Journal
JOURNAL OF LOW TEMPERATURE PHYSICS
Volume 165, Issue 3-4, Pages 166-176Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10909-011-0384-7
Keywords
Superfluid helium; Laser ablation; Nanoparticles; Nanowires; Turbulence
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Funding
- Schweizerischer Nationalfonds [200020-129831]
- LiMat
- Swiss National Science Foundation (SNF) [200020_129831] Funding Source: Swiss National Science Foundation (SNF)
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Laser ablation of metals in liquid helium results in the formation of metal filaments with diameters on the order of 2-10 nanometres and of spherical nanoparticles. In superfluid helium these nanowires aggregate into centimeter-sized networks. We study the morphology and the electric conductivity of these large aggregates, as well as extinction spectra and the crystalline structure of the individual nanofragments. We discuss the effect of superfluidity on the mechanisms of coalescence processes at the nanometer and centimeter scales.
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