Article Title

Convective assembly of linear gold nanoparticle arrays at the micron scale for surface enhanced Raman scattering

Authors

Lihua Qian, Nevada Nanotechnology Center, Howard R. Hughes College of Engineering, University of Nevada, Las Vegas, Nevada 89154-4026, USA
Ronobir Mookherjee, Nevada Nanotechnology Center, Howard R. Hughes College of Engineering, University of Nevada, Las Vegas, Nevada 89154-4026, USA Advanced Technologies Academy, 2501 Vegas Drive, Las Vegas, NV 89106, USA

Keywords

Convective assembly, gold nanoparticle, surface enhanced Raman scattering, pipette writing

Abstract

ABSTRACT A convective assembly technique at the micron scale analogous to the writing action of a “pipette pen” has been developed for the linear assembly of gold nanoparticle strips with micron scale width and millimeter scale length for surface enhanced Raman scattering (SERS). The arrays with interparticle gaps smaller than 3 nm are hexagonally stacked in the vicinity of the pipette tip. Variable numbers of stacked layers and clean surfaces of the assembled nanoparticles are obtained by optimizing the velocity of the pipette tip. The SERS properties of the assembled nanoparticle arrays rely on their stacking number and surface cleanliness.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-011-0159-0

Publisher

Tsinghua University Press

Recommended Citation

Lihua Qian,Ronobir Mookherjee, Convective assembly of linear gold nanoparticle arrays at the micron scale for surface enhanced Raman scattering. NanoRes.2011, 4(11): 1117-1128