Article
Engineering, Electrical & Electronic
Chien-Hung Kuo, Jian-Tzu Yeh, Jau-Horng Chen, Yi-Jan Emery Chen
Summary: This article presents a dual-phase center-aligned 7-bit digital pulsewidth modulator for the envelope modulation of pulse-modulated polar transmitters (PMPTs). The modulator has high resolution and good output pulse nonlinearity performance.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2022)
Article
Engineering, Electrical & Electronic
Kuang-Wei Cheng, Sheng-Kai Chang, Shao-Ting Chang, Si-Lou Li, Yu-Chieh Huang
Summary: This paper proposes a low-power wireless transmitter using multi-phase injection locking and frequency multiplication techniques. It achieves multichannel support and FSK modulation through a low-frequency phase-rotation-based frequency synthesizer. The far-out phase noise is filtered through a proposed N-path filter and two-stage injection-locked ring oscillators (ILROs). Phase modulation is achieved by changing the offset frequency, and a high energy efficiency power amplifier is used for frequency multiplication.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2023)
Article
Engineering, Electrical & Electronic
Kumar Arulandu, Jean-Paul M. G. Linnartz, Xiong Deng
Summary: This article introduces a modulator for optical wireless communication via LEDs, controlled by a dual closed loop, which is designed for different applications and control strategies. The modulator designs are evaluated with rationals and verified models to optimize performance.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Optics
Yuki Yoshida, Setsuo Yoshida, Shoichiro Oda, Takeshi Hoshida, Naokatsu Yamamoto, Atsushi Kanno
Summary: In-service monitoring and adaptive digital compensation of analog imperfections in optical transponders are essential for next-generation optical coherent transmission systems. The IQ imbalance, as a notable example of analog impairments in optical IQ modulators, can be monitored using the single-pixel optical modulation analyzer (SP-OMA) technique. This work extends the concept of SP-OMA to dual-polarization IQ modulators and proposes a novel phase retrieval algorithm for identifying frequency-dependent IQ imbalances on both polarization channels.
Article
Engineering, Electrical & Electronic
Lin Xu, Wei Yu, Wei Qin, Jian-Xin Chen
Summary: This study proposes a design approach for dual-channel filters based on dual-mode dielectric resonators. The orthogonal modes are analyzed and utilized to independently construct the filtering responses for two channels, while achieving isolation between the channels. The design process is simple and efficient, allowing for arbitrary filtering orders and high design flexibility.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2022)
Article
Engineering, Electrical & Electronic
Yusi Zhu, Pan Xia, Jihang Liu, Lidong Du, Zhen Fang, Zhan Zhao
Summary: This paper introduces a polyimide-based film bulk acoustic resonator (PI-FBAR) humidity sensor, which operates in resonant frequency and reflection coefficient S-11 dual-mode. The experiments demonstrate that both modes have ultra-high sensitivity to humidity, and they can be selected or combined based on specific requirements to achieve more accurate sensing results for humidity and temperature.
IEEE SENSORS JOURNAL
(2021)
Article
Computer Science, Information Systems
Saeed Roshani, Slawomir Koziel, Sobhan Roshani, Mohammad Behdad Jamshidi, Fariborz Parandin, Stanislaw Szczepanski
Summary: This paper introduces a simple H-shaped patch Wilkinson power divider that performs well at 1.8 GHz and provides ultra wide harmonics suppression band. The divider structure employs two patch low-pass filters and three open-ended stubs, with an operating band from 1.62 GHz to 2.1 GHz and a bandwidth exceeding 480 MHz, resulting in a fractional bandwidth of 25.8 percent.
Article
Optics
Q. Li, C. P. Ho, H. Tang, M. Okano, K. Ikeda, S. Takagi, M. Takenaka
Summary: A novel Si racetrack optical modulator integrated with a III-V/Si hybrid MOS optical phase shifter was fabricated with advantages of miniaturization, low energy consumption, and high modulation bandwidth.
Article
Computer Science, Information Systems
Sean P. Nelan, Andrew Mercante, Shouyuan Shi, Peng Yao, Eliezer Shahid, Benjamin A. Shopp, Cooper D. Hurley, Mathew Zablocki, Dennis W. Prather
Summary: The research introduces a high-extinction dual-output electro-optic Mach Zehnder modulator for photon communication systems. This modulator features low loss, high efficiency, and an ultra-high extinction ratio, making it essential for low-noise operation in the future communication field.
Article
Optics
X. Liu, D. N. Wang
Summary: A whispering gallery mode resonator is demonstrated with a pair of tapered optical fibers coupled to the surfaces of two microspheres. The device is simple in structure, easy in fabrication, low in cost, and has a Q-factor of 1.3 x 10(4). It can excite the whispering gallery mode of the two microspheres when incident light is coupled to them via evanescent field.
Article
Chemistry, Physical
Chunlong Cheng, Zihan Lu, Jingwen Yang, Xiaoyue Gong, Qingqing Ke
Summary: Surface acoustic wave (SAW) strain sensors fabricated on piezoelectric substrates have attracted considerable attention due to their attractive features. In this work, a simulation study is performed on Rayleigh surface acoustic wave (RSAW) based on a stacked Al/LiNbO3 system. A SAW strain sensor with a dual-port resonator is modeled using finite element method (FEM). By analyzing the structural parameters of SAW resonators, the study elaborates the evolution of RSAW eigenfrequency, insertion loss, quality factor, and strain transfer rate. Structural optimization results in improved performance of the resonator. This work provides a systematic and reliable solution for the structural optimization of dual-port SAW resonators.
Article
Chemistry, Analytical
Lixin Jin, Hui Tang, Jin Shi, Longlong Lin, Kai Xu
Summary: This paper proposes a dual-band, dual-polarized filtering antenna using a cross-shaped dielectric strip resonator. The antenna achieves dual-polarized radiation and has a low profile. The prototype operates at 3.5 GHz and 4.9 GHz with fractional bandwidths of 5.40% and 2.03%, respectively.
Article
Computer Science, Information Systems
Hansik Oh, Jaekyung Shin, Woojin Choi, Yifei Chen, Hyeongjin Jeon, Young Chan Choi, Hyungmo Koo, Keum Cheol Hwang, Kang-Yoon Lee, Youngoo Yang
Summary: This article introduces a hybrid envelope tracking supply modulator integrated circuit based on a Class-AB linear amplifier, which can further improve efficiency while maintaining stability of voltage and temperature. Through adaptive controllers and digital controls, the overall device can operate effectively at different output power levels.
Article
Optics
Zhaobang Zeng, Lemeng Leng, Peiyan Zhao, Chenbin Zhang, Ding Ding, Dun Mao, Tingyi Gu, Wei Jiang
Summary: In a parallel-coupled dual-racetrack modulator, interference between resonant light in two resonators is utilized to achieve high extinction ratios for high-speed modulation. The modulator also enables the generation of four-level pulse-amplitude modulation without an external DAC.
Article
Engineering, Electrical & Electronic
Sam Moeini, Mahmoud Shahabadi, Arash Dana
Summary: This paper presents the design, simulation, and implementation of a compact single-port non-radiating wireless power transfer system using two coupled dielectric resonators. The system achieves optimum power transfer by utilizing a dual-dielectric resonator oscillator. At a spacing of 10 mm, the measured RF output power of the system is 13.07 dBm at 7.5 GHz, demonstrating good agreement with the proposed method of analysis. The system also provides a relatively wide bandwidth of 150 MHz at the operating frequency for simultaneous data transmission.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2023)
Review
Nanoscience & Nanotechnology
Nanxi Li, Chong Pei Ho, I-Ting Wang, Prakash Pitchappa, Yuan Hsing Fu, Yao Zhu, Lennon Yao Ting Lee
Summary: This article summarizes the modern applications of spectral imaging and spectral LIDAR systems over the past decade, while also reviewing the progress in compact systems development based on nanophotonics technology. Research indicates that these systems will drive the transition of spectral imaging and LIDAR sensing towards portable solutions for consumer electronics applications.
Article
Telecommunications
Xingwei Zhong, Kui Cai, Guanghui Song, Weijie Wang, Yao Zhu
Summary: In this letter, a novel constrained coding (CC) scheme and a deep learning (DL) aided threshold detection scheme are proposed to mitigate the sneak path (SP) problem in ReRAM arrays. The CC scheme reduces SPI and differentiates memory arrays into SPI-free and SPI-affected categories. For SPI-affected arrays, a DL detector is trained offline, and a DL-based threshold detector is proposed to avoid additional power consumption and latency. Simulation results show that the proposed schemes achieve better error rate performance than prior art detection schemes without prior knowledge of the channel.
IEEE COMMUNICATIONS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Jianming Zhao, Yuan Gao, Tan-Tan Zhang, Hyunwoo Son, Chun-Huat Heng
Summary: This article introduces a fully integrated capacitorless low-dropout regulator designed for Internet-of-Things (IoT) edge sensor applications, featuring fast response and low power consumption. By utilizing innovative time-domain signal processing and voltage control techniques, excellent performance is achieved.
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2021)
Article
Chemistry, Analytical
Doris Keh Ting Ng, Chong Pei Ho, Linfang Xu, Weiguo Chen, Yuan Hsing Fu, Tantan Zhang, Li Yan Siow, Norhanani Jaafar, Eldwin Jiaqiang Ng, Yuan Gao, Hong Cai, Qingxin Zhang, Lennon Yao Ting Lee
Summary: In this study, NDIR CO2 gas sensing was demonstrated using CMOS compatible MEMS ScAlN-based pyroelectric detectors. The results showed significant signal change and short gas response times. Introduction of humidity had minor effects on CO2 gas response.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Business
Tao Zhang, Yingchi Qu, Gang He
Summary: This paper studies the optimal pricing strategies of manufacturers and retailers in the energy industry using concepts from dynamic cooperative game theory. The results show that the optimal pricing in the noncooperative game is higher than in the cooperative game. Additionally, the cooperative game encourages greater energy consumption disparity between traditional energy products and new energy products, leading to reduced consumption of the latter.
IEEE TRANSACTIONS ON ENGINEERING MANAGEMENT
(2022)
Article
Engineering, Electrical & Electronic
Jingcheng Tao, Nan Wang, Yao Zhu, Eldwin Jiaqiang Ng, Chun-Huat Heng
Summary: This letter presents a nanowatt-level detector-first wakeup receiver using a microelectromechanical system (MEMS)-based matching network. The receiver utilizes an aluminum nitride (AlN) piezoelectric MEMS resonator to implement a high-impedance matching network, thus improving the receiver's sensitivity. The high-Q MEMS-based matching network also significantly enhances the receiver's out-of-band interference rejection. A gate-biased envelope detector is used for RF-to-baseband direct conversion. The wakeup receiver is implemented in a 180-nm CMOS process and achieves a sensitivity of -57 dBm with a 1-kbps on-off keying (OOK) data rate at 789 MHz using only 16-nW power consumption.
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Tiancheng Cao, Chen Liu, Yuan Gao, Wang Ling Goh
Summary: This paper presents a parasitic-aware modeling method for efficient and accurate simulation of Processing-in-Memory (PIM) neural networks implemented in resistive memristor crossbar arrays. The proposed method takes into consideration the impact of line resistance on the accuracy of vector-matrix multiplication (VMM) computation and multi-layer neural network inference. Experimental results show that the proposed method significantly reduces computation error and improves inference accuracy compared to uncompensated and state-of-the-art compensation methods.
IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS
(2022)
Article
Physics, Applied
Minghua Li, Huamao Lin, Kan Hu, Yao Zhu
Summary: This study investigates the effects of surface oxidation on a ScAlN film by characterizing the film microstructure and the elemental chemical states. The results show that the oxide overlayer consists of amorphous phase and small crystallites, which is different from the columnar crystalline texture in the bulk material. Additionally, the oxide overlayer increases the energy barrier at the ScAlN/metal interface.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Li Chen, Wendong Song, Weijie Wang, Hock Koon Lee, Zhixian Chen, Wenting Zhao, Yao Zhu
Summary: In this letter, the researchers utilized KrF excimer laser annealing to achieve high-performance ferroelectric Hf0.5Zr0.5O2 (HZO). The laser effectively annealed the device layer with a high heating/cooling rate without overheating the under-layer deep structures. Through numerical simulation and experiment, they carefully studied the impact of laser fluence, number of pulses, and pulse duration on the ferroelectricity of HZO. By using an ultra-low laser fluence of around 84 mJ/cm(2) and 20 pulses, they achieved a remnant polarization 2p(r) of 22 mu C/cm(2), a coercive field of approximately 1 MV/cm, and a cycling endurance >10(8) in an 8 nm ferroelectric HZO thin film. The large beam size of the KrF excimer laser enables practical and efficient wafer-scale ferroelectric HZO annealing within a short period of time.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Kai Tang, Chuanshi Yang, Yanshu Guo, Nan Wang, Yao Zhu, Ying Zhang, Eldwin Jiaqiang Ng, Joshua En-Yuan Lee, Zhongyuan Fang, Wensong Wang, Hanjun Jiang, Chun-Huat Heng, Yuanjin Zheng
Summary: This article introduces an ultralow-power microelectromechanical system (MEMS)-based transceiver and wake-up receiver. The system supports a shared antenna interface and uses adaptive fast switching technique and high-Q MEMS resonator to reduce power consumption and achieve frequency stability. The MEMS-based modulator provides LO in FSK RX for better interference filtering, and the FSK-matched filter with matching network and current-reuse LNA ensure high blocker/interference rejection with low power. The fabricated TX generates FSK signals with high output power and a data rate of up to 6 Mb/s, while the RX exhibits high sensitivity and in-band signal-to-interference ratio at 2 Mb/s data rate. Overall, the proposed system achieves significant energy efficiency improvement and is suitable for energy-efficient pico-IoT applications.
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2023)
Article
Computer Science, Software Engineering
Longlong Chen, Yulong Wang, Youheng Liu, Yutao Hu, Libin Wang, Huiwu Luo, Yuan Yan Tang
Summary: In this paper, a novel Double Graphs Regularized Multi-view Subspace Clustering (DGRMSC) method is proposed to effectively harness both the global and local structural information of multi-view data. The method utilizes a latent representation to capture the global complementary information of multiple views and performs Double Graphs Regularization (DGR) to exploit their local manifold structures simultaneously.
INTERNATIONAL JOURNAL OF WAVELETS MULTIRESOLUTION AND INFORMATION PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Li Chen, Chen Liu, Minghua Li, Wendong Song, Weijie Wang, Zichu Wang, Nan Wang, Yao Zhu
Summary: Scandium-doped aluminum nitride (AlScN) has attracted great attention for its unique properties, including improved piezoelectricity and compatibility with CMOS. It shows promising potential for next-generation RF MEMS building blocks and can be potentially used in ferroelectric memory devices.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Proceedings Paper
Acoustics
Minghua Li, Kan Hu, Huamao Lin, Yao Zhu
Summary: This paper presents the first in-plane TEM observation of the crystal grain morphology and microstructure of sputtered Sc0.2Al0.8N film. It is found that the film contains both highly (0002) textured columnar normal grains and mis-oriented abnormal grains, with the latter consuming their neighboring normal grains during the sputtering process.
INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021)
(2021)
Proceedings Paper
Computer Science, Artificial Intelligence
Jinhai Hu, Wang Ling Goh, Yuan Gao
Summary: This paper proposes a DB-LSTM neural network architecture for AIoT applications, which dynamically adjusts cell bias and performs weight quantization for portable edge device implementation. The validation results show that the model with 2-bit weights performs well on air passenger forecasting problem.
2021 IEEE 3RD INTERNATIONAL CONFERENCE ON ARTIFICIAL INTELLIGENCE CIRCUITS AND SYSTEMS (AICAS)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Doris K. T. Ng, Chong-Pei Ha, Linfang Xu, Weiguo Chen, Yuan Hsing Fu, Tantan Zhang, Li-Yan Siow, Norhanani Jaafar, Eldwin J. Ng, Yuan Gao, Hong Cai, Qingxin Zhang, Lennon Y. T. Lee
Summary: CO2 gas sensing responses were successfully measured using a CMOS-MEMS ScAlN-based pyroelectric detector with 12% Sc doped concentration, detecting a range of CO2 concentrations from 5000 ppm down to 200 ppm. Gas channel lengths were varied and the percentage change of CO2 gas response was calculated at different lengths and concentrations using N-2 as a reference gas.
2021 21ST INTERNATIONAL CONFERENCE ON SOLID-STATE SENSORS, ACTUATORS AND MICROSYSTEMS (TRANSDUCERS)
(2021)
Article
Engineering, Electrical & Electronic
Kehao Feng, Zhenghua Zhang, Guohua Bai, Xiuyuan Fan, Rongzhi Zhao, Xuefeng Zhang
Summary: This paper proposes a new method to accurately evaluate the high-frequency power loss of soft magnetic materials. Through a two-step calibration, the system is able to compensate for the phase angle discrepancy between the exciting current and induced voltage, enabling a higher power loss measurement frequency.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Mingfang Kang, Tong Liu, Hongmei Sun, Lin Li, Keliang Wang
Summary: In this study, the absorption performance of ambient nitrogenous toxic gases on a monolayer of blue phosphorus phase germanium selenide (GeSe) was investigated using density-functional theory calculations. The results showed that GeSe monolayer exhibits higher sensitivity and selectivity for the hazardous gas NO.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Yaqiong Niu, Zhicheng Zou, Longsheng Cheng, Chaofeng Ye
Summary: This paper proposes a novel method to stabilize the laser diode output using a close-loop control with two feedbacks. The proposed method performs better for long-time operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jiajie Li, Ying Liu, Zhen Chai, Qian Cao, Renjie Li, Yueyang Zhai
Summary: This study proposed an efficient and high-quality beam-splitting method based on a diffractive optical element, enabling multichannel SERF atomic magnetometers to achieve ultra-high consistency and sensitivity. It has significant applications in array biomagnetic measurement systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
E. Oliveira, C. Doering, H. Fouckhardt
Summary: With the development of Lab on a chip technology, fluid management using dispersed droplets has become an important approach. Electrowetting on dielectric (EWOD) is one method for droplet actuation, but it requires prior definition of droplet positions. Optoelectrowetting (OEW) goes further by allowing changes in electrical parameters through impinging light spots, without the need for predefined droplet positions. This study re-evaluates the key parameters of OEW and explores their effects on droplet actuation using numerical optimization methods.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Haipeng Wang, Zhiguo Wang, Gancheng Zhu, Shuai Zhang
Summary: A novel capacitive proximity skin was developed to improve the performance of robotics in handling liquid-filled containers. This skin features a flexible structure that can adapt to different grippers and seamlessly integrate with Robot Operating System. Experimental results demonstrated that this proximity skin achieved data-lossless detection and contactless measurement of liquid level, making it suitable for grasping operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Tsenguun Byambadorj, Xiangyu Zhao, Yutao Qin, Yogesh B. Gianchandani
Summary: In this research, a monolithically microfabricated Knudsen pump (KP) without suspended membranes was presented. These pumps offer improved mechanical robustness, wider process window, and simplified microfabrication process compared to previous designs. The experimental results matched the modeling results well, indicating the potential for monolithic integration onto complex lab-on-a-chip systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Hamed Karami, Saeed Karami Chemeh, Vahid Azizi, Hooman Sharifnasab, Jose Ramos, Mohammed Kamruzzaman
Summary: Aroma is a significant quality trait for pharmaceutical plants and their products, indicating the quality of the raw material. An electronic nose is an efficient approach for identifying and evaluating the aroma of essential oils. In this study, tarragon was dried at different temperatures and air velocities, and the purity of tarragon essential oil was evaluated using an electronic nose. Multivariate data analysis and artificial neural networks modeling were employed to quantify and classify the obtained essential oils.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Xiaoyang Duan, Dan Xu, Wenjun Jia, Ran Li, Bohao Sun, Ruitian Yan, Wenjie Zhao
Summary: Flower-like WO3/WS2 heterojunction materials constructed via a low-temperature in-situ oxidation method exhibit significant improvements in the detection of NO2 gas in gas sensors, along with good selectivity and reproducibility.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Peng Yu, Mengyang Zhang, Manqi You, Yuxi Gao, Landong Xiao, Yan Peng, Jingxia Lai, Zhouzhao Shi, Siwei Luo, Gencai Guo, Gang Guo
Summary: Recent studies have shown that two-dimensional Janus transition metal dichalcogenides (TMDs) have great potential for applications in gas sensors. By conducting first principles calculations, this study explores the potential application of Pd-doped monolayer HfSeS as gas sensor materials for detecting CO, CO2, NH3, and NO. The results demonstrate the good thermodynamical stability and reversible adsorption of these molecules on both pristine and Pd-doped HfSeS, with Pd-doped HfSeS showing higher sensitivity towards NO due to its metallic behavior upon NO adsorption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jinlan Yang, Linjiao Li, Jun Huang, Quan Zhang, Hiba Affane
Summary: This study proposes a method for large-scale aggregation of micro-particles by creating a vortex region using low-frequency oscillation. Experimental results show that this method can achieve a large aggregation area and has the advantages of low cost and low power consumption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jitendra Singh, Saurabh Kumar Gupta, Vinita
Summary: In this investigation, a Surface Acoustic Wave (SAW) formalin gas sensor was explored for low-level formalin gas sensing applications. The sensor showed stable response and high sensitivity to formalin gas concentration, making it a reliable and useful sensor for room temperature operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Junyao Wang, Yahao Liu, Huan Liu, Qi Hou, Jianxin Xu, Hongxu Pan, Jingran Quan, Yansong Chen, Hanbo Yang, Lixiang Li
Summary: A flexible electrode with a serpentine-shaped tetra-chiral structure was designed to improve the mechanical properties and prevent mechanical fracture of flexible electrodes. The research demonstrated that this structure reduced the maximum tensile stress by 87.19% compared to the existing tetra-chiral structure. The flexible electrode remained conductive even at a strain of 70% and showed resistance values of 5 ohm and 4.4 ohm at a bending angle of 180 degrees and after 1000 fold cycles. Furthermore, the flexible electrodes showed great potential in biological signal monitoring, particularly in collecting ECG and pulse signals.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Taihao Chen, Yong Fang, Mengru Zhu, Zhiwei Zhao, Wei Lei, Zhuoya Zhu, Helong Jiang
Summary: Flexible dual-spectral carbon nanodots/flexible n-silicon heterojunction photodetectors with high responsivity and detectivity are reported. These detectors show photo response in UV illumination and only in forward bias under visible illumination. The photocurrent of the device remains high even under bending strain.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
M. S. Sikandar Bathusha, Israr Ud Din, Rehan Umer, Kamran A. Khan
Summary: Graphene-based nanomaterials are used as embedded sensors to monitor fracture behavior in composite structures. This study investigates the in-situ crack propagation and fracture behavior in a glass fiber reinforced polymer composite using embedded reduced graphene oxide coated fabrics and highly conductive graphene nanoplatelet paper.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
