公开(公告)号：US20200249185A1

公开(公告)日：2020-08-06

申请号：US16640421

申请日：2018-08-23

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Jin KAWAKITA ,  Akihiko OHI ,  Tomoko OHKI ,  Naoki IKEDA ,  Toshihide NABATAME ,  Toyohiro CHIKYO

IPC: G01N27/04

Abstract: The present invention is to provide a small-sized dryness/wetness responsive sensor that detects a galvanic current with a high sensitivity as a principle of operation. According to one embodiment of the present invention, a dryness/wetness responsive sensor comprises a thin wire made of a first metal and a thin wire made of a second metal, the second metal is different from the first metal, the thin wire of the first metal and the thin wire of the second metal are disposed in juxtaposition with each other on an insulating substrate, and a surface state of a part between the thin wire of the first metal and the thin wire of the second metal is hydrophilic or hydrophobic.

公开(公告)号：US20230163567A1

公开(公告)日：2023-05-25

申请号：US17963505

申请日：2022-10-11

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE ,  KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuaki SAKODA ,  Yuanzhao YAO ,  Takashi KURODA ,  Naoki IKEDA ,  Yoshimasa SUGIMOTO ,  Takaaki MANO ,  Shinji SAITO ,  Rei HASHIMOTO ,  Kei KANEKO ,  Tsutomu KAKUNO ,  Hiroshi OHNO

IPC: H01S5/11 ,  H01S5/34 ,  H01S5/343

CPC classification number: H01S5/11 ,  H01S5/3402 ,  H01S5/34306 ,  H01S5/34313 ,  H01S2302/00

Abstract: Provided is a surface emitting quantum cascade laser, including: semiconductor layers other than a laser active layer and the laser active layer; and a square-lattice or rectangular-lattice photonic crystal on the laser active layer, wherein a unit lattice of the square-lattice or rectangular-lattice photonic crystal is made of a composition A, and a composition B having a refractive index different from a refractive index of the composition A, and wherein the composition A is a compound semiconductor composition or metal composition, the composition B is a compound semiconductor composition, and the unit lattice of the square-lattice or rectangular-lattice photonic crystal has the following structure: a columnar structure body having a pentagonal bottom face and being made of the composition B is provided in a central part of the columnar structure body having the square or rectangular bottom face and being made of the composition A.