Sung W Oh

US Patent:

6584856, Jul 1, 2003

Filed:

Aug 30, 2000

Appl. No.:

09/651806

Inventors:

William J. Biter - Kennett Square PA 19348
Sung J. Oh - Chester Springs PA 19425
Stephen M. Hess - West Chester PA 19382

International Classification:

G01B 716

US Classification:

73768, 73862335

Abstract:

A method of sensing strain in a material includes the steps of embedding in a material at least one wire formed of a conductive core and a magnetoelastic film coated around the conductive core and having a known level of saturation, interconnecting an input lead to one end portion of the wire and an output lead to another end portion of the wire, inputting an electrical current in the wire through the input lead so as to drive the magnetoelastic film of the wire to saturation such that the electrical impedance is sensitive to changes in strain in the material, and outputting an electrical signal from the output lead being proportional to a strain imposed on the material surrounding the wire.

US Patent:

6899170, May 31, 2005

Filed:

Nov 15, 2001

Appl. No.:

09/991002

Inventors:

William J. Biter - Kennett Square PA, US
Sung J. Oh - Chester Springs PA, US
Stephen M. Hess - West Chester PA, US

International Classification:

F28F027/00
F28F013/18
F28F013/16

US Classification:

165277, 165 41, 165 96, 165133, 165135, 244148 R

Abstract:

A thermal control device for controlling the temperature of a craft/spacecraft is an electrostatic switch causing a large change in apparent emissivity. A flexible covering has a high emissivity and makes close contact with the surface of the spacecraft when electrostatically attracted thereto, when the covering is out of contact, the spacecraft surface emissivity controls radiation. The device can operate with moderate levels of DC voltages. Application of voltage results in high emissivity while removal of voltage allows a separator to move the covering out of contact and thus results in low emissivity.

US Patent:

6912911, Jul 5, 2005

Filed:

Apr 30, 2002

Appl. No.:

10/137571

Inventors:

Sung J. Oh - Chester Springs PA, US
William J. Biter - Kennett Sq. PA, US
Stephen M Hess - West Chester PA, US

International Classification:

G01L001/00

US Classification:

73779, 73760

Abstract:

An improved method of sensing strain allows measurements of stress, torque, vibration and other loads imposed on a body without physical contact between the body/sensor and the monitoring equipment. An induction loop is at least partially comprised of a magnetostrictive material with a non-linear current-voltage relationship. An excitation device such as a coil is used to induce an AC response in the sensor. The non-linear response to the induced current is received by a sensing device such as a sensing coil, and the output thereof is filtered. The excitation device and sensing device are located in operative proximity to the sensor, but need not be in contact therewith, allowing easy measurement in small spaces, under harsh conditions, or of moving bodies such as drive shafts. The non-linear response of the sensor induces easily detectable harmonics of the base frequency of excitation. These harmonics may advantageously be measured as well.

US Patent:

20190292580, Sep 26, 2019

Filed:

Mar 22, 2019

Appl. No.:

16/361794

Inventors:

- New Brunswick NJ, US
Sung Won Oh - Cherry Hill NJ, US
Adriana Rosa Pereira - Riverside NJ, US

Assignee:

Rutgers, The State University of New Jersey - New Brunswick NJ

International Classification:

C12Q 1/682
C12Q 1/6823
C12Q 1/6825

Abstract:

Provided are nucleic acid-based sensors, kits that include such sensors, and methods for making and using such sensors. The sensors permit detection of a broad array of target agents, such as nucleic acids (e.g., DNA and RNA), proteins, cells, and small molecules (e.g., toxins and metals). In some examples, the sensors determine the activity of a protein, such as an enzyme's activity. The assays provide easy-to-read signals for point-of-care diagnosis. The sensors control the conformational switch for recognizing targets and to trigger the subsequent assembly of enzyme/cofactor structures for producing and amplifying signals.