MASS BASED FILTRATION DEVICES AND METHOD OF FABRICATION USING BURSTS OF ULTRAFAST LASER PULSES

摘要

A mass separation device includes a transparent substrate and a plurality of small diameter cylindrically shaped orifices in the transparent substrate. The small diameter cylindrically shaped orifices include smooth wall surfaces and are not tapered. The small diameter cylindrically shaped orifices are drilled by photoacoustic compression and are clean and sharp and do not have ejecta mounds surrounding the orifice on the surface of the transparent substrate. The small diameter cylindrically shaped orifices in said transparent substrate are less than or equal to 1 μm in diameter. The transparent substrate is glass and preferably is borosilicate glass.

主权项

1. A mass separation device, comprising:
a transparent substrate; a plurality of small diameter cylindrically shaped orifices in said transparent substrate; said small diameter cylindrically shaped orifices include smooth wall surfaces; said small diameter cylindrically shaped orifices are not tapered; and, said small diameter cylindrically shaped orifices being drilled by photoacoustic compression.