Article
Chemistry, Multidisciplinary
Depeng Wang, Shufang Zhao, Linlin Li, Lili Wang, Shaowei Cui, Shuo Wang, Zheng Lou, Guozhen Shen
Summary: The simulation of human feelings, perceptions, and actions is an important application in medical treatment, human-computer interfaces, and intelligent robots. This article presents the use of a threshold-switching memristor to simulate an unconditioned reflex, achieving high current nonlinearity and flexibility. By integrating a flexible sensor and a flexible artificial muscle, an all-flexible complete reflex arc of an unconditioned reflex is formed. The threshold-switching memristor shows great potential for primary neuromorphological control and flexible intelligent medical treatment.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yaxiong Cao, Saisai Wang, Rui Wang, Yuhan Xin, Yaqian Peng, Jing Sun, Mei Yang, Xiaohua Ma, Ling Lv, Hong Wang, Yue Hao
Summary: In this study, a fully biocompatible and biodegradable threshold switching (TS) memristor was proposed as an artificial nociceptor. The device exhibited stable electrical performance even under bending conditions. Important nociceptor behaviors were successfully demonstrated, and an optoelectronic nociceptor system was built. The devices, made on a biodegradable substrate, could completely dissolve in deionized water, mimicking the decomposition of necrotic tissue. This research provides a novel approach for developing fully biocompatible and biodegradable artificial nociceptors for applications in implantable and wearable electronics and bio-integrated systems.
SCIENCE CHINA-MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Zechen Zhang, Sen Gao, Zhiyuan Li, Yichun Xu, Rui Yang, Xiangshui Miao
Summary: Bio-inspired computing architecture based on artificial neurons and synapses is gaining attention for power-efficient artificial intelligence. A compact LIF neuron circuit based on an Ag/Ti/HfSe2-xOy/Pt TS device is designed to achieve bio-inspired burst firing. By adjusting oxidation conditions and embedding a thin Ti layer, device performance is significantly improved, enabling the realization of bionic bursting functions in the LIF neuron.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Chemistry, Physical
Yanmei Sun, Dianzhong Wen, Fengyun Sun
Summary: This study fabricated 2D composite nanomaterials with excellent threshold switching characteristics and crosstalk suppression effects, showing great potential for further development.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Hojeong Ryu, Sungjun Kim
Summary: This study investigates the threshold switching and short-term memory plasticity of a Pt/HfO2/TaOx/TiN resistive memory device for a neuromorphic system. The experimental results show that controlling the interval time of pulses can initiate the accumulation of conductance and a natural decrease in current, and a neuromorphic simulation was conducted to calculate pattern recognition accuracy, demonstrating the applicability of these mechanisms to temporal learning in a neuromorphic system.
Review
Chemistry, Multidisciplinary
Hongyu Bian, Yi Yiing Goh, Yuxia Liu, Haifeng Ling, Linghai Xie, Xiaogang Liu
Summary: The performance of neural synapse networks depends on the characteristics of synaptic learning, requiring the design of reliable multi-functional neural synaptic devices to achieve intelligent functions.
ADVANCED MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Young Ran Park, Haein Cho, Gunuk Wang
Summary: In this study, a solution-processable two-terminal Ag (or Al)/NiOx/ITO memristor was demonstrated to exhibit triple-switching characteristics depending on the different voltage regimes. The three switching characteristics are related to the transition of dominant switching mechanisms depending on the operating scheme, which is investigated using various material and chemical characterization techniques.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Satish Bonam, K. Aditya Bhagavathi, Jose Joseph, Shiv Govind Singh, Siva Rama Krishna Vanjari
Summary: Tactile sensors are pressure/strain sensors that measure mechanical stimuli from living and nonliving objects to gather information about their physical state. A silk-based ultra-flexible tactile sensor was developed in this study, utilizing the piezoelectric property of silk thin film. The sensor's performance was analyzed in relation to different conditions of silk thin film fabrication. The potential utility of the silk-based tactile sensor in practical applications was assessed, demonstrating its ability to detect and distinguish various body movements accurately and stably.
IEEE SENSORS JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Zhijun Chen, Yutao Cui, Lirong Liang, Hanfu Wang, Wei Xu, Qichun Zhang, Guangming Chen
Summary: This study prepares a flexible composite film by covalently bonding single-walled carbon nanotubes (SWCNTs) with porous metal-organic frameworks (MOFs), demonstrating good flexibility and p-type thermoelectric characteristics. Furthermore, a flexible thermoelectric device connected by multiple films in series generates high open-circuit voltage and maximum power.
MATERIALS TODAY NANO
(2022)
Article
Computer Science, Information Systems
Sojin Jeong, Sangwoo Han, Ho-Jun Lee, Deokjoon Eom, Gisu Youm, Yejoo Choi, Seungjun Moon, Kyungjin Ahn, Jinju Oh, Changhwan Shin
Summary: By optimizing the Ag/HfO2-based TS device and inserting a Ti injection barrier layer, a stable and optimized performance for the 2D atomic-threshold-switching field-effect transistor (ATS-FET) was achieved.
Article
Nanoscience & Nanotechnology
Dani S. Assi, Muhammed P. U. Haris, Vaithinathan Karthikeyan, Samrana Kazim, Shahzada Ahmad, Vellaisamy A. L. Roy
Summary: In the pursuit of reducing energy consumption, there is a growing demand for electronic materials beyond silicon for neuromorphic AI devices. Organohalide perovskites, with their energy efficiency and adaptability, can simulate synaptic functions in the human brain. This study designs and develops CsFAPbI(3)-based memristive neuromorphic devices that can switch at low power and exhibit larger endurance. The results provide a pathway to achieving low-power neuromorphic devices that mimic the performance of the human brain.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Jingyao Bian, Ye Tao, Zhongqiang Wang, Xiaohan Zhang, Xiaoning Zhao, Ya Lin, Haiyang Xu, Yichun Liu
Summary: This paper introduces a stacked memristor-based LIF neuron that can accomplish integration and firing functions and successfully mimics key functions of biological neurons. The fabricated neurons have great potential for constructing high-density spiking neural networks for neuromorphic computing.
IEEE ELECTRON DEVICE LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Fengchang Huang, Shuaipeng Ge, Ruilai Wei, Jiaqi He, Xiaole Ma, Juan Tao, Qiuchun Lu, Xiaoming Mo, Chunfeng Wang, Caofeng Pan
Summary: This study demonstrated a unipolar TSD based on all-inorganic CsCu2I3 halide perovskite with features of low threshold voltage, high ON/OFF ratio, long-term stability, steep switching slope, and lead-free composition, while the threshold voltage can be further reduced through UV illumination.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Fengchang Huang, Shuaipeng Ge, Ruilai Wei, Jiaqi He, Xiaole Ma, Juan Tao, Qiuchun Lu, Xiaoming Mo, Chunfeng Wang, Caofeng Pan
Summary: Halide perovskites are promising materials for next-generation memristors and neuromorphic computers. In this study, a unipolar threshold switching device (TSD) based on all-inorganic CsCu2I3 perovskite is demonstrated, exhibiting low threshold voltage, high ON/OFF ratio, robust stability, and lead-free composition. The performance can be further improved through UV illumination.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Ruqian Sun, Jiaqing Xie, Xiaoyu Meng, Haoran Pang, Chuchu Gong, Fuyang Zhou
Summary: This research proposed a flexible piezoresistive tactile sensor with imprinted microsphere array, which can accurately and stably acquire human motion data. Experimental results showed that the sensitivity of the sensor can be improved by reducing the chord height, and the composite structure with PDMS/carboxylated MWCNT/PI membrane can enhance the sensitivity and reduce the detection limit. Multipoint imprinting technology is an efficient processing method to obtain a high consistency microsphere array.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Physical
Yongxu Yan, Wenhao Ran, Zhexin Li, Linlin Li, Zheng Lou, Guozhen Shen
Summary: By surface modification of Cd3As2 NWs with sulfur, the oxidation of surface was prevented and bandgap structure was optimized to enhance the photoresponse performance. The S-modified Cd3As2 samples as core/shell Cd3As2/CdS NWs showed significantly improved responsivity in the NIR band.
Review
Materials Science, Multidisciplinary
Zhihui Ren, Juehan Yang, Dongchen Qi, Prashant Sonar, Liyuan Liu, Zheng Lou, Guozhen Shen, Zhongming Wei
Summary: Flexible electronic devices, particularly flexible sensors, have been widely researched for their potential applications, utilizing organic and inorganic hybrid materials to ensure high frequency and high-speed conductive properties. This review discusses the performance requirements of sensor materials and summarizes the performance of hybrid materials in sensors based on sensor type. Challenges and future directions for development in flexible sensors using promising materials are also presented.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Chemistry, Multidisciplinary
Zhiduo Liu, Gang Wang, Chen Ye, Hongyan Sun, Weihua Pei, Chunrong Wei, Wen Dai, Zhiqiang Dou, Qingyu Sun, Cheng-Te Lin, Yijun Wang, Hongda Chen, Guozhen Shen
Summary: The study developed a contact lens sensor for continuous IOP monitoring using self-assembly graphene, which has high sensitivity and stability, suitable for continuous wireless monitoring of IOP.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yupu Zhang, Lili Wang, Lianjia Zhao, Kang Wang, Yiqiang Zheng, Zeyu Yuan, Dongyi Wang, Xiyao Fu, Guozhen Shen, Wei Han
Summary: The study presented a self-powered smart sensor system based on MXene/black phosphorus, which integrates various technologies to achieve accurate and continuous detection of physiological signals, paving the way for the development of wearable electronics.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Chuqiao Hu, La Li, Guozhen Shen
Summary: Ti3C2 MXene serves as superior electrical conductors and shows great potential in transparent near-infrared photodetectors, with high on-off ratio, flexibility, high transmittance, and applicability in wearable optoelectronic devices.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Zhihui Ren, Pan Wang, Kai Zhang, Wenhao Ran, Juehan Yang, Yue-Yang Liu, Zheng Lou, Guozhen Shen, Zhongming Wei
Summary: GaSb nanowire-based photodetectors exhibit high polarization sensitivity in short-wave near-infrared photoelectric detection and demonstrate good optical detection ability at 1550 nm, showing great potential for applications.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Chemistry, Physical
Qiufan Wang, Jiaheng Liu, Xuan Ran, Daohong Zhang, Guozhen Shen, Menghe Miao
Summary: In this study, a lightweight and flexible self-powered sensing system was developed by integrating a highly stretchable strain sensor with a high-performance asymmetric supercapacitor. The system utilizes ZnSe/CoSe2 nanosheets and ECNT to provide efficient transmission and short paths for electron/ion diffusion, achieving accurate measurement of strain and pressure changes.
Review
Chemistry, Multidisciplinary
Ludong Li, Shuai Ye, Junle Qu, Feifan Zhou, Jun Song, Guozhen Shen
Summary: This review provides a comprehensive overview of recent advances in metal halide perovskites for image sensing applications, including performance parameters, device types, applications of different dimensional materials, preparation methods, single-pixel imaging, and strategies for color discrimination.
Article
Physics, Applied
Xiyao Fu, Depeng Wang, Lili Wang, Hao Xu, Valerii Shulga, Guozhen Shen, Wei Han
Summary: The article introduces a novel flexible pressure sensor utilizing oxidized Ti3C2T (x) film, which demonstrates low detection limits, fast response and recovery time, and excellent cycling stability for personalized monitoring of human physiological activities. This good sensing characteristic highlights the broad prospects of oxidized MXene-based pressure sensors for higher integration of flexible electronic devices.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Review
Chemistry, Multidisciplinary
Hongsen Niu, Huiyun Zhang, Wenjing Yue, Song Gao, Hao Kan, Chunwei Zhang, Congcong Zhang, Jinbo Pang, Zheng Lou, Lili Wang, Yang Li, Hong Liu, Guozhen Shen
Summary: Template methods are considered crucial for micro-nano processing in the active layer of flexible tactile sensors, enhancing properties like sensitivity and response time. However, the lack of a perfect system for processing and applicable conditions has slowed down the development and commercialization of these sensors. Despite the obstacles, advancements in various disciplines have laid the groundwork for template methods, fueling continuous progress in flexible tactile sensors.
Article
Chemistry, Physical
Zhiyi Gao, Shuai Chen, Rui Li, Zheng Lou, Wei Han, Kai Jiang, Fengyu Qu, Guozhen Shen
Summary: The artificial olfactory system developed in this study integrates SrZnO-based gas sensors, HfOx-based memristors and electrochemical actuators to recognize, memorize and self-protect against NH3. The system mimics the functions of the human olfactory system, showing promising potential for bioinspired electronics research.
Article
Chemistry, Physical
Lianjia Zhao, Lili Wang, Yiqiang Zheng, Shufang Zhao, Wei Wei, Dawei Zhang, Xiyao Fu, Kai Jiang, Guozhen Shen, Wei Han
Summary: This study successfully designed a highly-stable electronic skin by incorporating PVA to improve the stability of MXene in harsh environments, demonstrating excellent biocompatibility and functionality.
Review
Chemistry, Multidisciplinary
Bowen Zhong, Kai Jiang, Lili Wang, Guozhen Shen
Summary: Wearable sweat sensors have attracted significant research interest for monitoring physiological and psychological states. Wearable sweat loss measuring devices (SLMDs) have been proposed to overcome the challenges of biomarker tracking and offer potential for monitoring human body homeostasis.
Review
Engineering, Electrical & Electronic
Depeng Wang, Shufang Zhao, Ruiyang Yin, Linlin Li, Zheng Lou, Guozhen Shen
Summary: Ionic-gated transistors (IGTs) have shown great potential in various applications, with excellent stability and reliability. In the future, IGTs are expected to be widely used in sensors, neuromorphic transistors, and health detection.
NPJ FLEXIBLE ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Xiaoting Wang, Fang Zhong, Jun Kang, Can Liu, Ming Lei, Longfei Pan, Hailu Wang, Fang Wang, Ziqi Zhou, Yu Cui, Kaihui Liu, Jianlu Wang, Guozhen Shen, Chongxin Shan, Jingbo Li, Weida Hu, Zhongming Wei
Summary: The study demonstrates the utilization of a two-dimensional alpha-GeSe semiconductor to realize a polarizer-free polarization-sensitive visible/near-infrared photodetector/imager. The device exhibits impressive performances and unique polarization sensitivity. The proposed imager has the ability to sense dual-band polarization signals in the scene without polarizers, paving the way for advanced applications.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Physical
Sirinya Ukasi, Paritta Jutapukti, Chiranicha Ninthub, Nattapong Pinpru, Phakkhananan Pakawanit, Wanwilai Vittayakorn, Satana Pongampai, Naratip Vittayakorn, Thitirat Charoonsuk
Summary: This study explores the enhancement of electrical output of flexible hybrid piezoelectric-triboelectric nanogenerators by incorporating gamma-glycine into fully organic composites. The research demonstrates the importance of optimized concentrations of gamma-glycine and chitosan in achieving superior performance. The study identifies the critical content of gamma-glycine that leads to the highest output signal, and provides theoretical explanations for this observation.
Article
Chemistry, Physical
Yoonsang Ra, Yu-seop Kim, Seonmo Yang, Namgyu Kang, Gyuwon Oh, Chungyeon Cho, Sangmin Lee, Dongwhi Choi
Summary: In this study, a portable energy harvester (STEP) was proposed to drive various functional LEDs using biomechanical energy. The roles and functionalities of a triboelectric nanogenerator (TENG) and electromagnetic generator (EMG) in the hybrid energy harvester were experimentally demonstrated, and the necessity of hybridization for LED-involved devices was described. The STEP showed promising potential as an effective energy supply strategy for various functional LEDs in related industries.
Article
Chemistry, Physical
Dae Sol Kong, Kyung Hoon Kim, Ying Chieh Hu, Jong Hun Kim, Inseo Kim, Jeongwan Lee, Joonhyuk Lee, Won Hyuk Shon, Hanjin Yoo, Chul-Un Ro, Seungsu Lee, Hyoungjeen Jeen, Minbaek Lee, Minseok Choi, Jong Hoon Jung
Summary: With the rapid development of the Internet of Things and artificial intelligence, smart home has emerged to fulfill the security, convenience, and energy-saving issues of modern life. A flexoelectric mica crystal is used to augment the finger touch-driven triboelectric output for operating a wireless and multichannel smart home controller. This work provides important ingredients for enhancing triboelectric output and realizing a convenient, multifunctional, cost-effective, and adaptable smart home control system without batteries.
Article
Chemistry, Physical
Yi Han, Fang Wu, Xiaozhen Du, Zihao Li, Haixiang Chen, Dongxing Guo, Junlei Wang, Hong Yu
Summary: This paper presents a novel type of triboelectric nanogenerator that utilizes wind energy, with a Y-type bluff body to enhance vibration and output power. The application of this generator successfully provides power for a wireless temperature and humidity sensor.
Article
Chemistry, Physical
Wen Zhang, Fangyuan Cheng, Miao Chang, Yue Xu, Yuyu Li, Shixiong Sun, Liang Wang, Leimin Xu, Qing Li, Chun Fang, Meng Wang, Yuhao Lu, Jiantao Han, Yunhui Huang
Summary: This study successfully induced the formation of a uniform and robust CEI by constructing ZrO2 nano-rivets on the surface of LCO, stabilizing the surface of high-voltage LCO and facilitating lithium-ion diffusion.
Article
Chemistry, Physical
Karl P. Olson, Laurence D. Marks
Summary: This paper investigates the role of contacting shapes in triboelectricity and provides scaling rules for designing energy harvesting devices.
Article
Chemistry, Physical
Jong-An Choi, Jingu Jeong, Mingyu Kang, Hee-Jin Ko, Taehoon Kim, Keun Park, Jongbaeg Kim, Soonjae Pyo
Summary: Wind-driven triboelectric nanogenerators (WTENGs) are a promising emerging technology for sustainable wind energy harvesting, offering high output performance, lightweight design, and compact dimensions. This study introduces an innovative WTENG design that leverages a rolling-based mechanism to achieve efficient omnidirectional wind energy harvesting.
Article
Chemistry, Physical
Liwei Dong, Qian Tang, Chaoyang Zhao, Guobiao Hu, Shuai Qu, Zicheng Liu, Yaowen Yang
Summary: This paper proposes a novel hybrid scheme for flag-type nanogenerators (FNGs) that enhances their performance and broadens their operational wind speed ranges by harnessing the synergistic potential of two aerodynamic behaviors. The proposed flag-type triboelectric-piezoelectric hybrid nanogenerator (FTPNG) integrates flapping piezoelectric flags (PEFs) and a fluttering triboelectric flag (TEF). The FTPNG achieves significant power generation and a broad wind speed range, surpassing other FNGs, making it suitable for various self-powered systems and Internet of Things applications.
Review
Chemistry, Physical
Yunmeng Li, Xin Liu, Zewei Ren, Jianjun Luo, Chi Zhang, Changyong (Chase) Cao, Hua Yuan, Yaokun Pang
Summary: The demand for green and eco-friendly materials is growing due to increasing environmental concerns related to traditional petroleum-based products. Marine biomaterials have emerged as a promising alternative, thanks to their abundant availability, biocompatibility, biodegradability, and low toxicity. In this review, we discuss the development and applications of triboelectric nanogenerators (TENGs) based on marine biomaterials. The operational modes, foundational principles, intrinsic qualities, and advantages of marine biomaterials commonly used in TENG designs are highlighted. Approaches to enhance the efficacy of TENGs derived from marine biomaterials are also discussed, along with documented applications from existing literature. Furthermore, the existing challenges and future directions in marine biomaterial-inspired TENGs are explored.
Article
Chemistry, Physical
Matthew P. Wells, Adam J. Lovett, Yizhi Zhang, Zhongxia Shang, Kosova Kreka, Babak Bakhit, Haiyan Wang, Albert Tarancon, Judith L. MacManus-Driscoll
Summary: Reversible solid oxide cells (rSOCs) offer a promising solution to efficient energy conversion, but have been limited in portable power and electrolysis applications due to excessive polarisation resistance of the oxygen electrode at low temperatures. This study demonstrates the growth of symmetric and complete rSOC structures with reduced polarisation resistance by tuning oxygen vacancy through annealing, providing a promising route towards high-performance rSOC devices for portable power applications.
Article
Chemistry, Physical
Kangkang Bao, Minghui Wang, Yue Zheng, Panpan Wang, Liwen Yang, Yang Jin, Hui Wu, Bin Sun
Summary: This study utilizes ethanol as an electrolyte additive to modulate the migration of zinc ions and the surface structure of zinc anodes, resulting in improved capacity retention and cycle life of zinc-based aqueous batteries.
Article
Chemistry, Physical
Haichao Yang, Wensi Cai, Ming Wang, Saif M. H. Qaid, Zhiyuan Xu, Huaxin Wang
Summary: The introduction of sodium alginate (SA) into perovskite solar cells improves the carrier dynamics, stability, and performance by inhibiting nonradiative recombination and retarded charge dynamics.
Article
Chemistry, Physical
Cuirong Zhang, Mingyuan Wei, Zihan Chen, Wansheng Lin, Shifan Yu, Yijing Xu, Chao Wei, Jinwei Zhang, Ziquan Guo, Yuanjin Zheng, Qingliang Liao, Xinqin Liao, Zhong Chen
Summary: Artificial Intelligence of Things (AIoT) aims to establish smart and informative interactions between humans and devices. However, common pixelated sensing arrays in AIoT applications present problems such as hard and brittle devices, complex structures, and low precision. This article introduces an innovative solution called the all-in-one intelligent semitransparent interactive nerve patch (AISI nerve patch), which integrates sensing, recognition, and transmission functionalities into a thin and flexible patch. The AISI nerve patch is semitransparent, allowing for accurate identification without affecting aesthetics, and it can be attached to any curved surface for intelligent and interactive applications. With rapid response time and high precision recognition, it enables the integration of artificial intelligence and achieves high recognition accuracy for further development of AIoT.
Article
Chemistry, Physical
Youcun Bai, Heng Zhang, Huijun Song, Chong Zhu, Lijin Yan, Qin Hu, Chang Ming Li
Summary: A novel stainless-steel supported lattice-mismatched V-S-Se layered compound with high selenium vacancy was synthesized by adjusting the molar ratio of sulfur to selenium. The introduction of selenium vacancies created additional redox peaks of sulfur, providing more mass transport channels and active sites for zinc ions. The specific capacity and cycle stability of the electrode were significantly improved, demonstrating great potential for practical applications and providing insights into the effects of defects on battery performance.
Article
Chemistry, Physical
Yao Xiao, Puxian Xiong, Yakun Le, Zhenjie Lun, Kang Chen, Zhiduo Wang, Peishan Shao, Zhicong Chen, Dongdan Chen, Zhongmin Yang
Summary: This study successfully synthesized a material with multi-stimulus-responsive luminescence and confirmed the internal relationship between luminescence and defects by regulating the distribution and depth of defects. The dynamic process of multi-stimulus-responsive luminescence was validated by experimental and calculation results.
