Home > News > 'Negative stiffness' used to damp vibrations
April 19th, 2007
'Negative stiffness' used to damp vibrations
Angstrom-level accuracy is needed to stabilize platforms used in applications like microelectromechanical system testing, nanoscale metrology and semiconductor fabrication tools. One company is developing products based on a mechanism called negative stiffness to cancel vibrations.
"The U.S. Air Force couldn't find a place quiet enough to test their next-generation acceleratometers and gyros," said David Platus, CEO of Minus K Technology Inc. (Inglewood, Calif.). "That got me thinking about a negative stiffness mechanism to cancel out vibrations."
Since the 1960s, the best way to isolate precise instruments like atomic-force and scanning-tunneling microscopes along with fab tools from vibration was passive air tables that support weight on a cushion of air. A recent alternative is using active electronic feedback to send cancelling forces that damp out oscillations in springs.
The promise of nanotechnology December 4th, 2013
No need to be so gloomy about graphene December 4th, 2013
Curing Cancer with Magnetic Nanoparticles December 4th, 2013
Turning waste into power with bacteria — and loofahs December 4th, 2013
Agilent Technologies Introduces Next-Generation Atomic Force Microscope December 3rd, 2013
Agilent Technologies’ Award-Winning, Ultrafast Express Test Now Compatible with All G200 Stages and DCM II, XP Heads December 3rd, 2013
AXT Appointed Exclusive Distributor for Fischione Instruments November 29th, 2013
New Malvern data demonstrate monoclonal antibody characterization using the Viscotek SEC-MALS 20 November 27th, 2013