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成果報告書詳細
管理番号20170000000661
タイトル*平成28年度中間年報 次世代人工知能・ロボット中核技術開発 (革新的ロボット要素技術分野)味覚センサ ロボットに実装可能なMEMS味覚センサ
公開日2017/8/30
報告書年度2016 - 2016
委託先名国立大学法人東京大学
プロジェクト番号P15009
部署名ロボット・AI部
和文要約
英文要約Title : Strategic Advancement of Multi-Purpose Ultra-Human Robot and Artificial Intelligence Technologies (Future robot technology) Taste sensor “MEMS taste sensor adjustable for robots” (FY2016-FY2017) FY2016 Annual Report

 The target of this project is to realize a SPR (Surface Plasmon Resonance)-MEMS taste sensor which can measure the taste for robot as same as human can do.
1. Measurement of change in surface chemical quantity
In order to check the performance of SPR to quantify the concentration of the taste substances, we formed a gold thin film on a prism through laser beam irradiation and measured its reflection power. From the result that the reflection was eminently suppressed at a specific angle, excitation of SPR was detected. Through the measurement of 0.2% and 1.0% salt water contact to the SPR sensor surface, it was learned that the shift in the SPR angle was approximately proportional to the concentration of the salt water.
It was experimentally demonstrated that SPR excitation could be electrically detected. The efficiency of the fabricated prototype SPR sensor was confirmed by irradiating 1500 nm wave length laser.
2. Fabrication method of detection layers for the taste materials
  Three types of detection layers were studied to detect several taste materials.
  To measure inorganic materials such as salt (NaCl), we formed a detection layer for an inorganic material onto the SPR sensor. By immersing the sensor into 5 wt% NaCl aq., we confirmed that the NaCl can be detected by SPR signal.
  The Goat-Antibody for Human-IgG serum was formed onto the SPR sensor. We confirmed that the adherence of the Human-IgG serum to the antibody can be measured with our prototype SPR sensor.
A detection layer for an organic material was formed on a substrate. The adhesion and homogeneity of the layer was confirmed by its SEM (Scanning Electron Microscope) images.
3. Mechanism to mount the taste sensor to robot
 The integration and miniaturization of SPR detector, laser irradiator, and measuring circuit are necessary to mount SPR sensor to robot. Therefore, we selected and installed a variable laser irradiation chip which can irradiate near-infrared light and can sweep its irradiation wave length.
4. Strategy design for practical realization of the taste sensor
As a strategy for practical realization of the taste sensor, we conducted market research by contacting with companies to evaluate the market demand for the taste sensors. The SPR-MEMS sensor with a miniature sensing surface proposed by this research project can measure the concentrations of target substances faster than conventional sensors, therefore, it can be used not only for the detection of taste substances but also for speeding up the measurement and inspection of various chemicals and biochemical substances other than the taste substances, which is confirmed as one of the important market demands for the implementation of such a device.
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