公开(公告)号：US10676862B2

公开(公告)日：2020-06-09

申请号：US16401433

申请日：2019-05-02

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Abram L. Falk ,  Shu-Jen Han ,  Bharat Kumar

IPC: H01L51/00 ,  D06M11/73 ,  B32B5/02 ,  B32B5/26 ,  B32B5/06 ,  D06M11/83 ,  H01G11/36 ,  D06M11/74 ,  D06M23/08 ,  D06M101/06 ,  D06M101/34 ,  H01L51/44 ,  H01L51/05 ,  H01L51/10 ,  D06M101/12 ,  D06M101/32 ,  D06M101/40

Abstract: A textile article includes a first fabric including a plurality of first carbon nanotubes coupled to the first fabric. The first carbon nanotubes of the plurality of first carbon nanotubes are metallic carbon nanotubes. A second fabric includes a plurality of second carbon nanotubes coupled to the second fabric. The second carbon nanotubes of the plurality of second carbon nanotubes are semiconductive carbon nanotubes. The first fabric is interconnected with the second fabric.

公开(公告)号：US10546303B2

公开(公告)日：2020-01-28

申请号：US15465297

申请日：2017-03-21

Applicant: International Business Machines Corporation

Inventor： Ali Afzali-Ardakani ,  Shu-Jen Han

IPC: G06Q30/00

Abstract: A unique ID using optically visible carbon nanotubes with nanocrystal decoration is provided. In one aspect, a method for creating a unique ID includes: providing a substrate having an array of trenches; randomly placing carbon nanotubes throughout the array such that each trench either contains a carbon nanotube or does not, wherein the random placement of the carbon nanotubes throughout the array of trenches includes code information that forms the unique ID; and coating the carbon nanotubes with optically visible nanocrystals. A unique ID and authentication method using the unique ID are also provided.

公开(公告)号：US10453527B1

公开(公告)日：2019-10-22

申请号：US16352230

申请日：2019-03-13

Applicant: International Business Machines Corporation

Inventor： Seyoung Kim ,  Hyung-Min Lee ,  Tayfun Gokmen ,  Shu-Jen Han

IPC: G11C13/00 ,  G06N3/063 ,  G06N3/08

Abstract: A resistive processing unit (RPU) device includes a weight storage device to store a weight voltage which corresponds to a weight value of the RPU device, and a read transistor having a gate connected to the weight storage device, and first and second source/drain terminals connected to first and second control ports, respectively. A current source connected to the second source/drain terminal generates a fixed reference current. The read transistor generates a weight current in response to the weight voltage. A read current output from the second control port represents a signed weight value of the RPU device. A magnitude of the read current is equal to a difference between the weight current and the fixed reference current. The sign of the read current is positive when the weight current is greater than the fixed reference current, and negative when the weight current is less than the fixed reference current.

公开(公告)号：US10370790B2

公开(公告)日：2019-08-06

申请号：US15496486

申请日：2017-04-25

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Abram L. Falk ,  Shu-Jen Han ,  Bharat Kumar

IPC: D03D15/00 ,  D06M11/73 ,  B32B5/02 ,  B32B5/26 ,  B32B5/06 ,  D06M11/83 ,  H01L51/00 ,  H01G11/36 ,  D06M101/06 ,  D06M101/34 ,  D06M101/40 ,  H01L51/44 ,  H01L51/05 ,  H01L51/10

Abstract: A textile article includes a first fabric including a plurality of first carbon nanotubes coupled to the first fabric. The first carbon nanotubes of the plurality of first carbon nanotubes are metallic carbon nanotubes. A second fabric includes a plurality of second carbon nanotubes coupled to the second fabric. The second carbon nanotubes of the plurality of second carbon nanotubes are semiconductive carbon nanotubes. The first fabric is interconnected with the second fabric.

公开(公告)号：US10367158B2

公开(公告)日：2019-07-30

申请号：US15207938

申请日：2016-07-12

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Shu-Jen Han ,  Jianshi Tang

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

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：US10340459B2

公开(公告)日：2019-07-02

申请号：US15077025

申请日：2016-03-22

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Abram L. Falk ,  Damon B. Farmer ,  Shu-Jen Han

IPC: C01B32/17 ,  H01L27/30 ,  H01L51/00 ,  H01L51/44 ,  C01B32/168 ,  C01B32/176

Abstract: Detectors and methods of forming the same include aligning a semiconducting carbon nanotubes on a substrate in parallel to form a nanotube layer. The aligned semiconducting carbon nanotubes in the nanotube layer are cut to a uniform length corresponding to a detection frequency. Metal contacts are formed at opposite ends of the nanotube layer.

公开(公告)号：US10333088B1

公开(公告)日：2019-06-25

申请号：US15838487

申请日：2017-12-12

Applicant: International Business Machines Corporation

Inventor： Damon Brooks Farmer ,  Shu-Jen Han ,  Jianshi Tang

IPC: H01L29/08 ,  H01L51/05 ,  C01B32/168 ,  H01L51/00 ,  H01L21/04 ,  H01L21/20 ,  H01L27/28

Abstract: The subject embodiments relate to carbon nanotube (CNT) transistors with carrier blocking using thin dielectric under the drain or source and drain contacts. According to an embodiment, a transistor is provided that comprises a CNT channel layer, a metal source contact formed on the carbon nanotube channel layer, and a metal drain contact formed on the carbon nanotube channel layer. The transistor structure further comprises a drain dielectric layer formed adjacent to and between a lower surface of the metal drain contact and an upper surface of the carbon nanotube channel layer. In one or more implementations, the drain dielectric layer comprises a material that suppresses injection of a first type of carrier into the CNT channel layer and facilitates the injection of a second type of carrier into the CNT channel layer.

公开(公告)号：US20190137879A1

公开(公告)日：2019-05-09

申请号：US15802584

申请日：2017-11-03

Applicant: International Business Machines Corporation

Inventor： Shu-Jen Han ,  Brian Lin ,  Hareem T. Maune ,  Charles T. Rettner ,  Linda K. Sundberg ,  Leslie E. Thompson ,  Hoa D. Truong ,  Willi Volksen

IPC: G03F7/11 ,  G03F7/16 ,  G03F7/20 ,  H01L51/00

Abstract: A crosslinked self-assembled monolayer (SAM), comprising surface groups containing a nitrogen-heterocycle, was formed on an oxygen plasma-treated silicon oxide or hafnium oxide top surface of a substrate. The SAM is covalently bound to the underlying oxide layer. The SAM was patterned by direct write methods using ultraviolet (UV) light of wavelength 193 nm or an electron beam, forming a line-space pattern comprising non-exposed SAM features. The non-exposed SAM features non-covalently bound DNA-wrapped carbon nanotubes (DNA-CNT) deposited from aqueous solution with a selective placement efficiency of about 90%. Good alignment of carbon nanotubes to the long axis of the SAM features was also observed. The resulting patterned biopolymer features were used to prepare a CNT based field effect transistor.

公开(公告)号：US10276626B2

公开(公告)日：2019-04-30

申请号：US15857086

申请日：2017-12-28

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Qing Cao ,  Shu-Jen Han

IPC: H01L27/146 ,  H01L31/032 ,  H01L31/0296

Abstract: A three-dimensional multispectral imaging sensor and method for forming a three-dimensional multispectral imaging sensor are provided. The three-dimensional multispectral imaging sensor includes a monolithic structure having a plurality of layers. Each of the layers is formed from light detecting materials for detecting light of respective different non-overlapping wavelengths and having respective different bandgaps.

公开(公告)号：US10209186B2

公开(公告)日：2019-02-19

申请号：US15396902

申请日：2017-01-03

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Ali Afzali-Ardakani ,  Abram L. Falk ,  Damon B. Farmer ,  Shu-Jen Han ,  George S. Tulevski

IPC: G01N21/55 ,  G01N21/552

Abstract: A chemical sensor, methods of forming the same, and methods of performing chemical detection include a carbon nanotube test surface. A detector is configured to receive a signal from the carbon nanotube test surface responsive to illumination on the nanotube test surface. A matching module is configured to determine whether a chemical is present at the carbon nanotube test surface based on a comparison between the signal and a spectral profile of the chemical.