公开(公告)号：US20220093810A1

公开(公告)日：2022-03-24

申请号：US17413927

申请日：2019-12-16

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Steven LUKMAN ,  Jinghua TENG ,  Qing Yang Steve WU ,  Lu DING

IPC: H01L31/032 ,  H01L31/0336 ,  H01L33/00

Abstract: A device which detects and/or emits infrared radiation in the mid-infrared to far- infrared region is disclosed herein. The device comprises a first layer comprising a first transition metal dichalcogenide, and a second layer comprising a second transition metal dichalcogenide, wherein the second layer is deposited adjacent to the first layer to form a first interface which interlayer excitons are producible from for rendering the device operable to detect and/or emit infrared radiation in the mid-infrared to far-infrared region.

公开(公告)号：US20240271927A1

公开(公告)日：2024-08-15

申请号：US18693502

申请日：2022-09-20

Applicant: Agency for Science, Technology and Research

Inventor： Hai Sheng LEONG ,  Lin KE ,  Nan ZHANG ,  Qing Yang Steve WU ,  Sergey GORELIK ,  Hong LIU ,  Chun Yong Andrew NGO

IPC: G01B11/06

CPC classification number: G01B11/0625

Abstract: A paint thickness measuring device and a computer-implemented method for measuring paint thickness using the same are provided. The paint thickness measuring device includes a first continuous-wave (cw) laser, a second continuous-wave laser, a photomixer, one or more computer processors, and a non-transitory computer-readable memory. The photomixer includes an optical coupler configured to mix laser lights emitted by the first and second continuous-wave lasers and generate a terahertz (THz) wave, a photomixer emitter configured to emit the terahertz wave, and a photomixer receiver configured to detect the terahertz wave reflected off a painted surface. The non-transitory computer-readable memory stores computer program instructions executable by the one or more computer processors to perform operations for paint thickness measurement. The operations include: comparing the detected terahertz wave to simulation results, identifying a minimum difference between the detected terahertz wave and the simulation results, and determining a paint thickness of the painted surface from the simulation results with the minimum difference.