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Title: Air-coupled acoustic radiation force for non-contact generation of broadband mechanical waves in soft media

Abstract

A non-contact method for efficient, non-invasive excitation of mechanical waves in soft media is proposed, in which we focus an ultrasound (US) signal through air onto the surface of a medium under study. The US wave reflected from the air/medium interface provides radiation force to the medium surface that launches a transient mechanical wave in the transverse (lateral) direction. The type of mechanical wave is determined by boundary conditions. To prove this concept, a home-made 1 MHz piezo-ceramic transducer with a matching layer to air sends a chirped US signal centered at 1 MHz to a 1.6 mm thick gelatin phantom mimicking soft biological tissue. A phase-sensitive (PhS)-optical coherence tomography system is used to track/image the mechanical wave. The reconstructed transient displacement of the mechanical wave in space and time demonstrates highly efficient generation, thus offering great promise for non-contact, non-invasive characterization of soft media, in general, and for elasticity measurements in delicate soft tissues and organs in bio-medicine, in particular.

Authors:
 [1];  [2];  [1];  [3]; ; ; ;  [1];  [1];  [4]; ;  [1];  [4]
  1. Department of Bioengineering, University of Washington, Seattle, Washington 98195 (United States)
  2. (Poland)
  3. (Russian Federation)
  4. (United States)
Publication Date:
OSTI Identifier:
22594451
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 4; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AIR; ANIMAL TISSUES; BOUNDARY CONDITIONS; CERAMICS; DRUGS; ELASTICITY; EXCITATION; GELATIN; IMAGES; LAYERS; MHZ RANGE 01-100; PHANTOMS; SIGNALS; SURFACES; TOMOGRAPHY; TRANSDUCERS; TRANSIENTS

Citation Formats

Ambroziński, Łukasz, AGH University of Science and Technology, Krakow 30059, Pelivanov, Ivan, E-mail: ivanp3@uw.edu, Faculty of Physics, Moscow State University, Moscow 119991, Song, Shaozhen, Yoon, Soon Joon, Gao, Liang, O'Donnell, Matthew, Li, David, Department of Chemical Engineering, University of Washington Seattle, Washington 98195, Shen, Tueng T., Wang, Ruikang K., and Department of Ophthalmology, University of Washington, Seattle, Washington 98104. Air-coupled acoustic radiation force for non-contact generation of broadband mechanical waves in soft media. United States: N. p., 2016. Web. doi:10.1063/1.4959827.
Ambroziński, Łukasz, AGH University of Science and Technology, Krakow 30059, Pelivanov, Ivan, E-mail: ivanp3@uw.edu, Faculty of Physics, Moscow State University, Moscow 119991, Song, Shaozhen, Yoon, Soon Joon, Gao, Liang, O'Donnell, Matthew, Li, David, Department of Chemical Engineering, University of Washington Seattle, Washington 98195, Shen, Tueng T., Wang, Ruikang K., & Department of Ophthalmology, University of Washington, Seattle, Washington 98104. Air-coupled acoustic radiation force for non-contact generation of broadband mechanical waves in soft media. United States. doi:10.1063/1.4959827.
Ambroziński, Łukasz, AGH University of Science and Technology, Krakow 30059, Pelivanov, Ivan, E-mail: ivanp3@uw.edu, Faculty of Physics, Moscow State University, Moscow 119991, Song, Shaozhen, Yoon, Soon Joon, Gao, Liang, O'Donnell, Matthew, Li, David, Department of Chemical Engineering, University of Washington Seattle, Washington 98195, Shen, Tueng T., Wang, Ruikang K., and Department of Ophthalmology, University of Washington, Seattle, Washington 98104. 2016. "Air-coupled acoustic radiation force for non-contact generation of broadband mechanical waves in soft media". United States. doi:10.1063/1.4959827.
@article{osti_22594451,
title = {Air-coupled acoustic radiation force for non-contact generation of broadband mechanical waves in soft media},
author = {Ambroziński, Łukasz and AGH University of Science and Technology, Krakow 30059 and Pelivanov, Ivan, E-mail: ivanp3@uw.edu and Faculty of Physics, Moscow State University, Moscow 119991 and Song, Shaozhen and Yoon, Soon Joon and Gao, Liang and O'Donnell, Matthew and Li, David and Department of Chemical Engineering, University of Washington Seattle, Washington 98195 and Shen, Tueng T. and Wang, Ruikang K. and Department of Ophthalmology, University of Washington, Seattle, Washington 98104},
abstractNote = {A non-contact method for efficient, non-invasive excitation of mechanical waves in soft media is proposed, in which we focus an ultrasound (US) signal through air onto the surface of a medium under study. The US wave reflected from the air/medium interface provides radiation force to the medium surface that launches a transient mechanical wave in the transverse (lateral) direction. The type of mechanical wave is determined by boundary conditions. To prove this concept, a home-made 1 MHz piezo-ceramic transducer with a matching layer to air sends a chirped US signal centered at 1 MHz to a 1.6 mm thick gelatin phantom mimicking soft biological tissue. A phase-sensitive (PhS)-optical coherence tomography system is used to track/image the mechanical wave. The reconstructed transient displacement of the mechanical wave in space and time demonstrates highly efficient generation, thus offering great promise for non-contact, non-invasive characterization of soft media, in general, and for elasticity measurements in delicate soft tissues and organs in bio-medicine, in particular.},
doi = {10.1063/1.4959827},
journal = {Applied Physics Letters},
number = 4,
volume = 109,
place = {United States},
year = 2016,
month = 7
}
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