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Switchable Acoustic and Optical Resolution Photoacoustic Microscopy for In Vivo Small-animal Blood Vasculature Imaging

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Scanning acoustic microscopy for material evaluation.

¹Korea Research Institute of Science and Standards, Daejeon, 34113, South Korea. peacewithu@kriss.re.kr.

Applied Microscopy

|February 13, 2021

Summary

This summary is machine-generated.

Scanning acoustic microscopy (SAM) detects internal defects like cracks and voids in various materials non-destructively. Advanced acoustic imaging enhances defect detection and material property analysis with high efficiency.

Keywords:

Acoustic Analysis Crack Defect Delamination Microscopy Non-destructive Scanning Void

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Area of Science:

Materials Science
Non-Destructive Testing
Acoustic Imaging

Background:

Scanning acoustic microscopy (SAM), also known as Acoustic Micro Imaging (AMI), is a non-destructive technique for detecting internal defects in diverse materials.
It excels at identifying physical flaws such as cracks, voids, and delamination with high sensitivity by analyzing internal sample features.
Advanced techniques like ultrasound impedance microscopy and gigahertz microscopy offer deeper insights into material properties.

Purpose of the Study:

To provide an overview of SAM principles.
To demonstrate modern acoustic imaging applications with real-world results.
To highlight the versatility and efficiency of advanced acoustic diagnostic tools.

Main Methods:

Utilizing focus pathway and image reconstruction algorithms for various inspection modes (vertical, horizontal, diagonal cross-sections).
Reconstructing images from reflected echoes based on acoustic impedance changes at material interfaces or defects.
Employing SAM/AMI for non-destructive evaluation of elastic, biological, and non-transparent hard materials.

Main Results:

Demonstrated the capability of modern acoustic imaging technology through various applications.
Successfully reconstructed images revealing internal structures and defects.
Showcased the effectiveness of different inspection modes for detailed analysis.

Conclusions:

Novel acoustic technology expands the scope of SAM as a versatile diagnostic tool.
The technique offers high efficiency and requires less time for defect detection.
SAM provides a powerful method for non-destructive evaluation and material characterization.