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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
sough
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'
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