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Proceedings Paper

Characterization and release of surface energy in nanoparticles
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Paper Abstract

We develop laser-based technologies for characterization and release of Surface Tension Energy (STE) in nanoparticle structures. Nanoparticle dispersed materials offer a very high potential to store energy in the form of Surface Tension. An important benefit of these systems is the increased safety and control of energy storage compared to existing chemical systems. The release technology is based on excitation of resonant plasmons in metal nanoparticles and their further laser-induced coalescence, whereas the characterization technology is related to the extraordinary sensitivity of nonlinear optical effects in nanoparticles to their surface conditions and properties. The direct relation between STE and nonlinear optical parameters of nanoparticles permits use of optical second-harmonic generation (SHG) to measure STE. The SHG probe can be applied to characterize surface properties of a wide variety of nanoparticle materials, particularly active and smart materials. In terms of surface energy elease, we concentrate on nanoparticle-dispersed materials in the form of arrays of metal nanoparticles. External laser radiation is considered to trigger interparticle coalescence due to excitation of local plasmons that are specific electro-magnetic modes in metal nanoparticles. Local plasmon excitation, in turn, lead to surface energy release in the wake of fusion of excited nanoparticles.

Paper Details

Date Published: 16 May 2005
PDF: 10 pages
Proc. SPIE 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics, (16 May 2005); doi: 10.1117/12.598880
Show Author Affiliations
Oleg A. Aktsipetrov, Brookhaven Technology Group, Inc. (United States)
Moscow State Univ. (Russia)
Tatyana V. Murzina, Brookhaven Technology Group, Inc. (United States)
Moscow State Univ. (Russia)
J. Paul Farrell, Brookhaven Technology Group, Inc. (United States)
Marina V. A. Murzina, Brookhaven Technology Group, Inc. (United States)


Published in SPIE Proceedings Vol. 5761:
Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics
William D. Armstrong, Editor(s)

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