Charge transport in cellular nanoparticle networks: meandering through nanoscale mazes.
The transport of electrons through topologically complex two-dimensional Au nanoparticle networks has been investigated using a combination of low temperature (4.5 K) direct current I(V) measurements and numerical simulations. Intricate, spatially correlated nanostructured networks were formed via spin-casting. The topological complexity of the nanoparticle assemblies produces I(V) curves associated with nonlinearity exponents, zeta approximately 4.0. Simulations based on tunneling transport in sparse and inhomogeneous planar networks are used to elucidate the influence of topology on the value of zeta.
Blunt
Matthew O
MO
The School of Physics and Astronomy, The University of Nottingham, Nottingham NG7 2RD, UK.
Suvakov
Milovan
M
Pulizzi
Fabio
F
Martin
Christopher P
CP
Pauliac-Vaujour
Emmanuelle
E
Stannard
Andrew
A
Rushforth
Andrew W
AW
Tadić
Bosiljka
B
Moriarty
Philip
P
D003198:Computer Simulation; D004563:Electrochemistry / Q000379:methods*; D004579:Electron Transport; D006046:Gold / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008956:Models, Chemical; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D055672:Static Electricity; D013499:Surface Properties
D046911:Macromolecular Substances; D006046:Gold