Title

Dielectrophoretic Assembly Of Single Gold Nanoparticle Into Nanogap Electrodes

Keywords

Dielectrophoresis; Gold nanoparticles; Nanogap electrodes; Self assembly

Abstract

We report the optimization study of assembling single 20 nm gold nano-particle in 20 nm spaced electrode gap via ac dielectrophoresis (DEP) technique. It was observed that time, voltage, and frequency variations influenced significantly the assembly of gold nano-particle in the nano-gap electrodes. Frequency variation study revealed that at lower frequencies (<1 MHz) the assembling was observed in low field regions; however, at a moderate frequency of 1 MHz, minimum number of nano-particles was assembled in high field region. Trapping of single 20 nm nano-particle in 20 nm spaced electrodes was successfully achieved under the optimized DEP parameters i.e., frequency, applied voltage and time of values corresponding to 1 MHz, 2 V, and 1 sec, respectively, with the yield of almost 66%. Our results show the promise of optimized dielectrophoresis in the future nano-engineering. Copyright © 2008 American Scientific Publishers All rights reserved.

Publication Date

7-1-2008

Publication Title

Journal of Nanoscience and Nanotechnology

Volume

8

Issue

7

Number of Pages

3427-3433

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1166/jnn.2008.129

Socpus ID

55849122699 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/55849122699

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