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采用激光或光纤的高敏感特性的化学传感器能实时观察生物分子相互反应的情况,可以分析大气中的氧、氮化物、臭氧、二氧化硫、硫化物和水中的C_o~(2+)、C_a~(2+)、B_i~(2+)C_r~(3-)、F_e~(2+)等离子.金属表面等离子体的谐振引起了表面电磁场的增强,从而增强了传感器的吸收敏感特性.这种由于表面等离子体谐振引起的吸收敏感特性增强技术简称为SPR技术,这是一种充压密度振荡,而且可扩散到金属表面上所存在的电磁场中,这种振荡离开了金属表面就迅速消失.利用这种方法,在金属表面上混合有反应剂的液体和薄膜样品的光吸收就可以检测到.借助于各种反应剂,可以测到各种化学元素.
The chemical sensors with high sensitivity of laser or fiber can observe the mutual reaction of biomolecules in real time, and can analyze C_o ~ (2 +), C_a ~ (+) in oxygen, nitrogen, ozone, sulfur dioxide, 2 +), B_i ~ (2+) C_r ~ (3 -), F_e ~ (2+) plasma.The resonance of the metal surface plasmons causes the enhancement of the surface electromagnetic field, thus enhancing the sensor’s absorption-sensitive properties. Absorption Sensitivity Enhancement Induced by Surface Plasmon Resonance The technique referred to as SPR, a charge-pressure oscillation, can diffuse into the electromagnetic field present on the metal surface and disappears rapidly as it exits the metal surface. In this method, light absorption of liquid and film samples mixed with reactants on the metal surface can be detected, and various chemical elements can be detected by means of various reactants.