| Autor: |
Jun Yang, Limei Qi, Bin Li, Liqin Wu, Dan Shi, Junaid Ahmed Uqaili, Xiang Tao |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Results in Physics, Vol 26, Iss , Pp 104332- (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2211-3797 |
| DOI: |
10.1016/j.rinp.2021.104332 |
| Popis: |
The real-time and label-free terahertz (THz) metamaterial (MM) sensor is proposed to distinguish the normal concentration of glucose from the abnormal concentration based on the THz time-domain spectroscopy (TDS) technology. The physical mechanism of the biosensing performance is verified theoretically and experimentally. The designed sensor is composed of a couple of asymmetric thick metals on a silicon dioxide substrate and exhibits two transmission dips at 0.26 THz and 0.4 THz in the region from 0.1 THz to 0.5 THz, respectively. Four glucose samples with concentrations from 4 mmol/L to 10 mmol/L with the step of 2 mmol/L are loaded on the top side of the sensor, respectively. The measured results show that the two dips have a red-shift as the concentration of glucose increases. The proposed sensor achieves the sensitivity of 1.22 THz/(mol/L) and 0.52 THz/(mol/L) and the limit of measurement reaches 9 mg/dL. The proposed THz MM sensor has potential applications in diagnosing hyperglycemia and the related diseases. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
