Ultrasensitive artificial synapse based on conjugated polyelectrolyte
- Authors
- Xu, Wentao; Thanh Luan Nguyen; Kim, Young-Tae; Wolf, Christoph; Pfattner, Raphael; Lopez, Jeffrey; Chae, Byeong-Gyu; Kim, Sung-Il; Lee, Moo Yeol; Shin, Eul-Yong; Noh, Yong-Young; Oh, Joon Hak; Hwang, Hyunsang; Park, Chan-Gyung; Woo, Han Young; Lee, Tae-Woo
- Issue Date
- 6월-2018
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Neuromorphic devices; Memory; Dipole reorientation; Ion migration; Sensitivity
- Citation
- NANO ENERGY, v.48, pp.575 - 581
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANO ENERGY
- Volume
- 48
- Start Page
- 575
- End Page
- 581
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/75060
- DOI
- 10.1016/j.nanoen.2018.02.058
- ISSN
- 2211-2855
- Abstract
- 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 electronicbiological 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.
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Collections - College of Science > Department of Chemistry > 1. Journal Articles
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