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Development of taste sensor system with the high durability by transition metal oxide semiconductor thin film

利用过渡金属氧化物半导体薄膜开发高耐久性味觉传感器系统

基本信息

批准号：
10555133
负责人：
SEKI Kyoshiro
金额：
$ 8.38万
依托单位：
Iwate University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10555133/
关键词：
taste sensor drink transition metal oxide MnZn ferrite thin film sputtering method vacuum deposition method アニーリングパターン認職スピネル構造

项目摘要

In this research, we developed the Drink Recognition System (DRS) with high durability. The electrical property of ferrite changes according to a sort of a molecule and an ion absorbed physically on its surface, so it can be applied like the taste sensor. We applied the MnZn ferri magnetic thin film (FMF) to the drink recognition sensor and constructed DRS.The FMF is prepared on Al_2O_3 substrate by the sputtering or the vacuum deposition and the annealing process. The durability is very high, since FMF is the metal oxide. When various taste components included in food adheres to the FMF, electromotive force on surface of the FMF changes. Therefore, the FMF can recognize the foods. The multi channel recognition system combined with the plural FMF sensors having different electrical properties by the preparation conditions can clearly distinguish the kinds of various drinks from output patterns. The output patterns of DRS indicate different response to each fundamental taste materials. Therefore, it seems that the DRS can recognize various drinks.For various drinks, discrimination test were carried out by the DRS.For example, the sample drinks are grouped in 6 types (red wine, white wine, oolong tea, green tea, sports drink and mineral drink), and three brands (_<1〜>3) are included for each groups, respectively. It is shown that the outputs of DRS for the drinks of the same type are distributed in a close place, respectively.In the repeat test throughout a week with the one time measurement every day, the error of an output of DRS was about 7〜10%. The sensing due to DRS seems to show comparatively high reproducibility, when the distribution of measured sample is considered.The discrimination test for various samples was carried out for about 10 months. The degradation of ferrimagnetic semiconductor thin film as a sensor of the drink recognition system was not appeared. It was confirmed that the drink recognition system was stood long-term use.

在本研究中，我们开发了具有高耐久性的饮料识别系统（DRS）。铁氧体的电性能根据物理吸附在其表面上的一种分子和一种离子而变化，因此它可以像味觉传感器一样应用。将MnZn铁磁性薄膜（FMF）应用于饮料识别传感器中，构建了DRS，FMF是在Al_2O_3基片上通过溅射或真空沉积以及退火工艺制备的。耐久性非常高，因为FMF是金属氧化物。当食品中包含的各种味道成分附着在FMF上时，FMF表面上的电动势发生变化。因此，FMF可以识别食物。与根据制备条件具有不同电特性的多个FMF传感器组合的多通道识别系统可以从输出模式清楚地区分各种饮料的种类。DRS的输出模式表明对每种基本味觉材料的不同反应。对不同种类的饮料进行了区分试验，将样品分为6类（红葡萄酒、白色葡萄酒、乌龙茶、绿色茶、运动饮料和矿物质饮料），每组3个品牌。结果表明，同类型饮料的DRS输出值均呈封闭分布，在一周内每天测量一次的重复试验中，DRS输出值的误差约为7 ~ 10%。考虑到被测样品的分布，DRS传感似乎具有较高的重现性，对各种样品进行了约10个月的区分测试。铁磁半导体薄膜作为饮料识别系统的传感器没有出现退化现象。经证实，饮料识别系统是站在长期使用。