Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

A high-frequency, 2-D array element using thermoelastic expansion in PDMS.

Takashi Buma1, Monica Spisar, Matthew O'Donnell

  • 1Applied Physics Program and Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-2125, USA. takbuma@eecs.umich.edu

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|October 17, 2003
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Transcranial acoustoelectric imaging (tABI) of seizure activity in human head model with neuronavigation.

Journal of neural engineering·2026
Same author

Infection Prevention and Control in the Intensive Care Unit.

Critical care clinics·2026
Same author

Nearest neighbors phase control for optical phased array communications.

Optics express·2026
Same author

Complementary fluorescence and photoacoustic imaging of tozuleristide in muscle tissue in vitro- toward optically-guided solid tumor surgery: feasibility studies.

Scientific reports·2026
Same author

Deep learning-driven quantitative spectroscopic photoacoustic imaging for segmentation and oxygen saturation estimation.

Ultrasonics·2026
Same author

Reconstruction of tensile and shear elastic moduli in anisotropic nearly incompressible media using Rayleigh wave phase and group velocities.

Journal of biomedical optics·2025
Same journal

Theoretical Foundations of the Echo Envelope Statistical Modeling: A Tutorial.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Practical Demonstrations of FR3-Band Thin-Film Lithium Niobate Acoustic Filter Design.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Real-Time Heterogeneous Helical Wave Spectrum Method for Transabdominal Passive Acoustic Mapping.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Cascaded Plane Wave Ultrasound Velocity Vector Imaging: In Vivo Feasibility in Carotid Arteries.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Quantitative Acoustic Attenuation Scanning Using a Phase-Insensitive Ultrasound Computed Tomography System.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

FPGA-Accelerated CNN Reconstruction for Low-Power Sparse-Array Ultrasound Imaging.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
See all related articles

Researchers improved optical ultrasound generation by replacing glass with PDMS, eliminating leaky Rayleigh waves. This creates a broad, smooth acoustic field ideal for high-frequency 2-D phased arrays.

Area of Science:

  • Acoustics
  • Materials Science
  • Optics

Background:

  • Optical generation of ultrasound offers an alternative to piezoelectricity for high-frequency arrays.
  • Traditional thermoelastic optical ultrasound generation has low conversion efficiency.
  • Previous work improved efficiency using a polydimethylsiloxane (PDMS) and carbon black absorbing layer on glass.

Purpose of the Study:

  • To investigate the acoustic radiation pattern of optical ultrasound elements with high spatial resolution.
  • To identify factors limiting the performance of PDMS/glass optical ultrasound transducers.
  • To develop an improved substrate for optical ultrasound generation suitable for 2-D phased arrays.

Main Methods:

  • Utilized high spatial resolution (5-microm) radiation pattern measurements.

Related Experiment Videos

  • Investigated the acoustic field radiated from PDMS/carbon black layers on glass and clear PDMS substrates.
  • Analyzed the impact of leaky Rayleigh waves on the acoustic output.

    • Main Results:

    • High-resolution measurements revealed acoustic field degradation due to leaky Rayleigh waves from the PDMS/glass interface.
    • Leaky Rayleigh waves were successfully eliminated by replacing the glass substrate with a clear PDMS substrate.
    • The PDMS/PDMS interface produced a broad and smooth radiation pattern.

    Conclusions:

    • Leaky Rayleigh waves generated at the PDMS/glass interface significantly degrade the acoustic performance of optical ultrasound elements.
    • Using a clear PDMS substrate effectively suppresses these waves, enabling a superior radiation pattern.
    • This approach is suitable for developing 2-D phased arrays operating at frequencies above 50 MHz.