Pohang University of Science and Technology Foundation

Electronics and Telecommunications Research Institute

Sl Corporation

Jaehyuck Jang

Junsuk Rho

Jong Woon Kim

Hyeong Do Kim

Sung-hoon Hong

Inki Kim

Soo-Jung Kim

Heonyeong Jeong

Doa Kim

Hanlyun Cho

Chunghwan Jung

Younghwan Yang

Byoungsu Ko

Provided is a security code. The security code including a first region and a second region includes a metal layer, a first dielectric pattern provided on the metal layer in the first region, a polymer pattern provided on the metal layer in the second region, a first metal pattern provided on the dielectric pattern, and a second metal pattern provided on the polymer pattern, wherein the polymer pattern includes a material different from that of the first dielectric pattern, and a thickness of the polymer pattern is different from a thickness of the first dielectric pattern.

Security code

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.

Volume changeable polymer humidity sensor

An optical lens capable of miniaturization and capable of easily implementing various optical characteristics and a lighting device using the same are provided. The optical lens includes a lens body including an incident surface and an emitting surface; and a plurality of nano holes that extend in a direction from the incident surface toward the emitting surface, and is formed to communicate with at least one of the incident surface or the emitting surface. In particular, the plurality of nano holes change a phase of light that is incident on the lens body.

Optical lens and lighting device using the same

Growing community of inventors

Pohang-si, South Korea

Jaehyuck Jang