Ultrasensitive artificial synapse based on conjugated polyelectrolyte
| Autor: | Yong-Young Noh, Jeffrey Lopez, Sung Il Kim, Tae-Woo Lee, Christoph Wolf, Moo Yeol Lee, Byeong Gyu Chae, Chan Gyung Park, Hyunsang Hwang, Raphael Pfattner, Eul-Yong Shin, Thanh Luan Nguyen, Joon Hak Oh, Young Tae Kim, Wentao Xu, Han Young Woo |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Synaptic cleft Renewable Energy Sustainability and the Environment Rate dependent Nanotechnology 02 engineering and technology Energy consumption 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Conjugated polyelectrolyte Synapse Important research Neuromorphic engineering General Materials Science Sensitivity (control systems) Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Nano Energy. 48:575-581 |
| ISSN: | 2211-2855 |
| Popis: | Emulating essential synaptic working principles using a single electronic device has been an important research field in recent years. However, achieving sensitivity and energy consumption comparable to biological synapses in these electronic devices is still a difficult challenge. Here, we report the fabrication of conjugated polyelectrolyte (CPE)-based artificial synapse, which emulates important synaptic functions such as paired-pulse facilitation (PPF), spike-timing dependent plasticity (STDP) and spiking rate dependent plasticity (SRDP). The device exhibits superior sensitivity to external stimuli andlow-energy consumption. Ultrahigh sensitivity and low-energy consumption are key requirements for building up brain-inspired artificial systems and efficient electronic-biological interface. The excellent synaptic performance originated from (i) a hybrid working mechanism that ensured the realization of both short-term and long-term plasticity in the same device, and (ii) the mobile-ion rich CPE thin film that mediate migration of abundant ions analogous to a synaptic cleft. Development of this type of artificial synapse is both scientifically and technologically important for construction of ultrasensitive highly-energy efficient and soft neuromorphic electronics. |
| Databáze: | OpenAIRE |
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