1. Enclosure Gel filled, ultrasonically welded, high density ABS housing.

2. An excitation device is operable to ultrasonically excite the ultrasonic waveguide and the agitating member.

3. Ultrasonically bonded laminated absorbent products comprising a first substrate, a second substrate, and an adhesive composition are disclosed.

4. Cavitation of ultrasonically formed bubbles results in localized temperatures as high as 5000[degrees]C and pressures as high as 1000 atmospheres in less than one microsecond

5. The texture can be provided by sheet surfaces that are mechanically or ultrasonically embossed or are bubble-cushioned (204) or which have sealed pleats (224) or accordion folds.

6. The cantilever of a probe-based metrology instrument such as an AFM is deflected by directing a beam of ultrasonic energy at the cantilever to apply ultrasonically generated acoustic radiation pressure to the cantilever.