YU J CHEN
Nail Technician in Boston, MA

2014003, Jan 30, 2014

Apr 30, 2012

13/460116

Yu Chen - Boston MA, US
Xihua Wang - Allston MA, US
Agniezska Kalinowski - Pittsburgh PA, US
Mi Hong - Quincy MA, US
Pritiraj Mohanty - Boston MA, US
Shyamsunder Erramilli - Quincy MA, US

G01N 27/12

435 12, 422 69, 435 14, 4352871, 436501

A sensor system for detecting a chemical or biological species includes a sensing element and a bias and measurement circuit. The sensing element includes nanochannels having an outer surface functionalized for interaction with the species to create a surface potential, and each having a sufficiently small cross section to exhibit a shift of differential conductance into a negative bias operating region by a shift amount dependent on the surface potential. The bias and measurement circuit applies a bias voltage across two ends of the nanochannels sufficiently negative to achieve a desired dependence of the differential conductance on the surface potential. The dependence has a steeply sloped region of high amplification substantially greater than a reference amplification at a zero-bias condition, thus achieving relatively high signal-to-noise ratio. The bias and measurement circuit converts the measured differential conductance into a signal indicative of presence or activity of the species.

2010003, Feb 18, 2010

May 12, 2009

12/464665

Yu Chen - Boston MA, US
Xihua Wang - Allston MA, US
Agniezska Kalinowski - Pittsburgh PA, US
Mi Hong - Quincy MA, US
Pritiraj Mohanty - Los Angeles CA, US
Shyamsunder Erramilli - Quincy MA, US

Trustees of Boston University - Boston MA

G01N 27/04, G01R 27/08

324693, 977957

A sensor system for detecting a chemical or biological species includes a sensing element and a bias and measurement circuit. The sensing element includes nanochannels, each having an outer surface functionalized to chemically interact with the species to create a corresponding surface potential, and each having a sufficiently small cross section to exhibit a shift of a differential conductance characteristic into a negative bias operating region by a shift amount dependent on the surface potential. The bias and measurement circuit applies a bias voltage across two ends of the nanochannels sufficiently negative to achieve a desired dependence of the differential conductance on the surface potential, wherein the dependence has a steeply sloped region of high amplification substantially greater than a reference amplification at a zero-bias condition, thus achieving relatively high signal-to-noise ratio. The bias and measurement circuit converts the measured differential conductance into a signal indicative of presence or activity of the species of interest.

2004001, Jan 22, 2004

Apr 24, 2003

10/249624

Peter Kazlas - Sudbury MA, US
Karl Amundson - Cambridge MA, US
Yu Chen - Allston MA, US
Guy Danner - Somerville MA, US
Kevin Denis - Beverly Farms MA, US
Gregg Duthaler - Needham MA, US
Nathan Kane - Arlington MA, US
Andrew Ritenour - Medford MA, US

E INK CORPORATION - Cambridge MA

H01L021/8238

438/200000

A non-linear element is formed on a flexible substrate by securing the substrate to a rigid carrier, forming the non-linear element, and then separating the flexible substrate from the carrier. The process allows flexible substrates to be processed in a conventional fab intended to process rigid substrates. In a second method, a transistor is formed on a insulating substrate by forming gate electrodes, depositing a dielectric layer, a semiconductor layer and a conductive layer, patterning the conductive layer to form source, drain and pixel electrodes, covering the channel region of the resultant transistor with an etch-resistant material and etching using the etch-resistant material and the conductive layer as a mask, the etching extending substantially through the semiconductor layer between adjacent transistors. The invention also provides a process for forming a diode on a substrate by depositing on the substrate a first conductive layer, and a second patterned conductive layer and a patterned dielectric layer over parts of the first conductive layer, and etching the first conductive layer using the second conductive layer and dielectric layer as an etch mask. Finally, the invention provides a process for driving an impulse-sensitive electro-optic display.

7116318, Oct 3, 2006

Apr 24, 2003

10/249618

Karl R. Amundson - Cambridge MA, US
Yu Chen - Allston MA, US
Kevin L. Denis - Beverly Farms MA, US
Paul S. Drzaic - Morgan Hill CA, US
Peter T. Kazlas - Sudbury MA, US
Andrew P. Ritenour - Medford MA, US

E Ink Corporation - Cambridge MA

G09G 5/00

345204, 345205, 345210, 345214

A display pixel unit provides reduced capacitative coupling between a pixel electrode and a source line. The unit includes a transistor, the pixel electrode, and the source line. The source line includes an extension that provides a source for the transistor. A patterned conductive portion is disposed adjacent to the source line.

2011002, Jan 27, 2011

Sep 30, 2010

12/894792

Pritiraj Mohanty - Boston MA, US
Shyamsunder Erramilli - Quincy MA, US
Xihua Wang - Allston MA, US
Yu Chen - Boston MA, US

TRUSTEES OF BOSTON UNIVERSITY - Boston MA

A61B 5/1468, G01N 27/26

600345, 20440301

A glucose sensor employs a programmable glucose sensor array of a relatively large number of nanoelectronic devices (e.g. semiconductor field-effect devices) having control surfaces functionalized with a glucose-reactive substance and generating sensing signals indicative of sensed glucose level of a bodily fluid. The devices are divided into sub-sets sequentially enabled over successive intervals to achieve overall sensor lifetime many times longer than the lifetime of any single device in operation.