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Latest Thomas Perkins Stories

Stripping Gold From AFM Probes Allows Better Measurement Of Picoscale Forces
2012-06-28 12:02:30

Gold is not necessarily precious–at least not as a coating on atomic force microscope (AFM) probes. JILA researchers found that removing an AFM probe's gold coating–until now considered helpful–greatly improved force measurements performed in a liquid, the medium favored for biophysical studies such as stretching DNA or unfolding proteins. As described in Nano Letters,* stripping the gold from the diving-board-shaped probe, or cantilever, with a brief chemical bath...

2008-04-22 12:00:55

AUBURN HILLS, Mich., April 22 /PRNewswire-FirstCall/ -- A new, more effective surgery to repair a common sports-related knee injury, the torn ACL (anterior cruciate ligament), is now available in Michigan. "This innovative technique more accurately recreates an ACL's normal anatomy," explains Dr. John Samani, M.D. "We believe this procedure also stabilizes the knee to a degree never seen before with traditional ACL reconstruction." Samani, and his partner, Dr. Thomas Perkins, D.O.,...


Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
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