Journal
OPTICS EXPRESS
Volume 27, Issue 13, Pages 19042-19049Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.27.019042
Keywords
-
Categories
Funding
- National Research Foundation of Korea (NRF) (Global Frontier Program) [CAMM-2014M3A6B3063700, 2019M3A6B3030638, 2017R1E1A1A01075394]
- KIST [2E29490, 2V06780]
- National Research Foundation of Korea [2V06780, 2019M3A6B3030638, 2E29490, 2017R1E1A1A01075394] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
We investigate spectral responses of two different terahertz (THz) metamaterials of double split ring resonator (DSRR) and the nano slot resonator (NSR) for molecule sensing in low concentration. Two different resonant frequencies of DSRR can be controlled by polarization angle of incident THz beam. For comparison of THz optical characteristics, two NSRs were made as showing the same resonant frequencies as DSRR's multimode. The monosaccharide molecules of glucose and galactose were detected by these two types of metamaterials matching the resonant frequencies in various concentration. NSR shows higher sensitivity in very low concentration range rather than DSRR, although the behavior was easily saturated in terms of concentration. In contrast, DSRR can cover more broad concentration range with clear linearity especially under high quality factor mode in polarization of 67.5 degree due to the Fano resonance. THz field enhancement distributions were calculated to investigate sensing performance of both sensing chips in qualitative and quantitative manner. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available