| Title |
A CMOS-integrated terahertz near-field sensor based on an ultra-strongly coupled meta-atom / |
| Authors |
Chernyadiev, Alexander V ; But, Dmytro B ; Ivonyak, Yurii ; Ikamas, Kęstutis ; Lisauskas, Alvydas |
| DOI |
10.1038/s41598-024-61971-x |
| Full Text |
|
| Is Part of |
Scientific reports.. Berlin : Nature Research. 2024, vol. 14, iss. 1, art. no. 11483, p. [1-10].. eISSN 2045-2322 |
| Keywords [eng] |
coupled resonators ; metasurface ; near-field sensor ; split-ring resonator ; terahertz |
| Abstract [eng] |
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. |
| Published |
Berlin : Nature Research |
| Type |
Journal article |
| Language |
English |
| Publication date |
2024 |
| CC license |
|
