Acoustic phase micrographs in mesoscale materials characterization

W. Ngwa, W. Luo, T. Kundu, W. Grill

Research output: Contribution to journalConference articlepeer-review


Acoustic techniques are widely employed in health monitoring and nondestructive evaluation of materials. Phase micrographs obtained by phase-sensitive acoustic techniques often contain useful information complementary to the information acquirable from amplitude micrographs alone. Most of this information remains relatively unexploited due to the difficulties encountered in unwrapping and processing of the raw phase data. In this work, a review of the derivable information from the phase images of a scanning acoustic microscope with phase contrast (PSAM) is presented. Different perspectives and insights on sample structural and biological mesocale systems are discussed, predicated on phase information obtained by simulations and three-dimensional imaging.

Original languageEnglish (US)
Article number04
Pages (from-to)27-35
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2005
EventHealth Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV - San Diego, CA, United States
Duration: Mar 7 2005Mar 9 2005


  • Acoustic phase micrographs
  • Mesoscale systems
  • PSAM
  • Phase contrast
  • Phase information
  • Phase-sensitive acoustic microscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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