An acoustic field distribution investigation in air requires a small receiving sensor. Needle
hydrophones seem to be an attractive solution, and it has previously been demonstrated that …

Air-coupled ultrasound (ACU) is increasingly used for nondestructive testing (NDT). With
ACU, no contact or coupling agent (eg, water and ultrasound gel) is needed between …

Non-Line-of-Sight (NLOS) imaging reconstructs occluded scenes based on indirect diffuse
reflections. The computational complexity and memory consumption of existing NLOS …

Characterizing the radiated or received acoustic field of ultrasonic transducers using the
spatial impulse response (SIR) represents an important step in testing, design, and …

Study objective The three-dimensional shape of the ultrasound beam produces a thicker
scan plane than most users assume. Viewed longitudinally, a needle placed lateral to a …

Air-coupled ultrasonic probes require a special design approach and handling due to the
significant mismatch to the air. Outer matching layers have to be soft so can be easily …

Most ultrasonic probes present a layered structure that may comprise delay lines, acoustic
lens, wear plates, matching layers, electrodes, piezoelectric layers, and a backing block …

Non-destructive ultrasonic testing is utilized widely by industries for quality assurance. For
sensitive materials or surfaces, non-contact, non-destructive testing methods are in demand …

Purpose To develop an in vitro culture system for tissue engineering to mimic the in vivo
environment and evaluate the applicability of ultrasound and PLGA particle system. Methods …

For real-time evaluation of non-destructive air-coupled ultrasonic testing of wood-based
materials, efficient and reliable calculation methods from ultrasonic holography are …