학술논문
Laser-Assisted Detection of Metal Nanoparticles inLiquid He-II.
Document Type
Article
Author
Source
Subject
*METAL nanoparticles
*LASER beams
*HEAT transfer
*LIQUID helium
*PLASMONS (Physics)
*ATOMIC force microscopy
*PARTICLE size distribution
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Language
ISSN
1089-5639
Abstract
The formation of gas bubbles surroundinglaser heated copper nanoparticlesin superfluid helium at 1.7 K is observed. Because of the effectivelight capture by these plasmonic particles and the subsequent heattransfer into the liquid, such bubbles grow within 3 μs to tensof micrometers in size. The Schlieren imaging technique is used todetermine the spatial distribution of the nanoparticles in the liquid,and the gas bubble radii are related to the parent nanoparticle size.The presented liquid-phase particle size analysis is validated againstatomic force microscopy measurements of nanoparticles deposited fromthe liquid onto a solid substrate. [ABSTRACT FROM AUTHOR]