Two-dimensional molybdenum disulfide artificial synapse with high sensitivity

2021 ◽  
Author(s):  
Hao Huang ◽  
Lu Liu ◽  
chengpeng jiang ◽  
Jiangdong Gong ◽  
Yao Ni ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
High Sensitivity ◽  
Two Dimensional ◽  
Ion Migration ◽  
Dependent Plasticity ◽  
Rate Dependent ◽  
Synaptic Functions ◽  
Artificial Synapse ◽  
Spike Number ◽  
External Stimuli

Abstract This paper reports the fabrication of an artificial synapse (AS) based on two-dimensional molybdenum disulfide (MoS2) film. The AS emulates important synaptic functions such as paired-pulse facilitation, spike-rate dependent plasticity, spike-duration dependent plasticity and spike-number dependent plasticity. The spike voltage can mediate ion migration in the ion gel to regulate the MoS2 conductive channel, thereby realizing the emulation of synaptic plasticity. More importantly, benefiting from the atomically-flat surface of MoS2 film, the device has a high sensitivity to external stimuli. It can effectively respond to presynaptic spikes that have an amplitude of 100 mV. The development of this device provides a new idea for constructing a highly-sensitive and multifunctional neuromorphic system.

scholarly journals Polarization-sensitive photodetectors based on three-dimensional molybdenum disulfide (MoS2) field-effect transistors

Nanophotonics ◽  
2020 ◽  
Vol 9 (16) ◽  
pp. 4719-4728
Author(s):  
Tao Deng ◽  
Shasha Li ◽  
Yuning Li ◽  
Yang Zhang ◽  
Jingye Sun ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Three Dimensional ◽  
Polarized Light ◽  
Optical Field ◽  
Two Dimensional ◽  
Polarization Ratio ◽  
Two Dimensional Materials

AbstractThe molybdenum disulfide (MoS2)-based photodetectors are facing two challenges: the insensitivity to polarized light and the low photoresponsivity. Herein, three-dimensional (3D) field-effect transistors (FETs) based on monolayer MoS2 were fabricated by applying a self–rolled-up technique. The unique microtubular structure makes 3D MoS2 FETs become polarization sensitive. Moreover, the microtubular structure not only offers a natural resonant microcavity to enhance the optical field inside but also increases the light-MoS2 interaction area, resulting in a higher photoresponsivity. Photoresponsivities as high as 23.8 and 2.9 A/W at 395 and 660 nm, respectively, and a comparable polarization ratio of 1.64 were obtained. The fabrication technique of the 3D MoS2 FET could be transferred to other two-dimensional materials, which is very promising for high-performance polarization-sensitive optical and optoelectronic applications.

scholarly journals Long- and Short-Term Conductance Control of Artificial Polymer Wire Synapses

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 312
Author(s):  
Naruki Hagiwara ◽  
Shoma Sekizaki ◽  
Yuji Kuwahara ◽  
Tetsuya Asai ◽  
Megumi Akai-Kasaya
Keyword(s):  
Artificial Intelligence ◽  
Human Brain ◽  
High Speed ◽  
Conductive Polymer ◽  
Long Term Potentiation ◽  
Short Term ◽  
Synaptic Functions ◽  
Term Potentiation ◽  
Artificial Brain ◽  
External Stimuli

Networks in the human brain are extremely complex and sophisticated. The abstract model of the human brain has been used in software development, specifically in artificial intelligence. Despite the remarkable outcomes achieved using artificial intelligence, the approach consumes a huge amount of computational resources. A possible solution to this issue is the development of processing circuits that physically resemble an artificial brain, which can offer low-energy loss and high-speed processing. This study demonstrated the synaptic functions of conductive polymer wires linking arbitrary electrodes in solution. By controlling the conductance of the wires, synaptic functions such as long-term potentiation and short-term plasticity were achieved, which are similar to the manner in which a synapse changes the strength of its connections. This novel organic artificial synapse can be used to construct information-processing circuits by wiring from scratch and learning efficiently in response to external stimuli.

Compressible and Flexible PPy@MoS2/C Microwave Absorption Foam with Strong Dielectric Polarization from 2D Semiconductor Intermediated Sandwich Structure

Nanoscale ◽  
2021 ◽  
Author(s):  
Ziqi Yang ◽  
Huiqiao Guo ◽  
Wenbin You ◽  
Zhengchen Wu ◽  
Liting Yang ◽  
...  
Keyword(s):  
Dielectric Property ◽  
Molybdenum Disulfide ◽  
Microwave Absorption ◽  
Sandwich Structure ◽  
Structural Engineering ◽  
Two Dimensional ◽  
Dielectric Polarization ◽  
2D Material ◽  
Major Trend

Structural engineering represents a major trend in two-dimensional (2D) material fields on microscopic interfacial electric/dielectric property and macroscopic device strategy. 2D Molybdenum disulfide (MoS2) with semiconductive feature and lamellar architecture...

Flexo-photoelectronic effect in n-type/p-type two-dimensional semiconductors and a deriving light-stimulated artificial synapse

2021 ◽  
Author(s):  
Xiang Wang ◽  
Xin Zhou ◽  
Anyang Cui ◽  
Menghan Deng ◽  
Xionghu Xu ◽  
...  
Keyword(s):  
Two Dimensional ◽  
2D Semiconductors ◽  
Artificial Synapse ◽  
P Type

We demonstrate flexo-photoelectronic effects of both n-type and p-type 2D semiconductors.

A model for rate-dependent plasticity

1995 ◽  
Vol 43 (9) ◽  
pp. 1497-1503 ◽  
Author(s):  
Feng Wang ◽  
James Glimm ◽  
Bradley J. Plohr
Keyword(s):  
Dependent Plasticity ◽  
Rate Dependent

Rate-dependent plasticity models derived from potential functions

2002 ◽  
Vol 46 (1) ◽  
pp. 113-126 ◽  
Author(s):  
G. T. Houlsby ◽  
A. M. Puzrin
Keyword(s):  
Potential Functions ◽  
Dependent Plasticity ◽  
Rate Dependent

Nanopillar modified high-sensitivity asymmetric Graphene-GaN photodetector

Nanoscale ◽  
2021 ◽  
Author(s):  
Chang Liu ◽  
Xiaodong Li ◽  
Tiangui Hu ◽  
Wenkai Zhu ◽  
Faguang Yan ◽  
...  
Keyword(s):  
Electrical Properties ◽  
High Performance ◽  
2D Materials ◽  
Three Dimensional ◽  
High Sensitivity ◽  
Optical And Electrical Properties ◽  
Two Dimensional

Integration of two dimensional (2D) materials with three dimensional (3D) semiconductors reveals intriguing optical and electrical properties that surpass those of the original materials. Here we report the high performance...

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