| abstract |
A small biosensor capable of constantly analyzing biometric information is provided. [Solution] A lower clad layer 102 made of silicon oxide is provided on a substrate 101 made of silicon, and a core 103 and a core layer 104 made of silicon are provided on the lower clad layer 102. A detection region 121 is configured in a partial region of the core 103, and an adsorption film 131 that adsorbs a biological secretion such as sweat or sebaceous gland secretion is provided on the detection region 121. For example, the adsorption film 131 may be a functional film that selectively adsorbs nitrogen compounds such as ammonia, amino acids, uric acid, urea, creatine, and creatinine and sebaceous gland secretions such as cholesterol, fatty acid, glucose, and lactic acid. . [Selection] Figure 1 |