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嗅觉一般认为就是所谓的化学感觉,它是由于化学物质刺激嗅觉细胞而产生的感觉。日本早已着手进行代替嗅觉细胞的嗅敏传感器的开发工作。他们模拟嗅觉器官的构造,通过高分子膜吸附上臭物微粒所产生的特性变化,以及利用金属氧化物半导体吸附发嗅物质微粒后的阻抗变化的特性开发出嗅敏传感器。气敏传感器中广泛使用的一些金属氧化物半导体,如SnO_2、ZnO_2等材料也被用来开发嗅敏传感器。日本已有几家公司
Smell is generally regarded as the so-called chemical sensation, which is produced by chemical substances that stimulate the olfactory cells. Japan has long embarked on the development of a sniff sensor that replaces olfactory cells. They mimic the structure of the olfactory organs by exploiting the changes in the properties of the polymer particles adsorbed on the sooty particles and the development of the olfactory sensor using the change in impedance of the metal oxide semiconductor after it has been adsorbed to the olfactory substance particles. Some metal oxide semiconductors widely used in gas sensors, such as SnO 2 and ZnO 2, are also used to develop olfactory sensors. Japan already has several companies