公开(公告)号：US10225082B2

公开(公告)日：2019-03-05

申请号：US15219422

申请日：2016-07-26

Applicant: International Business Machines Corporation

Inventor： Pau-Chen Cheng ,  Shu-Jen Han ,  Jianshi Tang

IPC: G06F21/00 ,  H04L9/08 ,  G06F7/58 ,  G06F21/72 ,  G09C1/00

Abstract: A random value generator is provided that comprises a carbon nanotube structure that generates a random output current in response to a voltage input. The random value generator includes a random value output circuit coupled to the carbon nanotube structure that receives the random output current from the carbon nanotube structure and generates a random output value based on the received random output current from the carbon nanotube structure.

公开(公告)号：US10090481B2

公开(公告)日：2018-10-02

申请号：US15863202

申请日：2018-01-05

Applicant: International Business Machines Corporation

Inventor： Qing Cao ,  Kangguo Cheng ,  Shu-Jen Han ,  Zhengwen Li ,  Fei Liu

IPC: H01L51/05 ,  H01L51/10 ,  H01L51/00 ,  H01L27/28

Abstract: A method of arranging at least one carbon nanotube on a semiconductor substrate includes depositing the at least one carbon nanotube on a dielectric layer of the semiconductor device. The method further includes arranging the at least one carbon nanotube on the dielectric layer in response to applying a voltage potential to an electrically conductive electrode of the semiconductor device, and applying a ground potential to an electrically conductive semiconductor layer of the semiconductor device.

公开(公告)号：US20180198082A1

公开(公告)日：2018-07-12

申请号：US15913164

申请日：2018-03-06

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Shu-Jen Han ,  Jianshi Tang

IPC: H01L51/10 ,  H01L51/05 ,  H01L51/00

CPC classification number: H01L51/105 ,  H01L51/002 ,  H01L51/0021 ,  H01L51/0023 ,  H01L51/0048 ,  H01L51/0545 ,  H01L51/0558 ,  H01L51/107 ,  H01L2251/301

Abstract: A field effect transistor includes a substrate and a gate dielectric formed on the substrate. A channel material is formed on the dielectric layer. The channel material includes carbon nanotubes. A patterned resist layer has openings formed therein. Metal contacts are formed on the channel material in the openings in the patterned resist layer and over portions of the patterned resist layer to protect sidewalls of the metal contacts to prevent degradation of the metal contacts.

公开(公告)号：US20180193663A1

公开(公告)日：2018-07-12

申请号：US15403651

申请日：2017-01-11

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Hariklia Deligianni ,  Shu-Jen Han ,  Edmund J. Sprogis

IPC: A61N5/06 ,  A61B5/04

Abstract: A neural probe is presented for local neural optogenetics stimulation and neurochemistry recordings. The neural probe includes a probe body, a shank extending from the probe body to a tip, a plurality of micro light-emitting diodes (LEDs) positioned across a length of a first surface of the shank for providing neuron-affecting light, a plurality of carbon devices, and a plurality of carbon electrodes positioned across a length of a second surface of the shank, the second surface in opposed relation to the first surface. The plurality of carbon electrodes can be vertically aligned carbon nanotubes or vertically aligned carbon nanofibers. The plurality of carbon electrodes can also be horizontally aligned carbon nanotubes. The plurality of micro LEDs activate neurons and the plurality of vertically aligned carbon electrodes electrochemically record neurotransmitters.

公开(公告)号：US20180078194A1

公开(公告)日：2018-03-22

申请号：US15616985

申请日：2017-06-08

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Shu-Jen Han

IPC: A61B5/00 ,  A61B5/04

CPC classification number: A61B5/4064 ,  A61B5/04001 ,  A61B5/14503 ,  A61B5/14539 ,  A61B5/6868 ,  A61B2560/063 ,  A61B2562/0209 ,  A61B2562/028 ,  A61B2562/0285 ,  A61B2562/166

Abstract: Embodiments include microelectrodes including a flexible shank and a bioabsorbable material surrounding the flexible shank. The flexible shank can include a flexible substrate, a circuit, and a plurality of sensors. Embodiments also include a methods of forming flexible active electrode arrays including depositing a flexible polymer on a substrate. The methods also include forming a plurality of sensors on the flexible polymer and attaching a silicon-based chip to the flexible shank. The methods also include coating the flexible shank in a bioabsorbable material and cutting the shank and a portion of the bioabsorbable material from the substrate.

公开(公告)号：US20180078193A1

公开(公告)日：2018-03-22

申请号：US15268020

申请日：2016-09-16

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Shu-Jen Han

IPC: A61B5/00 ,  A61B5/04

Abstract: Embodiments include microelectrodes including a flexible shank and a bioabsorbable material surrounding the flexible shank. The flexible shank can include a flexible substrate, a circuit, and a plurality of sensors. Embodiments also include a methods of forming flexible active electrode arrays including depositing a flexible polymer on a substrate. The methods also include forming a plurality of sensors on the flexible polymer and attaching a silicon-based chip to the flexible shank. The methods also include coating the flexible shank in a bioabsorbable material and cutting the shank and a portion of the bioabsorbable material from the substrate.

公开(公告)号：US20180078162A1

公开(公告)日：2018-03-22

申请号：US15474198

申请日：2017-03-30

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Shu-Jen Han

IPC: A61B5/04 ,  A61B5/00

Abstract: Embodiments include microelectrodes including a flexible shank and a bioabsorbable material surrounding the flexible shank. The flexible shank can include a flexible substrate, a circuit, and a plurality of sensors. Embodiments also include a methods of forming flexible active electrode arrays including depositing a flexible polymer on a substrate. The methods also include forming a plurality of sensors on the flexible polymer and attaching a silicon-based chip to the flexible shank. The methods also include coating the flexible shank in a bioabsorbable material and cutting the shank and a portion of the bioabsorbable material from the substrate.

公开(公告)号：US09874534B2

公开(公告)日：2018-01-23

申请号：US15340550

申请日：2016-11-01

Applicant: International Business Machines Corporation

Inventor： Stephen W. Bedell ,  Shu-Jen Han ,  Ning Li ,  Devendra K. Sadana

IPC: G01N27/04 ,  H01L41/18 ,  H01L27/08 ,  H01L49/02

CPC classification number: G01N27/04 ,  A61B2562/164 ,  H01L21/02524 ,  H01L24/83 ,  H01L27/0288 ,  H01L27/0802 ,  H01L28/20 ,  H01L41/18

Abstract: A material removal process referred to as spalling is used to provide flexible and stretchable sensors that can be used for healthcare monitoring, bio-medical devices, wearable electronic devices, artificial skin, large area sensing, etc. The flexible and stretchable sensors of the present application have high sensitivity that is comparable to that of a bulk silicon sensor. The flexible and stretchable sensors comprise single crystalline spring-like structures that couple various resistor structures together.

公开(公告)号：US20180013070A1

公开(公告)日：2018-01-11

申请号：US15699527

申请日：2017-09-08

Applicant: International Business Machines Corporation

Inventor： Martin M. Frank ,  Shu-Jen Han ,  George S. Tulevski

IPC: H01L51/00 ,  H01L51/10 ,  H01L51/05

CPC classification number: H01L51/0049 ,  H01L51/0048 ,  H01L51/0575 ,  H01L51/102 ,  H01L2251/301 ,  H01L2251/303 ,  Y10S977/938

Abstract: A method of making a carbon nanotube structure includes depositing a first oxide layer on a substrate and a second oxide layer on the first oxide layer; etching a trench through the second oxide layer; removing end portions of the first oxide layer and portions of the substrate beneath the end portions to form cavities in the substrate; depositing a metal in the cavities to form first body metal pads; disposing a carbon nanotube on the first body metal pads and the first oxide layer such that ends of the carbon nanotube contact each of the first body metal layers; depositing a metal to form second body metal pads on the first body metal pads at the ends of the carbon nanotube; and etching to release the carbon nanotube, first body metal pads, and second body metal pads from the substrate, first oxide layer, and second oxide layer.

公开(公告)号：US09835583B2

公开(公告)日：2017-12-05

申请号：US14695205

申请日：2015-04-24

Applicant: International Business Machines Corporation

Inventor： Shu-Jen Han ,  Keith A. Jenkins

IPC: G01N27/00 ,  G01N27/414 ,  G01N33/00

CPC classification number: G01N27/4141 ,  G01N27/4146 ,  G01N33/0075

Abstract: A method of assembling a remote sensor system to detect a gas or chemical and a remote sensor system are described. The method includes fabricating a sensor, the sensor outputting a sensor signal that changes upon contact of the sensor with the gas or chemical and the sensor having an input port for a clock signal, coupling a capacitor to the sensor, the capacitor output voltage resulting from the sensor signal output by the sensor, and coupling a mixer to the capacitor and a low frequency oscillator, the mixer configured to mix the capacitor output voltage with the low frequency oscillator output to generate an output signal. The method also includes coupling an antenna to the mixer, the antenna configured to transmit the output signal indicating detection of the gas or chemical.