Nanochannel filter

Details Nanochannel filter Nanochannel filter

B - Operations, Transporting

01

D

B01D 71/04 (2006.01) B01D 39/20 (2006.01) B01D 61/14 (2006.01) B01D 67/00 (2006.01) B01D 69/02 (2006.01) G01N 30/60 (2006.01) G02B 5/20 (2006.01) G01N 30/52 (2006.01)

Patent

CA 2137800

A glass filter having channels therethrough of an average diameter less than 1 micron, made by inserting acid etchable glass rods into respective innert hollow glass tubes; heating and fusing the rods to the tubes; drawing the fused-rods and tubes forming filaments; forming a stack of filaments; heating and fusing the stack of filaments to form an elongated bar; drawing the bar; cutting the bar to form a wafer-like filter; annealing fhe filter; and etching the fitter to form channels therethrough,

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