Nanometer-Scale Laser Direct-Write Using Near-Field Optics

Grigoropoulos, Costas P. and Hwang, David J. and Chimmalgi, A.. (2007) Nanometer-Scale Laser Direct-Write Using Near-Field Optics. MRS bulletin, 32 (1). pp. 16-22. ISSN 0883-7694

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This article summarizes research on laser-based processing and structuring of materials at the nanoscale using optical near-field schemes. Both apertureless and tapered fiber near-field scanning optical microscope probes can deliver highly confined irradiation at sufficiently high intensities to cause morphological and structural changes in materials at the nanometer level. The energy emitted by the probes and the absorption within the target material are predicted by carrying out calculations of the near-field electromagnetic distribution. The effects of shrinking laser beam dimensions compete with the energy diffusion into the target material. Experimental results have shown well-controlled subtractive material modification with minimum feature size in the neighborhood of 10 nm. Precise patterning can be achieved via laser-assisted chemical etching. Control of the nucleation of nanostructures via rapid melting and crystallization is demonstrated. The article concludes with an outlook to applications.

Item Type: Article
InterNano Taxonomy: Nanomanufacturing Characterization Techniques > Scanning Probe Microscopy > Near-field scanning optical microscopy (NSOM)
Nanomanufacturing Processes > Nanopatterning/Lithography
Collections: Nanomanufacturing Research Collection > Nanomanufacturing Nanoscale Science and Engineering Centers > Center for Scalable and Integrated Nanomanufacturing
Depositing User: Moureen Kemei
Date Deposited: 29 Mar 2010 21:51
Last Modified: 30 Sep 2014 15:05

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