Self- versus directed- assembly of nanoparticles via pulsed laser induced dewetting of patterned metal films

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Nano Letters

DOI:https://doi.org/10.1021/nl200921c· OSTI ID:1016610

Fowlkes, Jason Davidson ^[1]; Kondic, Lou ^[2]; Wu, Yeuyeng ^[3]; Rack, Philip D ^[1]; Diez, Javier A ^[4]

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1. ORNL
2. New Jersey Insitute of Technology
3. University of Tennessee, Knoxville (UTK)
4. Universidad Nacional del Centro de la Provincia de Buenos Aires

A nanoscale, synthetic perturbation was all that was required to nudge a natural, self-assembly process toward significantly higher order. Metallic thin film strips were transformed into nanoparticle arrays by nanosecond, liquid-phase dewetting. Arrays formed according to an evolving Rayleigh-Plateau instability, yet nanoparticle diameter and pitch were poorly controlled. However, by patterning a nanoscale sinusoid onto the original strip edge, a precise nanoparticle diameter and pitch emerged superseding the naturally evolving Rayleigh-Plateau instability.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1016610
• Journal Information: Nano Letters, Vol. 11, Issue 6; ISSN 1530--6984
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
INSTABILITY
LASERS
MELTING
THIN FILMS