Measuring and testing – Dynamometers – Responsive to force
Reexamination Certificate
2008-07-29
2008-07-29
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Dynamometers
Responsive to force
C073S862625, C073S862636, C073S862622, C073S514350, C977S724000, C977S953000, C977S956000
Reexamination Certificate
active
10591879
ABSTRACT:
The resolution and the signal-to-noise ration of known force sensors as e.g. capacitive force sensors decrease when scaling them down. To solve this problem there is a solution presented by the usage of a nanostructure as e.g. a carbon nanotube, which is mechanically deformed by a force to be measured. The proposed force sensors comprises a support with two arms carrying the carbon nanotube. The main advantage of this nanoscale force sensor is a very high sensitivity as the conductance of carbon nanotubes changes several orders of magnitude when a mechanical deformation arises.
REFERENCES:
patent: 2002/0167374 (2002-11-01), Hunt et al.
J. Chung, J. Lee. “Nanoscale gap fabrication and integration of carbon nanotubes by micromachining.” Sensors and Actuators A. 104 (2003) pp. 229-235.
A. Husain, J. Hone, Henk W. Ch. Postma, X. M. Huang, T. Drake, M. Barbic, A. Scherer, and M.L. Roukes. “Nanowire-based very-high-frequency electromechanical resonator.” Applied Physics Letters. V. 83, No. 6 (2003) pp. 1240-1242.
Minot et al. (E.D. Minot, Y. Yuaish, V. Sazonova, J-Y. Park, M. Brink, P. L. McEuen. “Tuning Carbon Nanotube Band Gaps with Strain.” Phys. Rev. Lett. 90 156401 (2003) pp. 1-4).
Tombler et al.: “Reversible electromechanical characteristics of carbon nanotubes under local-probe manipulation”, Nature, Jun. 15, 2000.
Husain et al.: “Nanowire-based very-high-frequency electromechanical resonator”, Applied Physics letters, Aug. 11, 2003.
Toriyama Toshiyuki et al.: “Piezoresistance measurement on single crystal silicon nanowires”, Journal of Applied Physics, Jan. 1, 2003.
Hierold Christofer
Jungen Alain
Stampfer Christoph
ETH Zurich
Greenberg Laurence A.
Lefkowitz Edward
Locher Ralph E.
Patel Punam
LandOfFree
Force sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Force sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Force sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3959227