title: Evolution of Electronic Circuits using Carbon Nanotube Composites.
abstract: Evolution-in-materio concerns the computer controlled manipulation of material systems using external stimuli to train or evolve the material to perform a useful function. In this paper we demonstrate the evolution of a disordered composite material, using voltages as the external stimuli, into a form where a simple computational problem can be solved. The material consists of single-walled carbon nanotubes suspended in liquid crystal; the nanotubes act as a conductive network, with the liquid crystal providing a host medium to allow the conductive network to reorganise when voltages are applied. We show that the application of electric fields under computer control results in a significant change in the material morphology, favouring the solution to a classification task.
authors: School of Engineering and Computing Sciences, Durham University, South Road, Durham, DH1 3LE, UK.
authors: M K
authors: MK
authors: Massey
authors: School of Engineering and Computing Sciences, Durham University, South Road, Durham, DH1 3LE, UK.
authors: A
authors: A
authors: Kotsialos
authors: São Carlos Institute of Physics, University of São Paulo-USP, PO Box 369, 13566-590, São Carlos, SP, Brazil.
authors: D
authors: D
authors: Volpati
authors: School of Engineering and Computing Sciences, Durham University, South Road, Durham, DH1 3LE, UK.
authors: E
authors: E
authors: Vissol-Gaudin
authors: School of Engineering and Computing Sciences, Durham University, South Road, Durham, DH1 3LE, UK.
authors: C
authors: C
authors: Pearson
authors: Department of Physics, Durham University, South Road, Durham, DH1 3LE, UK.
authors: L
authors: L
authors: Bowen
authors: School of Engineering and Computing Sciences, Durham University, South Road, Durham, DH1 3LE, UK.
authors: B
authors: B
authors: Obara
authors: School of Engineering and Computing Sciences, Durham University, South Road, Durham, DH1 3LE, UK.
authors: D A
authors: DA
authors: Zeze
authors: School of Engineering and Computing Sciences, Durham University, South Road, Durham, DH1 3LE, UK.
authors: C
authors: C
authors: Groves
authors: School of Engineering and Computing Sciences, Durham University, South Road, Durham, DH1 3LE, UK.
authors: M C
authors: MC
authors: Petty