Highly compressible fluorescent particles for pressure sensing in liquids

F. Cellini, S. D. Peterson, M. Porfiri

Research output: Contribution to journalArticlepeer-review


Pressure sensing in liquids is important for engineering applications ranging from industrial processing to naval architecture. Here, we propose a pressure sensor based on highly compressible polydimethylsiloxane foam particles embedding fluorescent Nile Red molecules. The particles display pressure sensitivities as low as 0.0018 kPa-1, which are on the same order of magnitude of sensitivities reported in commercial pressure-sensitive paints for air flows. We envision the application of the proposed sensor in particle image velocimetry toward an improved understanding of flow kinetics in liquids.

Original languageEnglish (US)
Article number221904
JournalApplied Physics Letters
Issue number22
StatePublished - May 29 2017

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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