公开(公告)号：US20210063658A1

公开(公告)日：2021-03-04

申请号：US16961011

申请日：2019-01-16

Applicant: Agency for Science, Technology and Research

Inventor： Lennon Yao Ting Lee ,  Lionel You Liang Wong ,  Alex Yuandong Gu

IPC: G02B6/42 ,  G01N21/3504

Abstract: Various embodiments may relate to an optical device. The device may include an elongate substrate, an emitter portion at a distal end portion of the elongate substrate, the emitter portion configured to emit light, and an actuator portion at a proximal end portion of the elongate substrate opposite the distal end portion of the elongate substrate. The emitter portion may include a first electrode, a second electrode, and an active layer between the first electrode and the second electrode so that the light is emitted due to an increase in a temperature of the active layer upon application of a first potential difference between the first electrode and the second electrode. The active layer may be patterned to form a photonic crystal layer for enhancing directionality of the emitted light.

公开(公告)号：US11486820B2

公开(公告)日：2022-11-01

申请号：US16649448

申请日：2018-10-08

Applicant: Agency for Science, Technology and Research

Inventor： Hong Cai ,  Jifang Tao ,  Lennon Yao Ting Lee ,  Alex Yuandong Gu

IPC: G01N21/35 ,  G01N21/77 ,  G01N21/3504

Abstract: Various embodiments may relate a chemical sensor. The chemical sensor may include a substrate including a first sealed (or isolated) cavity and a second sealed (or isolated) cavity separate from the first sealed (or isolated) cavity. The chemical sensor may also include an emitter in the first sealed (or isolated) cavity, the emitter configured to emit infrared light. The chemical sensor may further include a detector in the second sealed (or isolated) cavity. The chemical sensor may also include a waveguide configured to carry the infrared light from the emitter to the detector. The waveguide may include a sensing portion configured such that a property of the infrared light carried through the sensing portion changes in response to a chemical entity in contact with the sensing portion. The detector may be configured to detect the change in the property (of the infrared light).

公开(公告)号：US20200278289A1

公开(公告)日：2020-09-03

申请号：US16649448

申请日：2018-10-08

Applicant: Agency for Science, Technology and Research

Inventor： Hong Cai ,  Jifang Tao ,  Lennon Yao Ting Lee ,  Alex Yuandong Gu

IPC: G01N21/3504 ,  G01N21/77

Abstract: Various embodiments may relate a chemical sensor. The chemical sensor may include a substrate including a first sealed (or isolated) cavity and a second sealed (or isolated) cavity separate from the first sealed (or isolated) cavity. The chemical sensor may also include an emitter in the first sealed (or isolated) cavity, the emitter configured to emit infrared light. The chemical sensor may further include a detector in the second sealed (or isolated) cavity. The chemical sensor may also include a waveguide configured to carry the infrared light from the emitter to the detector. The waveguide may include a sensing portion configured such that a property of the infrared light carried through the sensing portion changes in response to a chemical entity in contact with the sensing portion. The detector may be configured to detect the change in the property (of the infrared light).

公开(公告)号：US20240142679A1

公开(公告)日：2024-05-02

申请号：US18279024

申请日：2021-03-04

Applicant: Agency for Science, Technology and Research

Inventor： Conglin Sun ,  Chong Pei Ho ,  Lennon Yao Ting Lee

IPC: G02B5/20

CPC classification number: G02B5/208

Abstract: An absorber and a method of forming an absorber. The absorber may include a semiconductor absorption structure doped with dopants of a first conductivity type. The absorber may also include a semiconductor substrate doped with dopants of a second conductivity type different from the first conductivity type. The absorber may further include a dielectric layer between the semiconductor absorption structure and the semiconductor substrate. The absorber may additionally include a buried semiconductor structure included in a cavity of the dielectric layer, the buried semiconductor structure doped with dopants of the first conductivity type.

公开(公告)号：US20230317698A1

公开(公告)日：2023-10-05

申请号：US17928445

申请日：2020-06-01

Applicant: Agency for Science, Technology and Research

Inventor： Lennon Yao Ting Lee

IPC: H01L25/16 ,  G01N21/61 ,  H01L23/00

CPC classification number: H01L25/167 ,  G01N21/61 ,  H01L24/32 ,  H01L24/29 ,  H01L2224/32145 ,  H01L2224/29144

Abstract: A chemical sensor that includes a first semiconductor substrate. The chemical sensor may also include a second semiconductor substrate. The chemical sensor may further include one or more metal layers between the first semiconductor substrate and the second semiconductor substrate such that the first and second semiconductor substrates and the one or more metal layers form a cell including a cavity, the cavity having a depth of any value equal to or less than 100 μm. The chemical sensor may also include an optical source. The chemical sensor may additionally include an optical detector such that light emitted by the optical source passes through the cell to the optical detector. The first and second semiconductor substrates and the one or more metal layers may also define at least one inlet for fluid to flow into the cavity and at least one outlet for fluid to flow out of the cavity.

公开(公告)号：US11385421B2

公开(公告)日：2022-07-12

申请号：US16961011

申请日：2019-01-16

Applicant: Agency for Science, Technology and Research

Inventor： Lennon Yao Ting Lee ,  Lionel You Liang Wong ,  Alex Yuandong Gu

IPC: G02B6/42 ,  G01N21/3504

Abstract: Various embodiments may relate to an optical device. The device may include an elongate substrate, an emitter portion at a distal end portion of the elongate substrate, the emitter portion configured to emit light, and an actuator portion at a proximal end portion of the elongate substrate opposite the distal end portion of the elongate substrate. The emitter portion may include a first electrode, a second electrode, and an active layer between the first electrode and the second electrode so that the light is emitted due to an increase in a temperature of the active layer upon application of a first potential difference between the first electrode and the second electrode. The active layer may be patterned to form a photonic crystal layer for enhancing directionality of the emitted light.