Amplitude and Phase Acoustic Microscopy and its Application to QNDE

Scanning microdeformation microscopy in reflection mode

“…[3][4][5][6][7][8][9][10][11][12] Experimentally, a small tip or a pinhole 9 is used to generate an acoustic field at the sample surface. Many authors have indeed reported that the high resolution of near-field techniques can be used to detect acoustic waves.…”