Metamaterial structure for enhancing Terahertz wave detection biological cell tissue signals

Abstract

The invention relates to a metamaterial structure for enhancing Terahertz wave detection biological cell tissue signals. According to the metamaterial structure, a method of painting tissues of biological samples on a rectangular array formed by transmission-type double-frequency absorption structure units is adopted to ensure that when short pulse signals generated by a Terahertz wave generationdevice pass the samples and a metamaterial structure array, Terahertz signals and a vibration rotating frequency of specific substances in the biological tissues generate resonance absorption; the feature absorption frequency is just identical with an absorption frequency of a designed metamaterial double-frequency structure; and resonance amplification is carried out to ensure that the feature peak is more obvious and the interferences of noise signals are inhibited, so that the function of enhancing the Terahertz wave detection biological tissue cell effect is achieved. The metamaterial structure is capable of improving the feature absorption peak signals of key substances in to-be-detected biological samples and inhibiting the noise signals to ensure that the biological detection efficiency and correctness are greatly enhanced.

Description

technical field [0001] The invention relates to a terahertz detection enhancement technology, in particular to a metamaterial structure for enhancing terahertz waves to detect biological cell tissue signals. Background technique [0002] In recent decades, terahertz waves have become an important research topic in the field of physics in the world due to its wide application prospects. Terahertz waves refer to electromagnetic waves (1THz=10 12 Hz), which lies between microwaves and infrared waves in the electromagnetic spectrum. The special electromagnetic spectrum position of terahertz wave makes it have many unique advantages: it has the characteristics of rich information, high space-time coherence, low photon energy, etc., and has great application value in scientific fields such as astronomy, biology, computer, and communication. At present, the main applied research includes terahertz time-domain spectroscopy technology, terahertz imaging technology, security inspect...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that the current terahertz biological detection is difficult to detect samples with low absorption coefficient or micro samples, and proposes a metamaterial structure for enhancing terahertz wave detection of biological cell tissue signals. The method on the rectangular array composed of double-frequency absorbing structural units makes the short pulse signal generated by the terahertz wave generator pass through the sample and the metamaterial structure array, and the vibration and rotation of the terahertz signal and the specific substance in the biological tissue Frequency resonance absorption occurs, and the characteristic absorption frequency coincides with the absorption frequency of the designed metamaterial dual-frequency structure. Resonance amplification is performed to make the characteristic peak more obvious and suppress the interference of noise signals, thereby achieving enhanced terahertz waves. The function of detecting the effect of biological tissue cells

Images