Millimeter-wave sensor based on a λ/2-line resonator for identification and dielectric characterization of non-ionic surfactants
Artikel i vetenskaplig tidskrift, 2016

Studies of biological and artificial membrane systems, such as niosomes, currently rely on the use of fluorescent tags, which can influence the system under investigation. For this reason, the development of label-free, non-invasive detection techniques is of great interest. We demonstrate an open volume label-free millimeter-wave sensing platform based on a coplanar waveguide, developed for identification and characterization of niosome constituents. A design based on a λ/2-line resonator was used and on-wafer measurements of transmission and reflection parameters were performed up to 110 GHz. Our sensor was able to clearly distinguish between common niosome constituents, non-ionic surfactants Tween 20 and Span 80, measuring a resonance shift of 3 GHz between them. The complex permittivities of the molecular compounds have been extracted. Our results indicate insignificant frequency dependence in the investigated frequency range (3 GHz – 110 GHz). Values of permittivity around 3.0 + 0.7i and 2.2 + 0.4i were obtained for Tween 20 and Span 80, respectively.

Författare

Helena Rodilla

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Anna Kim

Kemi och kemiteknik, Kemi och biokemi, Fysikalisk kemi

Gavin Jeffries

Kemi och kemiteknik, Kemi och biokemi, Fysikalisk kemi

Josip Vukusic

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Aldo Jesorka

Kemi och kemiteknik, Kemi och biokemi, Fysikalisk kemi

Jan Stake

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Scientific Reports

2045-2322 (ISSN)

Vol. 6 19523

Styrkeområden

Informations- och kommunikationsteknik

Livsvetenskaper och teknik

Ämneskategorier

Annan kemiteknik

Annan kemi

Annan elektroteknik och elektronik

Infrastruktur

Nanotekniklaboratoriet

DOI

10.1038/srep19523