方兴未艾的太赫兹生物医学传感器

Terahertz medical biosensors in the ascendance

太赫兹生物医学传感器在当前研究中属于一个热点,其工作原理主要依托人工周期性电磁媒介或二维材料构建电磁亚波长结构,与入射的太赫兹波相互作用时,引发类似表面等离子体共振现象,产生的局域电磁场增强效应对周围的介电环境敏感,从而改变太赫兹光谱中共振的品质因子与谐振频率,实现对生物分子的高灵敏度检测和分析。围绕近几年的研究现状,从生物传感器的类型及其在生物医学等领域的应用分别加以阐述,讨论了太赫兹生物医学传感器所面临的挑战和发展前景,旨在提供一些有价值的建议。

Terahertz biomedical sensor is a hot spot in the current research.Its implementation method is mainly based on the use of metamaterials or two-dimensional materials to construct electromagnetic subwavelength structures.When terahertz waves interact with the structures,they cause phenomena similar to surface plasmon resonance and generate local electromagnetic field enhancement effects.The enhanced electric field improves the interaction between light and biological samples,resulting in a change in spectral response,enabling highly sensitive detection and analysis of biomolecules.Based on the research status in recent years,this paper expounds the types of biosensors and their applications in biomedicine and other fields,and discusses the future challenges and development prospects.It hopes to provide some valuable suggestions.