Won K Choi

US Patent:

20120262027, Oct 18, 2012

Filed:

Apr 23, 2012

Appl. No.:

13/453780

Inventors:

Michael S. Strano - Lexington MA, US
Won J. Choi - Cambridge MA, US
Joel T. Abrahamson - Cambridge MA, US
Jae-Hee Han - Seongnam, KR

Assignee:

MASSACHUSETTS INSTITUTE OF TECHNOLOGY - Cambridge MA

International Classification:

H02N 11/00

US Classification:

310306

Abstract:

In one aspect, the present invention provides nanosized systems for generating electrical energy based on the use of a chemically reactive composition to generate a thermoelectric wave. For example, the system can include at least one nanostructure (e.g., a carbon nanotube) extending along an axial direction between a proximal end and a distal end. A chemically reactive composition is dispersed along at least a portion of the nanostructure, e.g., along its axial direction, so as to provide thermal coupling with the nanostructure. The chemical composition can undergo an exothermic chemical reaction to generate heat. The system can further include an ignition mechanism adapted to activate the chemical composition so as to generate a thermal wave that propagates along the axial direction of the nanostructure, where the thermal wave is accompanied by an electrical energy wave propagating along the axial direction.

US Patent:

20170097021, Apr 6, 2017

Filed:

Oct 10, 2016

Appl. No.:

15/289436

Inventors:

- Cambridge MA, US
Xin CHEN - Cambridge MA, US
Aaron D. MAZZEO - Duenellen NJ, US
George M. WHITESIDES - Newton MA, US
Robert F. SHEPHERD - Brooktondale NY, US
Ramses V. MARTINEZ - Somerville MA, US
Won Jae CHOI - Cambridge MA, US
Sen Wai KWOK - Watertown MA, US
Stephen A. MORIN - Lincoln NE, US
Adam STOKES - Watertown MA, US
Zhihong NIE - Cambridge MA, US

International Classification:

F15B 15/10
B25J 11/00
B25J 9/14
F15B 7/06
B25J 9/10

Abstract:

A soft robotic device includes a flexible body having a width, a length and a thickness, wherein the thickness is at least 1 mm, the flexible body having at least one channel disposed within the flexible body, the channel defined by upper, lower and side walls, wherein at least one wall is strain limiting; and a pressurizing inlet in fluid communication with the at least one channel, the at least one channel positioned and arranged such that the wall opposite the strain limiting wall preferentially expands when the soft robotic device is pressurized through the inlet.

US Patent:

20140109560, Apr 24, 2014

Filed:

Nov 21, 2011

Appl. No.:

13/885967

Inventors:

Filip Ilievski - Boston MA, US
Xin Chen - Cambridge MA, US
Aaron D. Mazzeo - Cambridge MA, US
George M. Whitesides - Cambridge MA, US
Robert F. Shepherd - Brooktondale NY, US
Ramses V. Martinez - Somerville MA, US
Won Jae Choi - Cambridge MA, US
Sen W. Kwok - Watertown MA, US
Stephen A. Morin - Arlington MA, US
Adam Stokes - Watertown MA, US
Zhihong Nie - Cambridge MA, US

Assignee:

PRESIDENT AND FELLOWS OF HARVARD COLLEGE - Cambridge MA

International Classification:

F15B 15/10
F15B 7/06
B25J 11/00

US Classification:

60327, 60484

Abstract:

A soft robotic device includes a flexible body having a width, a length and a thickness, wherein the thickness is at least 1 mm, the flexible body having at least one channel disposed within the flexible body, the channel defined by upper, lower and side walls, wherein at least one wall is strain limiting; and a pressurizing inlet in fluid communication with the at least one channel, the at least one channel positioned and arranged such that the wall opposite the strain limiting wall preferentially expands when the soft robotic device is pressurized through the inlet.