Intrinsic multistate switching of gold clusters through electrochemical gating.
The electrochemical behavior of small metal nanoparticles is governed by Coulomb-like charging and equally spaced charge-transfer transitions. Using electrochemical gating at constant bias voltage, we show, for the first time, that individual nanoparticles can be operated as multistate switches in condensed media at room temperature, displaying distinct peak features in the tunneling current. The tunneling conductance increases with particle charge, suggesting that solvent reorganization and dielectric saturation become increasingly important.
Albrecht
Tim
T
Department of Chemistry, Nano DTU, Technical University of Denmark, Kemitorvet, Building 207, 2800 Kongens Lyngby, Denmark. t.albrecht@imperial.ac.uk
Mertens
Stijn F L
SF
Ulstrup
J
J
D000465:Algorithms; D002384:Catalysis; D004563:Electrochemistry; D004566:Electrodes; D004583:Electrons; D006046:Gold / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles; D010984:Platinum; D012997:Solvents; D013057:Spectrum Analysis
D012997:Solvents; D010984:Platinum; D006046:Gold