Sunday, July 11, 2010

US Patent 7751171 - Nanoscale grasping device

Nanotweezers were developed over 10 years ago using dual carbon nanotubes to grasp matter on the nanoscale. This patent from NanoLab, Inc. teaches an improved version of nanotweezers using 3 nanotubes controled by an ac driving voltage to improve stability of control. Claim 1 reads:

1. A nanoscale grasping device for the manipulation of microscopic objects, comprising

at least three electrostatically actuated grasping elements;

wherein each of said at least three grasping elements is independently supplied with a voltage sufficient to induce electrostatic forces between at least two of said grasping elements, whereby to close or open said grasping elements; and

wherein an oscillating voltage is applied to at least one of said grasping elements.