Research ArticleNANOTECHNOLOGY

Organic core-sheath nanowire artificial synapses with femtojoule energy consumption

Science Advances  17 Jun 2016:
Vol. 2, no. 6, e1501326
DOI: 10.1126/sciadv.1501326

You are currently viewing the abstract.

View Full Text

Abstract

Emulation of biological synapses is an important step toward construction of large-scale brain-inspired electronics. Despite remarkable progress in emulating synaptic functions, current synaptic devices still consume energy that is orders of magnitude greater than do biological synapses (~10 fJ per synaptic event). Reduction of energy consumption of artificial synapses remains a difficult challenge. We report organic nanowire (ONW) synaptic transistors (STs) that emulate the important working principles of a biological synapse. The ONWs emulate the morphology of nerve fibers. With a core-sheath–structured ONW active channel and a well-confined 300-nm channel length obtained using ONW lithography, ~1.23 fJ per synaptic event for individual ONW was attained, which rivals that of biological synapses. The ONW STs provide a significant step toward realizing low-energy–consuming artificial intelligent electronics and open new approaches to assembling soft neuromorphic systems with nanometer feature size.

Keywords
  • artificial synapse
  • organic nanowire
  • energy consumption
  • organic electronics
  • bio-inspired electronics
  • short-term plasticity
  • long-term plasticity

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

View Full Text

More Like This