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.
First Observation of Electronic Structure in Ag-Rh Alloy Nanoparticles Having Hydrogen Absorbing: Storage Property –Attempting to solve the mystery of why Ag-Rh alloy nanoparticles have a similar property to Pd– October 30th, 2014
Iranians Present Model to Predict Photocatalytic Process in Removal of Pollutants October 30th, 2014
Production of Biocompatible Polymers in Iran October 30th, 2014
Amorphous Coordination Polymer Particles as alternative to classical nanoplatforms for nanomedicine October 30th, 2014
A new cheap and efficient method to improve SERS, an ultra-sensitive chemical detection technique October 28th, 2014
New Compact SIMS at 61st AVS | Visit us on Booth 311 October 28th, 2014
New nanodevice to improve cancer treatment monitoring October 27th, 2014
Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014