| 摘要 |
A first sensor (2, 4, 120, 230, 232, 300) senses an organic gas, liquid or vapor and includes a first support (30, 32, 102, 210, 212, 306) having a first support surface with a layer of material (26, 28, 112, 216, 218, 302) fastened to it. In the presence of liquid, gas or vapor, the material (26, 28, 112, 216, 218, 302) swells and expands so as to vary at least one of its dimensions. Such expansion develops a stress at an interface between the first support surface and the material (26, 28, 112, 216, 218, 302), and strain sensitive devices (14, 16, 100, 204, 206, 210, 212, 306, 308) detect the stress and produce an output which varies as a function of the stress at the interface. |
