Journal
APPLIED PHYSICS LETTERS
Volume 110, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4979886
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Funding
- National Science Foundation (NSF) [PHY-1219334, PHY-1205465]
- National Natural Science Foundation of China [11502116]
- China Postdoctoral Science Foundation [2016M591849]
- Postdoctoral Science Foundation of Jiangsu Province [1601019A]
- Fundamental Research Funds for the Central Universities [30916014112-015]
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We investigated the dynamics of microbubbles induced by fs-laser irradiation of plasmonic micropyramids in water. We simulated the localized plasmonic enhancement on the micropyramids using a finite-difference time-domain (FDTD) technique and experimentally confirmed the enhancement by observing the laser-induced damage pattern on the substrate. Finally, we experimentally observed the generation of micrometer-sized bubbles on our fabricated structures. We find that the maximum bubble diameter and bubble lifetime depend on power, exposure time, and repetition rate of the laser. The maximum bubble diameter increases with laser exposure time until a balance is reached between the surface tension and the pressure inside and outside the bubble. Published by AIP Publishing.
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