Assembly of gold nanoparticles of different diameters between nanogap electrodes

Journal Article · Mon Jan 04 04:00:00 EST 2010 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3280859· OSTI ID:21347232

Cheon, Donguk; Kumar, Sanjeev; Kim, Gil-Ho ^[1]

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1. Department of Electronic and Electrical Engineering and Sungkyunkwan University Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of)

Gold nanoparticles (NPs) of different diameters i.e., 5, 10, and 20 nm, were assembled between 20 nm gap electrodes using ac dielectrophoresis (DEP) process. DEP parameters, such as frequency, trapping time, and voltage of value 1 MHz, 1 s, and 2-3 V, respectively, led to the pearl-chain assembly corresponding to each type of NPs between 20 nm gap electrodes. Mutual DEP could be attributed to the NPs chaining in low field regions and subsequently the DEP force directs these chains to the trapping region. Such controlled assembly of individual NPs may find application in fabricating devices for molecular electronics.

• OSTI ID: 21347232
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 1 Vol. 96; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CHEMISTRY
ELECTRIC POTENTIAL
ELECTROCHEMISTRY
ELECTRODES
ELECTROPHORESIS
ELEMENTS
FREQUENCY RANGE
GOLD
METALS
MHZ RANGE
NANOSTRUCTURES
PARTICLES
TRANSITION ELEMENTS
TRAPPING