Posts Tagged ‘optical tweezers’
Stretch a gene to silence it
U. ARIZONA (US) — Cells may control genes by simply stretching them, a discovery that could pave the way for applications that require precise control over gene expression, such as the “lab on a chip.” Continue…
Monday, March 21, 2011 11:16 - 0 Comments
Science & Technology - May 24, 2010 17:31 - 4 Comments
Physicists prove Einstein wrong
U. TEXAS-AUSTIN (US)—A century after Albert Einstein said we would never be able to observe the instantaneous velocity of tiny particles as they randomly shake and shimmy, so called Brownian motion, physicists have done just that. (more…)
Science & Technology - Nov 16, 2009 17:14 - 0 Comments
Tiny light beam budges nanoscale object
CORNELL (US)—With a bit of leverage, researchers have used a very tiny beam of light with as little as 1 milliwatt of power to move a silicon structure up to 12 nanometers. That’s enough to completely switch the optical properties of the structure from opaque to transparent, they report. (more…)
Science & Technology - Sep 1, 2009 6:00 - 2 Comments
Tiny tweezers snag living cells
While optical tweezers are large and expensive, acoustic tweezers are smaller than a dime, small enough to fabricate on a chip using standard chip manufacturing techniques. They can also manipulate live cells without damaging or killing them. Above, the interdigital transducers (yellow) emit surface acoustic waves that push particles into position. (Credit: Tony Jun Huang and Jinjie Shi/Penn State)
