SEVERAL methods for studying surface vibration modes using holography have recently been developed 1–3. These effectively contour the surface with interference fringes, which delineate points of equal ...

The World Health Organization reports that 360 million people worldwide are affected by hearing loss, generally caused by disease, accidents or damage to middle-ear structures. Researchers at ...

3D non-contact surface analysis is used extensively across the industry to measure surface irregularities and small displacements – it provides accurate, traceable and repeatable measurements. When ...