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US006803840B2
(12) United States Patent ao) Patent No.: us 6,803,840 B2
Hunt et al. (45) Date of Patent: Oct. 12,2004
(21) Appl. No.: 10/113,247
(22) Filed: Apr. 1, 2002
(65) Prior Publication Data
US 2002/0167374 Al Nov. 14, 2002
Related U.S. Application Data
(60) Provisional application No. 60/280,579, filed on Mar. 30, 2001, and provisional application No. 60/280,591, filed on Mar. 30, 2001.
(51) Int. CI.7 H03H 9/24; H03H 9/46;
D01F 9/12
(52) U.S. CI 333/186; 333/197; 423/447.3;
310/36; 310/37; 205/766; 205/768
(58) Field of Search 333/186, 197;
423/447.3; 310/36, 37; 205/766, 768
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A tunable nanomechanical oscillator device and system is provided. The nanomechanical oscillator device comprising at least one nanoresonator, such as a suspended nanotube, designed such that injecting charge density into the tube (e.g. by applying a capacitively-cuopled voltage bias) changes the resonant frequency of the nanotube, and where exposing the resonator to an RF bias induces oscillitory movement in the suspended portion of the nanotube, forming a nanoscale resonator, as well as a force sensor when operated in an inverse mode. A method of producing an oriented nanoscale resonator structure with integrated electrodes is also provided.
41 Claims, 11 Drawing Sheets
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