Noble metal nanoparticles deposited on self-assembled monolayers by pulsed laser deposition show coulomb blockade at room temperature.
Nanometer-sized noble-metal clusters are fabricated on top of alkylthiolate self-assembled monolayers (SAMs) on annealed gold by pulsed laser deposition at elevated pressures. The size distribution of the clusters depends on the metal and on the pressure during the deposition. Scanning tunneling microscopy (STM) and conductive probe atomic force microscopy (CP-AFM) showed that the metal clusters are insulated from the substrate on top of the SAM. Coulomb blockades could be measured at room temperature by STM for palladium clusters on decanethiol SAMs.
Speets
Emiel A
EA
Laboratory of Supramolecular Chemistry and Technology, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands.
Dordi
Barbara
B
Ravoo
Bart Jan
BJ
Oncel
Nuri
N
Hallbäck
Ann-Sofie
AS
Zandvliet
Harold J W
HJ
Poelsema
Bene
B
Rijnders
Guus
G
Blank
Dave H A
DH
Reinhoudt
David N
DN
D004553:Electric Conductivity; D004559:Electric Wiring; D006046:Gold / Q000737:chemistry; D007834:Lasers; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D016252:Microscopy, Scanning Tunneling; D015335:Molecular Probes; D036103:Nanotechnology; D013499:Surface Properties; D013696:Temperature; D014159:Transducers
D015335:Molecular Probes; D006046:Gold