SALT SENSOR DEVICE AND MANUFACTURING METHOD THEREOF

• Main Authors: YAMAZAKI HIROSHI, SEKI ATSUSHI, WATANABE KAZUHIRO, SASAKI HIROYUKI, IWASA KOICHI, KON TETSUYA, NISHIYAMA MICHIKO
• Format: Patent
• Language: English; Japanese
• Published: 03.08.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

To provide a salt sensor device that can observe an amount of salt such as sodium chloride in situ over a long period of time and can further increase sensitivity to salt concentration, and a method for manufacturing the salt sensor device.SOLUTION: A salt sensor device 1 includes an optical fiber 4 that includes an optical transmission part 2 having a core 5 and a clad 6a, and a hetero-core part 3 having a core 5b and a clad 6b, in which the core 5b is smaller in diameter than the core 5a. The salt sensor device includes an inorganic-organic composite laminated film 7 in which a plurality of metal nanoparticle layers and a plurality of polyion layers covering the metal nanoparticle layers are alternately laminated on an outer peripheral surface of the clad 6b of the hetero-core part 3.SELECTED DRAWING: Figure 1 【課題】塩化ナトリウム等の塩の量をＩｎＳｉｔｕで長期に亘って観測することができ、しかも塩の濃度に対する感度をさらに増加させることができる塩センサ装置及びその製造方法を提供する。【解決手段】塩センサ装置１は、コア５ａ及びクラッド６ａを有する光伝送部２と、コア５ｂ及びクラッド６ｂを有するヘテロコア部３とを備え、コア５ｂがコア５ａよりも小径である光ファイバ４を備える。ヘテロコア部３のクラッド６ｂの外周面に複数の金属ナノ粒子層と、該金属ナノ粒子層を被覆する複数のポリイオン層とが交互に積層してなる無機－有機複合積層膜７を備える。【選択図】 図１