过去,用液晶测量人体表面温度时,都是直接涂敷胆甾醇,用以发现早期乳癌等病变。单纯使用胆甾醇时,螺距在可见光波长范围之内。和螺距相同的波长被反射,于是液晶显示出某种颜色。在自然光下就可看到温度变化。这种方法可用来测量人体大面积的温度变化,而在最近发表的文章中,提出用它测量治疗过程中或以后的人体某一部位的温度变化。目前,临床医学中,正在采用微波照射法治癌。这就要求能在不干扰微波电磁场的条件下测量人体表面的温度。因此,不能使用热电偶之类通常使用的金属温度传感器。于是有人提出了使用由有机物、绝缘物构成的液晶温度 In the past, when using liquid crystal to measure the surface temperature of the human body, the cholesterol was directly applied to find the pathological changes such as early breast cancer. When using cholesterol alone, the pitch is within the visible wavelength range. The same wavelength as the pitch is reflected, so the liquid crystal shows a certain color. In natural light you can see the temperature changes. This method can be used to measure large-scale temperature changes in the human body, and in a recently published article, it is proposed to measure temperature changes in a part of the human body during or after treatment. At present, clinical medicine is using microwave irradiation to treat cancer. This requires that the human body surface temperature can be measured without interfering with the microwave electromagnetic field. Therefore, the commonly used metal temperature sensor such as a thermocouple can not be used. So some people proposed the use of organic matter, insulation composed of liquid crystal temperature