Europhys. Lett.
Volume 68, Number 6, December 2004
Page(s) 874 - 880
Section Condensed matter: electronic structure, electrical, magnetic, and optical properties
Published online 30 November 2004
Europhys. Lett., 68 (6), pp. 874-880 (2004)
DOI: 10.1209/epl/i2004-10297-y

Artificial ion channels and spike computation in modulation-doped semiconductors

A. Nogaret1, N. J. Lambert1, S. J. Bending1 and J. Austin2

1  Department of Physics, University of Bath - Bath BA2 7AY, UK
2  Department of Computer Science, University of York - York YO10 5DD, UK

received 29 June 2004; accepted in final form 25 October 2004
published online 30 November 2004

Semiconductor pn microwires are shown to replicate the physical characteristics of biological nerve fibres that condition the propagation and summation of electrical spikes. The spatio-temporal response of the nanowire to sequences of synaptic impulses is modelled using finite elements. We explain how networks of pn wires could be interconnected to construct fully asynchronous neural networks. These ideas are applied to the elementary XOR problem.

73.63.-b - Electronic transport in nanoscale materials and structures.
87.18.Sn - Neural networks.

© EDP Sciences 2004