Polarization independent metamaterial-based refractive index sensor for cancer early detection
- 1Electrical and Computer Engineering Faculty, Semnan University, Semnan, Iran
Abstract
In this research, we propose a single-narrow-band metamaterial absorber to operate within the THz spectrum. The structure consists of a combination of graphene and silver located on top of a silicon dioxide layer, with silver at the bottom. The absorber achieves its highest performance at a frequency of 9.38 THz, with an absorption rate of 99.5% and a quality factor (Q) of 16.75. It should be noted that the structure is insensitive for angle variations and can tolerate incident angle changes of up to 60 °. Furthermore, the resonance frequency is influenced by the refractive index (RI) of the desired analyte, indicating that the proposed structure has the potential to be used as a highly sensitive sensor based on RI variations. Our comprehensive performance analysis shows that the sensor initially achieves a maximum sensitivity of 3.53 (THz/RIU). Additionally, the Q and figure of merit (FoM) are remarkable, making this sensor highly suitable for medical applications. Potential uses include high-resolution imaging and precise biomedical detection and sensing, such as the early and highly accurate detection of cancers.
Related
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- An integrated bifunctional metamaterial perfect absorber for high-efficient broadband absorption and narrowband refractive index detection
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- Bidirectional Mid-Infrared Metamaterial with Ultrabroadband Polarization-Selective Absorption and Transmission
- Polarization-Robust and Electrically Tunable Quasi-Bound States in the Continuum in C4-Symmetric Terahertz Metasurfaces for Refractive-Index Sensing
BibTeX
@article{khodadadi2026polarization,
title = {{Polarization independent metamaterial-based refractive index sensor for cancer early detection}},
author = {Bahareh Khodadadi and Pejman Rezaei and Soheil Hadipour},
journal = {Next Materials},
year = {2026},
month = may,
doi = {10.1016/j.nxmate.2026.102334},
url = {https://doi.org/10.1016/j.nxmate.2026.102334},
note = {CC BY},
}
RIS
TY - JOUR
TI - Polarization independent metamaterial-based refractive index sensor for cancer early detection
AU - Bahareh Khodadadi
AU - Pejman Rezaei
AU - Soheil Hadipour
PY - 2026
DA - 2026/05/25
JO - Next Materials
DO - 10.1016/j.nxmate.2026.102334
UR - https://doi.org/10.1016/j.nxmate.2026.102334
AB - In this research, we propose a single-narrow-band metamaterial absorber to operate within the THz spectrum. The structure consists of a combination of graphene and silver located on top of a silicon dioxide layer, with silver at the bottom. The absorber achieves its highest performance at a frequency of 9.38 THz, with an absorption rate of 99.5% and a quality factor (Q) of 16.75. It should be noted that the structure is insensitive for angle variations and can tolerate incident angle changes of up to 60 °. Furthermore, the resonance frequency is influenced by the refractive index (RI) of the desired analyte, indicating that the proposed structure has the potential to be used as a highly sensitive sensor based on RI variations. Our comprehensive performance analysis shows that the sensor initially achieves a maximum sensitivity of 3.53 (THz/RIU). Additionally, the Q and figure of merit (FoM) are remarkable, making this sensor highly suitable for medical applications. Potential uses include high-resolution imaging and precise biomedical detection and sensing, such as the early and highly accurate detection of cancers.
SN - 2949-8228
ER -