Results 21 to 30 of about 213 (95)

Organic electrochemical transistor arrays for real-time mapping of evoked neurotransmitter release in vivo

eLife, 2020
Though neurotransmitters are essential elements in neuronal signal transduction, techniques for in vivo analysis are still limited. Here, we describe an organic electrochemical transistor array (OECT-array) technique for monitoring catecholamine ...
Kai Xie, Naixiang Wang, Xudong Lin, Zixun Wang, Xi Zhao, Peilin Fang, Haibing Yue, Junhwi Kim, Jing Luo, Shaoyang Cui, Feng Yan, Peng Shi   +11 more
doaj   +1 more source

Ultrathin, Soft, Bioresorbable Organic Electrochemical Transistors for Transient Spatiotemporal Mapping of Brain Activity

Advanced Science, 2023
A critical challenge lies in the development of the next‐generation neural interface, in mechanically tissue‐compatible fashion, that offer accurate, transient recording electrophysiological (EP) information and autonomous degradation after stable ...
Mengge Wu, Kuanming Yao, Ningge Huang, Hu Li, Jingkun Zhou, Rui Shi, Jiyu Li, Xingcan Huang, Jian Li, Huiling Jia, Zhan Gao, Tsz Hung Wong, Dengfeng Li, Sihui Hou, Yiming Liu, Shiming Zhang, Enming Song, Junsheng Yu, Xinge Yu   +18 more
doaj   +1 more source

Application of organic electrochemical transistors based on mixed ionic electrolytes in neural synaptic simulation

Gongneng cailiao yu qijian xuebao
This study develops hybrid ionic electrolytes by blending EMIM-TFSI, EMIM-BF4, and EMIM-PF6 with a polymer electrolyte (poly(DADMATFSI), PIL) to enhance the performance of organic electrochemical transistors (OECTs) for neuromorphic computing.
Haorong QI, Bei ZHANG
doaj   +1 more source

Towards In Vivo Monitoring of Ions Accumulation in Trees: Response of an in Planta Organic Electrochemical Transistor Based Sensor to Water Flux Density, Light and Vapor Pressure Deficit Variation

Applied Sciences, 2021
Research on organic electrochemical transistor (OECT) based sensors to monitor in vivo plant traits such as xylem sap concentration is attracting attention for their potential application in precision agriculture.
Davide Amato, Giuseppe Montanaro, Filippo Vurro, Nicola Coppedé, Nunzio Briglia, Angelo Petrozza, Michela Janni, Andrea Zappettini, Francesco Cellini, Vitale Nuzzo   +9 more
doaj   +1 more source

Active Operation State Optimization of OECTs by Extremum Seeking Method Based on Amplitude Feedback

IEEE Journal of the Electron Devices Society
Organic electrochemical transistor (OECT) based biosensors have gained extensive research interest due to their high transconductance, low driving voltage, and biocompatibility.
Han Zhang, Fei Wu, Guohong Hu, Miao Xie, Wei Huang   +4 more
doaj   +1 more source

Transient Charging of Mixed Ionic‐Electronic Conductors by Anomalous Diffusion

Advanced Materials, EarlyView.
This article explores charge transport in mixed ionic‐electronic conductors (MIECs) through electrochemical impedance spectroscopy and transient current analysis. Focusing on PEDOT:PSS, WO3, and n‐doped PBDF, it uncovers the impact of anomalous diffusion via fractional modeling. The study reveals key correlations that deepen understanding and guide the
Heyi Zhang, Gonzalo Rivera‐Sierra, Shirin Siahjani‐Gultekin, Jenifer Rubio‐Magnieto, Anis Allagui, Ignacio Sanjuán, David Franco, Antonio Guerrero, Enrique H. Balaguera, Juan Bisquert   +9 more
wiley   +1 more source

A Performance Comparison Between Organic Electrochemical Transistor and Electrode Configurations for Enzymatic Sensing

Advanced Sensor Research
Organic electrochemical transistors (OECTs) excel at biosensing due to their high amplification factor, which allows for detecting low analyte concentrations and picking up weak physiological signals.
Abdulelah Saleh, Shofarul Wustoni, Luca Salvigni, Anil Koklu, Victor Druet, Jokubas Surgailis, Prem D. Nayak, Sahika Inal   +7 more
doaj   +1 more source

Ion‐Reconfigurable “N”‐Shaped Antiambipolar Behavior in Organic Electrochemical Transistors

Advanced Materials, EarlyView.
A unique N‐shaped negative differential transconductance (NDT) characteristics is demonstrated in single‐polymer organic electrochemical transistors through a sequential doping–redox–doping process driven by iodide ions. This redox‐driven mechanism enables low‐voltage, ion‐controlled reconfigurability and tunable current modulation, allowing seamless ...
Debdatta Panigrahi, Daniele Zucchelli, Zeinab Hamid, Christina Kousseff, Arup Sarkar, Aristea Pavlou, Zhitian Ling, Somayeh Kashani, Iain McCulloch, Paul W. M. Blom, Fabrizio Torricelli, Paschalis Gkoupidenis   +11 more
wiley   +1 more source

Ultrafast Vertical Organic Electrochemical Transistors With Ion‐Permeable Conductive Polymer Top Electrodes

Advanced Materials, EarlyView.
Vertical organic electrochemical transistors (vOECTs) are limited in speed by ion‐impermeable metal electrodes that slow ion injection. Using ion‐permeable PBFDO top electrodes allows direct vertical ion injection into BBL channels, achieving high current densities (>400 A cm−2), large on/off ratios (>106), and ultrafast switching in 28 µs. This sets a
Han‐Yan Wu, Yingxue An, Luigi Fabiano, Qifan Li, Qingqing Wang, Feng Zhang, Wenlong Jin, Miao Xiong, Junpeng Ji, Ugo Bruno, Grzegorz Greczynski, Grazia Maria Lucia Messina, Xianjie Liu, Chi‐Yuan Yang, Simone Fabiano   +14 more
wiley   +1 more source

All-Plastic Electrochemical Transistor for Glucose Sensing Using a Ferrocene Mediator

Sensors, 2009
We demonstrate a glucose sensor based on an organic electrochemical transistor (OECT) in which the channel, source, drain, and gate electrodes are made from the conducting polymer poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT:
George G. Malliaras, Maria Nikolou, Róisín M. Owens, John A. DeFranco, Na Young Shim, Daniel A. Bernards, Daniel J. Macaya   +6 more
doaj   +1 more source