Yu Liu

US Patent:

20130209991, Aug 15, 2013

Filed:

Jan 10, 2013

Appl. No.:

13/738658

Inventors:

Northeastern University - , US
Yu Liu - Boston MA, US
Mehmet Remzi Dokmeci - Brookline MA, US

Assignee:

Northeastern University - Boston MA

International Classification:

G01N 27/02
A61B 5/1473
H01L 21/02

US Classification:

435 5, 422 8201, 422 8202, 422430, 436501, 435 71, 4352873, 438 49, 600345

Abstract:

Sensors based on single-walled carbon nanotubes (SWNT) are integrated into a microfluidic system outfitted with data processing and wireless transmission capability. The sensors combine the sensitivity, specificity, and miniature size of SWNT-based nanosensors with the flexible fluid handling power of microfluidic “lab on a chip” analytical systems. Methods of integrating the SWNT-based sensor into a microfluidic system are compatible with the delicate nature of the SWNT sensor elements. The sensor devices are capable of continuously and autonomously monitoring and analyzing liquid samples in remote locations, and are applicable to real time water quality monitoring and monitoring of fluids in living systems and environments. The sensor devices and fabrication methods of the invention constitute a platform technology, because the devices can be designed to specifically detect a large number of distinct chemical agents based on the functionalization of the SWNT. The sensors can be combined into a multiplex format that detects desired combinations of chemical agents simultaneously.

US Patent:

20160129455, May 12, 2016

Filed:

Dec 18, 2015

Appl. No.:

14/974517

Inventors:

- Boston MA, US
Yu Liu - Boston MA, US
Mehmet Remzi Dokmeci - Brookline MA, US

International Classification:

B03C 5/00
G01N 33/18
G01N 27/07

Abstract:

Sensors based on single-walled carbon nanotubes (SWNT) are integrated into a microfluidic system outfitted with data processing and wireless transmission capability. The sensors combine the sensitivity, specificity, and miniature size of SWNT-based nanosensors with the flexible fluid handling power of microfluidic “lab on a chip” analytical systems. Methods of integrating the SWNT-based sensor into a microfluidic system are compatible with the delicate nature of the SWNT sensor elements. The sensor devices are capable of continuously and autonomously monitoring and analyzing liquid samples in remote locations, and are applicable to real time water quality monitoring and monitoring of fluids in living systems and environments. The sensor devices and fabrication methods of the invention constitute a platform technology, because the devices can be designed to specifically detect a large number of distinct chemical agents based on the functionalization of the SWNT. The sensors can be combined into a multiplex format that detects desired combinations of chemical agents simultaneously.

US Patent:

20150325410, Nov 12, 2015

Filed:

May 9, 2014

Appl. No.:

14/274018

Inventors:

- Gloucester MA, US
Daniel Distaso - Merrimac MA, US
Nini Munoz - Ithaca NY, US
Tristan Ma - Lexington MA, US
Yu Liu - Rockport MA, US

Assignee:

Varian Semiconductor Equipment Associates, Inc. - Gloucester MA

International Classification:

H01J 37/32
C23C 14/54
C23C 14/34
H01L 43/12

Abstract:

In one embodiment a method of etching a substrate includes directing a first ion beam to the substrate through an extraction plate of a processing apparatus using a first set of control settings of the processing apparatus. The method may further include detecting a signal from the substrate that indicates a change in material being etched by the first ion beam from a first material to a second material, adjusting control settings of the processing apparatus to a second set of control settings different from the first set of control settings based on the second material, and directing a second ion beam to the substrate through the extraction plate using the second set of control settings.

US Patent:

20150272443, Oct 1, 2015

Filed:

Mar 25, 2015

Appl. No.:

14/668574

Inventors:

- St. Paul MN, US
Joseph M. Schmitt - Andover MA, US
Yu Liu - Irvine CA, US

International Classification:

A61B 5/00
A61B 5/02

Abstract:

A single optical fiber force-sensing assembly includes a catheter configured to detect both axial and bending tip displacement. The catheter includes a flexible structure located adjacent to a distal tip portion of the catheter. The single optical fiber within the catheter defines a first reflective surface. A second reflective surface is located closely adjacent to the first reflective surface.

US Patent:

20140297473, Oct 2, 2014

Filed:

Mar 28, 2014

Appl. No.:

14/229600

Inventors:

- Reno NV, US
MARTIN C. EITREIM - SEATTLE WA, US
SHYAM S. SUNDARAMURTHY - SEATTLE WA, US
JIAHU DENG - SEATTLE WA, US
YU LIU - SAMMAMISH WA, US
RONALD G. SIEMENS - SEATTLE WA, US
KYLE ROBERT STANLEY - SEATTLE WA, US

Assignee:

AMAZON TECHNOLOGIES, INC. - Reno NV

International Classification:

G06Q 30/06

US Classification:

705 2661

Abstract:

Embodiments of a system and method for evaluating correction submissions with supporting evidence may include, subsequent to a submitter being provided with item description information for an item offered for sale, receiving a correction submission specified by the submitter. The correction submission may specify a proposed modification to an attribute(s) in the item description information. Embodiments may include generating a measure of risk associated with performing the proposed modification to the item description information. Embodiments may also include, based on an evaluation of the measure of risk and one or more risk criteria, generating an indication that specifies whether the proposed modification to the item description information is permitted to be performed. Embodiments may also include receiving information for confirming the validity of the correction submission, which may include an image (e.g., a product image), or a network address (e.g., a URL to manufacturers website), or other information described herein.