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Selected immobilization of individual nanoparticles by spot-exposure electron-beam-induced deposition

Daniel J Burbridge1, Simon Crampin1, Guillaume Viau2 and Sergey N Gordeev1

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The use of spot-exposure electron-beam-induced deposition (EBID) to immobilize targeted nanoparticles on a substrate is demonstrated, and investigated using experiment and simulation. Nanoparticles are secured in place through the build-up of carbonaceous material that forms in the region between a particle and substrate when an energetic electron beam is focused onto the particle and projected through to the substrate. Material build-up directly affects the strength of adhesion to the surface, and can be controlled through electron dosage and beam energy. By selectively immobilizing specific particles within surface agglomerations and removing the excess, we illustrate the potential for spot-exposure EBID as a new technique for nanofabrication.


PACS

81.16.-c Methods of nanofabrication and processing

61.46.Df Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)

81.07.-b Nanoscale materials and structures: fabrication and characterization

81.15.Ef Vacuum deposition

Subjects

Surfaces, interfaces and thin films

Nanoscale science and low-D systems

Dates

Issue 4 (29 January 2010)

Received 2 September 2009, in final form 27 November 2009

Published 10 December 2009



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