Physics of Fluids - Publications

Fast and High-Resolution Ultrasound Pressure Field Mapping Using Luminescent Membranes

Open Access
Advanced Optical Materials 9, 2100085 (2021)

Authors

	Simon Michels
	M. Kersenmans
	Michel Versluis
	Guillaume Lajoinie
	P.F. Smet

BibTeΧ

@article{https://doi.org/10.1002/adom.202100085,
author = {Michels, Simon E. and Kersemans, Mathias and Versluis, Michel and Lajoinie, Guillaume and Smet, Philippe F.},
title = {Fast and High-Resolution Ultrasound Pressure Field Mapping Using Luminescent Membranes},
journal = {Advanced Optical Materials},
volume = {n/a},
number = {n/a},
pages = {2100085},
keywords = {luminescence, thermoluminescence, ultrasound, visualization},
doi = {https://doi.org/10.1002/adom.202100085},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/adom.202100085},
eprint = {https://onlinelibrary.wiley.com/doi/pdf/10.1002/adom.202100085},
abstract = {Abstract Ultrasound is used extensively in medical imaging and therapy, non-destructive testing, flow sensing, underwater range assessment, and acoustic microscopy. To ensure the accuracy of these techniques, detailed knowledge of the acoustic pressure field produced by the ultrasonic transducer is required. This paper proposes a functional polymer membrane loaded with ultrasound-activated luminescent microparticles. The semitransparent membrane makes use of the luminescent properties of BaSi2O2N2:Eu2+ to convert ultrasonic pressure into visible light in a fast and straightforward way, through a process termed acoustically produced luminescence (APL). APL is shown to work within a wide range of acoustic frequencies (1‚Äì25¬†MHz) and pressures (50¬†kPa‚Äì4.5¬†MPa), and enables a quantitative characterization of ultrasound fields with a lateral spatial resolution below 200¬†¬µm. At the investigated pressures and frequencies, the light generation mechanism is essentially related to ultrasonic heating rather than mechanical stimulation. These membranes offer effective field mapping possibilities, much faster than conventional time consuming point-by-point hydrophone scanning.}
}