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Biotech / Medical : Gene therapy

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To: mike head who wrote (34)	3/27/1999 9:14:00 AM
From: Mike McFarland	Read Replies (1) of 319

Nanofabricated artificial gels could replace cumbersome organic polymers to speed DNA sequencing news.cornell.edu Turner's artificial gels are forests of vertical pillars with sizes down to 100 nanometers (nm) thick and 100 nm apart. (A nanometer is one billionth of a meter.) They are smaller, Craighead believes, than earlier versions of artificial sieves, an achievement made possible by using the Cornell Nanofabrication Facility's electron-beam lithography tools, which can lay out features much smaller than those used so far in commercial integrated circuits. Ordinarily such devices are made by etching a cavity in the silicon, then gluing on a cover to create a channel through which the DNA sample can flow. Turner used a new technique in which the channel is filled with a "sacrificial layer" that can be etched out after a covering layer is deposited. This allows much more precise control of the height of the channel, he explained. _________ p.s. mike head: as far as the dead url...I meant the url that you gave in post 31 is dead...the one that begins with nt.excite... I saw SEPR was given the nod over on Harmon's thread...did you note how Sepracor gapped up friday at 124 and slid all day to below 112--the approval might rate as news of the day...but "sell on the news" was play of the day.

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