International Business Machines Corporation

Ying He

Ning Li

Qing Cao

Jianshi Tang

Jeehwan Kim

Hariklia Deligianni

Roy Rongqing Yu

Damon B Farmer

Emily R Kinser

Yu Luo

Cristina Camagong

Andrei Fustochenko

Chemical sensors and methods of forming and making the same include an input terminal and an output terminal. A negative capacitance structure is configured to control a current passing horizontally from the input terminal to the output terminal, and has a first and second metal layer that are arranged vertically with respect to one another, and a ferroelectric layer positioned between the first and second metal layers. An electrode is in electrical contact with the negative capacitance structure, and is configured to change potential, to exceed a threshold, thereby triggering a discontinuous polarization change in the negative capacitance structure.

Sensors based on negative capacitance field effect transistors

A method for forming a nanostructure includes coating an exposed surface of a base layer with a patterning layer. The method further includes forming a pattern in the patterning layer including nano-patterned non-random openings, such that a bottom portion of the non-random openings provides direct access to the exposed surface of the base layer. The method also includes depositing a material in the non-random openings in the patterning layer, such that the material contacts the exposed surface to produce repeating individually articulated nano-scale features. The method includes removing remaining portions of the patterning layer. The method further includes forming an encapsulation layer on exposed surfaces of the repeating individually articulated nanoscale features and the exposed surface of the base layer.

Nanostructure featuring nano-topography with optimized electrical and biochemical properties

Chemical sensors include a functionalized electrode configured to change surface potential in the presence of an analyte. A piezoelectric element is connected to the functionalized electrode. A piezoresistive element is in contact with the piezoelectric element.

Ultrasensitive sensor based on a piezoelectric transistor

Methods of using and making chemical sensors include exposing a functionalized electrode to a substance to be tested. The functionalized electrode is electrically connected to a sensor having a piezoelectric element and a piezoresistive element. A voltage on the functionalized electrode controls a resistance of the piezoresistive element. A current is measured passing through the piezoresistive element. The presence of the analyte is determined based on the measured current.

Chemical sensors and methods of forming and making the same include a semiconductor substrate having an input terminal and an output terminal. A negative capacitance structure is positioned on the semiconductor substrate and is configured to control a current passing from the input terminal to the output terminal. A functionalized electrode is in electrical contact with the negative capacitance structure and is configured to change surface potential in the presence of an analyte, such that a phase change in the negative capacitance structure is triggered when the surface potential exceeds a threshold.

Chemical sensors and methods of using and making the same include a functionalized electrode configured to change surface potential in the presence of an analyte. A piezoelectric element is connected to the functionalized electrode and is configured to change in volume in accordance with the surface potential of the functionalized electrode. A piezoresistive element is in contact with the piezoelectric element and is configured to change in resistance in accordance with the volume of the piezoelectric element.

The present disclosure provides a method of forming a biocompatible structure that includes forming biodissolvable substrate comprising a flexible network of peptides, and a biocompatible structure having a biodissolvable substrate and, optionally, an electronic device on a surface thereof for use in implantable electronics.

Biocompatible devices with dissolvable substrates and methods of forming the same

A method includes embedding high-z oxide nanoparticles in a semiconductor package of a semiconductor packaged assembly, wherein the high-z nanoparticles are operative to emit electron radiation when exposed to a radiation source to render a semiconductor device in the semiconductor package inoperable.

Growing community of inventors

Yorktown Heights, NY, United States of America

Ying He