Xing Cheng

US Patent:

7169251, Jan 30, 2007

Filed:

May 13, 2003

Appl. No.:

10/436657

Inventors:

Lingjie J Guo - Ann Arbor MI, US
Xing Cheng - Ann Arbor MI, US

Assignee:

The Regents of the University of Michigan - Ann Harbor MI

International Classification:

B82B 3/00
B82B 1/00
B37B 37/02

US Classification:

156292, 156237, 156247, 977780, 977840, 977882

Abstract:

A method of forming nanofluidic enclosed channels includes providing a first substrate having a layer of a first material disposed thereon. A plurality of nanoscale slots is formed along a second substrate using nanolithography, etching, or other disclosed techniques. The first substrate is then bonded to the second substrate such that the layer of the first material on the first substrate is adjacent the plurality of slots on the second substrate to define a plurality of enclosed nanofluidic channels therethrough.

US Patent:

7374864, May 20, 2008

Filed:

Feb 13, 2004

Appl. No.:

10/545456

Inventors:

Lingjie J. Guo - Ann Arbor MI, US
Xing Cheng - Ann Arbor MI, US

Assignee:

The Regents of the University of Michigan - Ann Arbor MI

International Classification:

G03C 5/00

US Classification:

430302, 430325, 430327, 430330, 264494, 264496

Abstract:

A method of fabricating a device including imprinting a mold having a protrusion against a substrate having a resist layer such that the protrusion engages the resist layer. The mold further has a mask member positioned generally adjacent the resist layer. Radiation energy is then transmitted through the mold and into the resist layer; however, the mask member substantially prevents transmission of the radiation energy therethrough, thereby defining an unexposed area in the resist layer. Once the mold is removed from the substrate, which consequently forms a first feature from nanoimprinting, the unexposed area of resist layer is removed through dissolving in a developer solution.

US Patent:

7648767, Jan 19, 2010

Filed:

Jun 1, 2005

Appl. No.:

10/598943

Inventors:

Peng Fei Fu - Midland MI, US
Lingjie Jay Guo - Ann Arbor MI, US
Xing Cheng - Ann Arbor MI, US

Assignee:

Dow Corning Corporation - Midland MI

International Classification:

B32B 17/06
C08G 59/68

US Classification:

428429, 522 31, 523109, 528 13

Abstract:

A material composition, which is used as a liquid resist, includes a first component comprising a monomer portion and at least one cationically polymerizable functional group, and a crosslinker reactive with the first component and comprising at least three cationically polymerizable functional groups. The material composition also includes a cationic photoinitiator. Upon exposure to UV light, the material composition crosslinks via cure to form a cured resist film that is the reaction product of the first component, the crosslinker, and the cationic photoinitiator. An article includes a substrate layer and a resist layer formed on the substrate layer from the material composition.

US Patent:

8197888, Jun 12, 2012

Filed:

Apr 30, 2008

Appl. No.:

12/112675

Inventors:

Hung-Jue Sue - College Station TX, US
Xing Cheng - College Station TX, US
Dazhi Sun - College Station TX, US
Huifeng Li - College Station TX, US
Chien-Chia Chu - College Station TX, US

Assignee:

The Texas A&M University System - College Station TX

International Classification:

B05D 5/12
B05D 1/32

US Classification:

427122, 427282

Abstract:

A dispersible nanocomposite comprising nanotubes associated with nanoplatelets. A method for creating an exfoliated nanotubes solution, aligning nanotubes and depositing them on a substrate or in matrix. In one embodiment, the method includes a nanocomposite of at least one nanotube electrostatically associated with at least one nanoplatelet. The nanoplatelets may be removed from the suspension by altering the ionic strength to create an exfoliated nanotube solution. The exfoliated nanotube solution for injection into microchannel templates and aligned deposition.

US Patent:

20070059497, Mar 15, 2007

Filed:

May 8, 2002

Appl. No.:

10/513704

Inventors:

Xudong Huang - Singapore, SG
Li-Rong Bao - Bridgewater NJ, US
Xing Cheng - Ann Arbor MI, US
Lingjie Guo - Ann Arbor MI, US
Stella Pang - Ann Arbor MI, US

International Classification:

B05D 5/12
B41M 5/00
B05D 3/12

US Classification:

428195100, 427058000, 427240000, 427355000

Abstract:

The present invention relates to a method for imprinting a micro-/nano-structure on a substrate, the method comprising (a) providing a mold containing a desired pattern or relief for a microstructure; (b) applying a polymer coating to the mold; and (c) transferring the polymer coating from the mold to a substrate under suitable temperature and pressure conditions to form an imprinted substrate having a desired micro-/nano-structure thereon.

US Patent:

20130026040, Jan 31, 2013

Filed:

Jul 27, 2012

Appl. No.:

13/560448

Inventors:

Xing Cheng - College Station TX, US
Kamran Entesari - College Station TX, US

Assignee:

THE TEXAS A&M UNIVERSITY SYSTEM - College Station TX

International Classification:

C25B 9/00

US Classification:

204600

Abstract:

A digital microfluidic platform utilizes dual active matrix circuitry to actuate and heat liquid droplets on a biochip. Liquid droplets are introduced into a droplet handling area of the biochip where they can be actuated by electrodes residing in pixels of an actuating active matrix array according to the electrowetting on dielectric phenomenon and heated by heating elements residing in pixels of a heating active matrix array. Pixels of the actuating active matrix array and the heating active matrix array are independently addressable such that droplets in the droplet handling area can be selectively heated and actuated according to their location. The actuating active matrix array and heating active matrix array can be formed on the same or different substrates with the droplet handling area disposed above or between the substrates.