Shuxiang Dong from Knoxville, TN, age 66

Us Patents

Method And Apparatus For High Voltage Gain Using A Magnetostrictive-Piezoelectric Composite
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US Patent:

7256532, Aug 14, 2007
Filed:

Mar 8, 2005
Appl. No.:

11/073763
Inventors:

Dwight Douglas Viehland - Blacksburg VA, US
Shuxiang Dong - Blacksburg VA, US
Jiefang Li - Blacksburg VA, US
Assignee:

Virginia Tech Intellectual Properties, Inc. - Blacksburg VA
International Classification:

H01L 41/08
US Classification:

310358
Abstract:

A method and apparatus attains high voltage gain by using a composite structure of an elastic section of piezoelectric layers bonded between magnetic and electric sections of magnetostrictive layers, with a harmonic magnetic field being applied along the layers at a mechanical resonance frequency of the composite structure, through coils around the laminate carrying current, such as to produce a continuity of both magnetic and electric flux lines, and achieving a high voltage output.

Piezoelectric Motor And Method Of Exciting An Ultrasonic Traveling Wave To Drive The Motor
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US Patent:

7307372, Dec 11, 2007
Filed:

Jun 29, 2006
Appl. No.:

11/477306
Inventors:

Kenji Uchino - State College PA, US
Shuxiang Dong - Blacksburg VA, US
Michael T. Strauss - Newburyport MA, US
Assignee:

The Penn State Research Foundation - University Park PA
International Classification:

H01L 41/04
H02N 2/00
H02N 2/02
US Classification:

310333, 31032304
Abstract:

A rotary ultrasonic piezoelectric motor is provided and a method of exciting a flexure traveling wave to drive the motor. The motor includes a stator having a piezoelectric ceramic disc polarized in the radial direction and bounded by a top electrode and a segmented bottom electrode. The motor also includes a power source for applying two pairs of alternating voltages to the bottom electrode segments to excite a shear-shear mode vibration in the stator, resulting in a shear-shear mode flexure traveling wave in the stator. The motor further includes a rotor operatively connected to the stator, and the stator is driven to rotate through a frictional force between the rotor and the stator due to the traveling wave deformation of the stator. A linear ultrasonic piezoelectric motor and method of exciting a flexure traveling wave to linearly drive the motor is provided. The motor includes a stator having a rectangular piezoelectric ceramic plate that is polarized in the longitudinal direction.

Method And Apparatus For High-Permeability Magnetostrictive/Piezo-Fiber Laminates Having Colossal, Near-Ideal Magnetoelectricity
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US Patent:

7771846, Aug 10, 2010
Filed:

Aug 1, 2007
Appl. No.:

11/832564
Inventors:

Dwight Viehland - Blacksburg VA, US
Shuxiang Dong - Blacksburg VA, US
Junyi Zhai - Blacksburg VA, US
Assignee:

Virginia Tech Intellectual Properties, Inc. - Blacksburg VA
International Classification:

B32B 15/04
US Classification:

4286931
Abstract:

An ME composite laminate of at least one (1-3) piezo-fiber layer coupled with high-permeability alloy magnetostrictive layers, optionally formed of FeBSiC or equivalent. The composite laminate alternates the (1-3) piezo-fiber and high-permeability alloy magnetostrictive layers in a stacked manner. Optionally, the magnetization direction of the high-permeability alloy magnetostrictive layers and polarization direction of the piezo-fiber layer are an (L-L) arrangement. Optionally, thin film polymer layers are between the (1-3) piezo-fiber layer and high-permeability alloy magnetostrictive layers. Optionally, piezo-electric fibers within the (1-3) piezo-fiber layer are poled by inter-digitated electrodes supported by the thin film polymer, arranged as alternating symmetric longitudinally-poled “push-pull” units.

Piezoelectric Motor And Method Of Exciting An Ultrasonic Traveling Wave To Drive The Motor
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US Patent:

20050001516, Jan 6, 2005
Filed:

May 26, 2004
Appl. No.:

10/855260
Inventors:

Kenji Uchino - State College PA, US
Shuxiang Dong - Blacksburg VA, US
Michael Strauss - Newburyport MA, US
International Classification:

H01L041/09
US Classification:

310333000
Abstract:

A rotary ultrasonic piezoelectric motor is provided and a method of exciting a flexure traveling wave to drive the motor. The motor includes a stator having a piezoelectric ceramic disc polarized in the radial direction and bounded by a top electrode and a segmented bottom electrode. The motor also includes a power source for applying two pairs of alternating voltages to the bottom electrode segments to excite a shear-shear mode vibration in the stator, resulting in a shear-shear mode flexure traveling wave in the stator. The motor further includes a rotor operatively connected to the stator, and the stator is driven to rotate through a frictional force between the rotor and the stator due to the traveling wave deformation of the stator. A linear ultrasonic piezoelectric motor and method of exciting a flexure traveling wave to linearly drive the motor is provided. The motor includes a stator having a rectangular piezoelectric ceramic plate that is polarized in the longitudinal direction. The motor also includes a power source for applying two pairs of alternating voltages to the bottom electrode segments to excite a shear-shear mode vibration in the stator, resulting in a shear-shear mode flexure traveling wave in the stator. The motor further includes a slider operatively connected to the stator, and the stator is driven to move linearly through a frictional force between the slider and the stator due to the traveling wave deformation of the stator.