Medium nanometer light wave antenna sensor based on rod-ring structure and application

Abstract

The invention discloses a medium nanometer light wave antenna sensor based on a rod-ring structure; a material mainly containing silicon dioxide is used as a substrate; a silicon layer of the rod-ringstructure arranged in a periodic array mode is arranged on the substrate, and for incident light with the wavelength ranging from 600 nanometers to 2500 nanometers, peaks can be obtained in transmission / reflection spectral lines. By utilizing the polaron resonance characteristics that the medium material can be polarized under irradiation of incident light and generate an internal displacement current, the change of an environment refractive index can be indirectly detected, and then water pollutants can be detected. Due to a low-loss characteristic, damage to sensing marker molecules due toa strong light heat effect can be avoided while large local field enhancement is obtained, and composition and concentration of to-be-detected protein molecules can be reversely deduced according to resonance wavelength obtained through detection through early calibration and later comparison.

Description

technical field [0001] The invention relates to an optical sensing nano device, in particular to a dielectric nano light wave antenna sensor based on a rod-ring structure and its application. Background technique [0002] In recent years, the problem of water pollution has been paid more and more attention. As far as trace pollutants in water are concerned, their concentration is extremely low, and the composition of water in nature is very complex. Various complex components can easily cause great interference to the detection of target objects, and it is difficult to directly detect pollutants. [0003] An effective solution is to use the organisms in the water body to indirect detection of water body pollution. However, this method requires the participation of organisms, and it is relatively difficult to screen suitable biological proteins for indirect detection in the early stage. Taking the specific biomarker acetylcholinesterase in fish protein as an example, when t...

AI Technical Summary

Problems solved by technology

In the field of light wave antenna biosensing, the more common way is to use the local surface plasmon resonance of the metal light wave antenna, but this resonance is easy to produce strong absorption of light, forming high temperature in the local area, if combined with antibody antigen for biological Detection, easy to destroy the activity of antigen antibody protein, affect the existing activity of protein, and most metals are toxic to protein

[0005] In summary, there is currently no simple, efficient, and non-toxic method for directional monitoring of trace pollutant protein molecules to be detected in polluted water

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