ArticlePhotoacoustics2020
Three-phase vaporization theory for laser-activated microcapsules.
Article in Photoacoustics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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0 citing papers in PubMed, 3 citations in OpenAlex.
No citing paper in PubMed yet.
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Precision control of vaporization, both in space and time, is critical for numerous applications, including medical imaging and therapy, catalysis and energy conversion, and it can be greatly improved through the use of micro- or nano-sized light absorbers. Ultimately, optimization of these applications also requires a fundamental understanding of the vaporization process. Upon laser irradiation, polymeric microcapsules containing a dye can vaporize, leading to the growth of a vapor bubble that emits a strong acoustic signature. Here, we compare laser-activated capsules containing either a volatile or a non-volatile oil core. We theoretically explore the vaporization of the capsules based on a three-phase thermodynamics model, that accounts for the partial vaporization of both the surrounding fluid and the oil core as well as for the interaction between heat transfer and microbubble growth. The model is compared to ultra-high-speed imaging experiments, where we record the cavitation events. Theory and experiments are in convincing agreement.
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