Chernyadiev Alexander V, But Dmytro B, Ivonyak Yurii, Ikamas Kęstutis, Lisauskas Alvydas
CENTERA Laboratories, Institute of High Pressure Physics PAS, Sokołowska st. 29/37, 01-142, Warsaw, Poland.
Institute of Applied Electrodynamics and Telecommunications, Vilnius University, Saulėtekio av. 9, 10222, Vilnius, Lithuania.
Sci Rep. 2024 May 20;14(1):11483. doi: 10.1038/s41598-024-61971-x.
Recently, plasmonic-based sensors operating in the terahertz frequency range have emerged as perspective tools for rapid and efficient label-free biosensing applications. In this work, we present a fully electronic approach allowing us to achieve state-of-the-art sensitivity by utilizing a near-field-coupled electronic sensor. We demonstrate that the proposed concept enables the efficient implementation and probing of a so-called ultra-strongly coupled sub-wavelength meta-atom as well as a single resonant circuit, allowing to limit the volume of material under test down to a few picoliter range. The sensor has been monolithically integrated into a cost-efficient silicon-based CMOS technology. Our findings are supported by both numerical and analytical models and validated through experiments. They lay the groundwork for near-future developments, outlining the perspectives for a terahertz microfluidic lab-on-chip dielectric spectroscopy sensor.
最近，工作在太赫兹频率范围的基于表面等离子体激元的传感器已成为用于快速高效无标记生物传感应用的有前景的工具。在这项工作中，我们提出了一种全电子方法，通过利用近场耦合电子传感器使我们能够实现最先进的灵敏度。我们证明，所提出的概念能够有效地实现和探测所谓的超强耦合亚波长元原子以及单个谐振电路，从而将被测材料的体积限制到几皮升的范围。该传感器已被单片集成到具有成本效益的硅基CMOS技术中。我们的研究结果得到了数值模型和分析模型的支持，并通过实验得到了验证。它们为不久的将来的发展奠定了基础，概述了太赫兹微流控芯片实验室介电谱传感器的前景。
