jia Yang, Juan Wang, Zhihong Liu, Chengguo Hu
Summary: This study presents a light-addressable paper-based photoelectrochemical (PEC) analytical device for on-site high-throughput biosensing. The device consists of a solar cell-type single-channel PEC system with separated detection zones, and can be produced in large quantities using a simple method. By taking advantage of the sensitive photocurrent response, an AChE-based PEC biosensing system for the on-site screening of ultratrace pesticides was established.
ANALYTICAL CHEMISTRY
(2022)
Article
Computer Science, Information Systems
Zeinab Seifoori, Hossein Asadi, Mirjana Stojilovic
Summary: This paper proposes efficient algorithms for creating power-gating clusters of FPGA routing resources using machine learning approaches, achieving significant improvement in reducing FPGA static power consumption through optimization of resource cluster selection and power-gating logic design.
Article
Chemistry, Physical
Zicong Guo, Yuanyuan Zhu, Jing Zhou, Xiaoyu Ma, Lixin Wang, Mengyao Chen, Yong Liu, Rui Xiong, Ziyu Wang, Chao Zuo, Hongjun Wang
Summary: Yttrium oxide (Y2O3) has been investigated as a functional material for resistive switching memories. However, there is a lack of understanding regarding the tuning of oxygen vacancies by various electrodes in Y2O3-based memories. In this study, non-crystalline Y2O3 films prepared through magnetron sputtering deposition were used to construct resistive switching memory devices with different structures. The devices exhibited nonvolatile bipolar resistive switching behaviors, which were dependent on the formation/rupture of conductive filaments composed of oxygen vacancies. The Y2O3-based memories with Pt/Y2O3/Pt structure showed competitive switching properties, including ultra-low set/reset voltages and high retention characteristics. The influence of different electrodes on oxygen vacancies and the morphologies of conductive filaments were discussed in detail. Additionally, physical models were proposed to clarify carrier transport mechanisms and switching behaviors for memories with different structures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Ryo Yonemoto, Rieko Ueda, Akira Otomo, Yutaka Noguchi
Summary: In a light-emitting electrochemical cell (LEC), electrochemical doping facilitates charge injection and recombination emissions, resulting in high electroluminescence (EL) intensity at low driving voltages. In this study, a nanogap LEC (nano-LEC) consisting of a light-emitting polymer (F8BT) and an ionic liquid on a gold nanogap electrode was developed. The device demonstrated high EL intensity and a low threshold voltage at 300K. At low temperatures (<285K), the delayed components of the current and EL were strongly suppressed, indicating the nano-LEC as a promising approach for molecular-scale current-induced light sources.
Article
Chemistry, Analytical
Ivan Kudashov, Sergey Shchukin, Mugeb Al-harosh, Andrew Shcherbachev
Summary: This paper presents a peripheral vascular puncture control system based on electrical impedance measurements, and proposes a decision rule of puncture identification based on the analysis of amplitude-time parameters of experimental signals. The experimental results show that the proposed method achieves an accuracy of 97%.
Article
Materials Science, Multidisciplinary
Jingyi Ma, Xinyu Chen, Yaochen Sheng, Ling Tong, Xiaojiao Guo, Minxing Zhang, Chen Luo, Lingyi Zong, Yin Xia, Chuming Sheng, Yin Wang, Saifei Gou, Xinyu Wang, Xing Wu, Peng Zhou, David Wei Zhang, Chenjian Wu, Wenzhong Bao
Summary: This study investigates a doping-free strategy using top-gated MoS2 field-effect transistors with various metal gates. Different metals with different work functions provide a convenient tuning knob for controlling the threshold voltage of the MoS2 FETs. By achieving matched electrical properties for load and driver transistors in an inverter circuit, wafer-scale MoS2 inverter arrays with optimized switching threshold voltage and voltage gain were successfully demonstrated.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Mikhail Yu. Morozov, Vyacheslav V. Popov, Denis Fateev
Summary: The study investigates the theoretical tuning of radiative damping in a periodic dual grating-gate graphene structure. By adjusting the applied dc voltage, the radiative damping of the weak plasmon mode can be changed, allowing for maximum energy conversion.
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Yen-Yu Fu, Jia-Yu Lin, Yang-Fang Chen
Summary: Resistive switching memory (RSM) is a crucial factor for the future development of the semiconductor industry due to its advantages. However, the electrical reading of the RSM array is typically in series sequence, which limits its data storage density and processing speed. To overcome this drawback, an optically and electrically controllable light-emitting RSM has been demonstrated using a tandem structure of a light-emitting RSM and a perovskite solar cell. This device offers both electrical and optical encoding and can be read optically through electroluminescence in the low-resistive state.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Kyung Yong Ko, Hyemin Kang, Wonseon Lee, Chang-Wan Lee, Jusang Park, Hee Sung Lee, Seongil Im, Han-Gil Kim, Soo-Hyun Kim, Byung-Wook Min, Hyungjun Kim
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2015)
Article
Chemistry, Multidisciplinary
Jin Sung Kim, Pyo Jin Jeon, Junyeong Lee, Kyunghee Choi, Hee Sung Lee, Youngsuk Cho, Young Tack Lee, Do Kyung Hwang, Seongil Im
Article
Chemistry, Multidisciplinary
Kyunghee Choi, Syed Ali Raza Raza, Hee Sung Lee, Pyo Jin Jeon, Atiye Pezeshki, Sung-Wook Min, Jin Sung Kim, Woojin Yoon, Sang-Yong Ju, Kimoon Leec, Seongil Im
Article
Chemistry, Multidisciplinary
Hee Sung Lee, Jae Min Shin, Pyo Jin Jeon, Junyeong Lee, Jin Sung Kim, Hyun Chul Hwang, Eunyoung Park, Woojin Yoon, Sang-Yong Ju, Seongil Im
Article
Multidisciplinary Sciences
Hyong Seo Yoon, Hang-Eun Joe, Sun Jun Kim, Hee Sung Lee, Seongil Im, Byung-Kwon Min, Seong Chan Jun
SCIENTIFIC REPORTS
(2015)
Article
Materials Science, Multidisciplinary
Pyo Jin Jeon, Sung-Wook Min, Jin Sung Kim, Syed Raza Ali Raza, Kyunghee Choi, Hee Sung Lee, Young Tack Lee, Do Kyung Hwang, Hyoung Joon Choi, Seongil Im
JOURNAL OF MATERIALS CHEMISTRY C
(2015)
Letter
Chemistry, Multidisciplinary
Jin Sung Kim, Hee Sung Lee, Seongil Im
Article
Materials Science, Multidisciplinary
Junyeong Lee, Syed Raza Ali Raza, Pyo Jin Jeon, Jin Sung Kim, Seongil Im
NPG ASIA MATERIALS
(2016)
Article
Materials Science, Multidisciplinary
Jongtae Ahn, Pyo Jin Jeon, Syed Raza Ali Raza, Atiye Pezeshki, Sung-Wook Min, Do Kyung Hwang, Seongil Im
Article
Chemistry, Multidisciplinary
Seyed Hossein Hosseini Shokouh, Atiye Pezeshki, Syed Raza Ali Raza, Hee Sung Lee, Sung-Wook Min, Pyo Jin Jeon, Jae Min Shin, Seongil Im
ADVANCED MATERIALS
(2015)
Article
Physics, Applied
Zamir Ul Hassan, Razwan Siddique, Syeda Amna Sajjad, Zeshan Adeel Umer, Shujaht Bukhari, Muhammad Anwar-Ul-Haq, Mohsin Rafique, Syed Raza Ali Raza
Summary: In this study, a type-III heterojunction based on pulsed-laser-deposited vanadium dioxide (VO2) and p-type silicon (p-Si) substrate was successfully realized, showing a large self-powered and room-temperature photoresponse to various LED wavelengths. The temperature-dependent properties of the junction exhibit a sharp transition near 337 K, corresponding to a metal-insulator phase transition, which could potentially pave the way for temperature-tunable photodetectors.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Applied
Jamal Kazmi, Poh Choon Ooi, Syed Raza Ali Raza, Boon Tong Goh, Siti Shafura A. Karim, Mohd Hazrie Samat, Min Kai Lee, M. F. Mohd, Razip Wee, Mohamad Fariz Mohamad Taib, Mohd Ambri Mohamed
Summary: In this study, theoretical and experimental analysis of Bi-Co co-doped zinc oxide nanowires (ZnO NWs) revealed that the alignment of relative spin and the location of Bi3+ and Co2+ are the primary cause of magnetism. Experimental findings indicate that NWs are mainly aligned along the c-axis, with Bi and Co existing at substitutional sites, leading to a decrease in optical band gap and an increase in electron concentration upon doping.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Raja Azhar Saeed Khan, Jamal Kazmi, Bushra Ansari, Syed Raza Ali Raza, Nadia Tabbasum, Mohd Ambri Mohamed, Jamil Kazmi, Zamir-ul Hassan, Muhammad Naeem Ahmed, Asif Majeed, Syed Manzoor Hussain Bukhari
Summary: In this study, a two-terminal and broad spectral range organic-inorganic hybrid photodetector device is fabricated, which contains N-pentylisatin-based compound coated semiconducting Zinc oxide (ZnO) nanowires (NWs). The hybrid device shows extended range absorption and enhanced photosensitivity compared to the pristine device. The conductivity of the ZnO NWs thin film is greatly reduced after coating with N-pentylisatin, indicating the role of terminating oxygen molecules of N-pentylisatin as an electron acceptor.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Automation & Control Systems
Minseong Park, Yuan Yuan, Yongmin Baek, Andrew H. Jones, Nicholas Lin, Doeon Lee, Hee Sung Lee, Sihwan Kim, Joe C. Campbell, Kyusang Lee
Summary: The proposed resistive time-of-flight sensor mimics the biological process of spike-timing-dependent plasticity to measure depth information in an analog domain, achieving accurate 3D imaging and classification. This system opens up new possibilities for energy-efficient neuromorphic vision engineering in various fields such as LiDAR, automotive, medical imaging, and augmented/virtual reality.
ADVANCED INTELLIGENT SYSTEMS
(2022)
Article
Automation & Control Systems
Hee Sung Lee, Yongmin Baek, Qiubao Lin, Joseph Minsu Chen, Minseong Park, Doeon Lee, Sihwan Kim, Kyusang Lee
Summary: Efficient defect identification is demonstrated through morphological image processing with minimal power consumption, utilizing an oxide transistor and memristor-based crossbar array for neuromorphic computing. A co-designed neuromorphic system with dynamic Gaussian blur kernel operation shows enhanced defect detection performance, achieving about 10^4 times more power-efficient computation compared to conventional CMOS-based digital implementation. The all-oxide-based memristive crossbar array offers unique potential for universal AIoT applications where conventional hardware is not suitable.
ADVANCED INTELLIGENT SYSTEMS
(2021)
