公开(公告)号：US20210396659A1

公开(公告)日：2021-12-23

申请号：US17181845

申请日：2021-02-22

Applicant: POSTECH Research and Business Development Foundation

Inventor： Jaehyuck JANG ,  Junsuk RHO

IPC: G01N21/3554 ,  G01B11/06

Abstract: Disclosed are a sensor including a first metal layer and a second metal layer facing each other, and a volume changeable layer disposed between the first metal layer and the second metal layer and capable of absorbing a material to change the thickness thereof, wherein at least one of the first metal layer and the second metal layer is a semi-transmissive layer and the sensor indicates a color change by changing a resonance wavelength of light transmitted through the semi-transmissive layer according to a change in thickness of the volume changeable layer, and a sensor device, an electronic device, a smart window, and an IoT system including the same.

公开(公告)号：US20230280694A1

公开(公告)日：2023-09-07

申请号：US18116720

申请日：2023-03-02

Applicant: POSTECH Research and Business Development Foundation

Inventor： Junsuk RHO ,  Inki KIM ,  Jaehyuck JANG ,  Gyeongtae KIM

IPC: G03H1/22 ,  H04L9/40

CPC classification number: G03H1/2294 ,  G03H1/2205 ,  H04L63/083 ,  G03H2223/22 ,  G03H2270/30 ,  G03H2225/36

Abstract: An apparatus for creating a holographic image, comprising: a first polarizing plate; a metasurface configured to create a first holographic image by modulating a polarization state of a light beam passing through the first polarizing plate; a controller configured to supply voltage to a voltage-varied liquid crystal (LC); and the voltage-varied LC configured to create a second holographic image by modulating a polarization state of the first holographic image according to the voltage and operating method thereof are provided.