Nanomanufacturing via fast laser-induced self-organization in thin metal films

C. Favazza; H. Krishna; R. Sureshkumar; R. Kalyanaraman

doi:10.1117/12.734490

10 September 2007 Nanomanufacturing via fast laser-induced self-organization in thin metal films

C. Favazza, H. Krishna, R. Sureshkumar, R. Kalyanaraman

Proceedings Volume 6648, Instrumentation, Metrology, and Standards for Nanomanufacturing; 664809 (2007) https://doi.org/10.1117/12.734490
Event: NanoScience + Engineering, 2007, San Diego, California, United States

Abstract

Robust nanomanufacturing methodologies are crucial towards realizing simple and cost-effective products. Here we discuss nanofabrication of ordered metal nanoparticles through pulsed-laser-induced self-organization. When ultrathin metal films are exposed to short laser pulses, spontaneous pattern formation results under appropriate conditions. Under uniform laser irradiation two competing modes of self-organization are observed. One, a thin film hydrodynamic dewetting instability due to the competition between surface tension and attractive van derWaals interactions, results in nanoparticles with well-defined and predictable interparticle spacings and sizes with short range spatial order. The second, thermocapillary flow due to interference between the incident beam and a scattered surface wave, results in laser induced periodic surface structures. Non-uniform laser irradiation, such as by 2-beam laser interference irradiation, initiates a tunable thermocapillary effect in the film giving rise to nanowires, and continued laser irradiation leads to a Rayleigh-like breakup of the nanowires producing nanoparticles with spatial long-range and short-range order. These self-organizing approaches appear to be applicable to a variety of metal films, including Co, Cu, Ag, Fe, Ni, Pt, Zn, Ti, V and Mn. These results suggest that laser-induced self-organization in thin films could be an attractive route to nanomanufacture well-defined nanoparticle arrangements for applications in optical information processing, sensing and solar energy harvesting.

Citation Download Citation

C. Favazza, H. Krishna, R. Sureshkumar, and R. Kalyanaraman "Nanomanufacturing via fast laser-induced self-organization in thin metal films", Proc. SPIE 6648, Instrumentation, Metrology, and Standards for Nanomanufacturing, 664809 (10 September 2007); https://doi.org/10.1117/12.734490

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available