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Ultra-Sensitive Refractive Index Sensor for Early Detection and Diagnosis of Cancer and Influenza Diseases
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DOI:10.1007/s11468-026-03419-8.png)
Abstract
En 中文
In this research, a highly responsive RI sensor is proposed. These resonances correspond to unique E-field patterns, and the corresponding optical sensor exhibited an extremely elevated level of responsiveness to the ambient RI variations. The sensitivity of such optical sensors heavily depends on both the sensor’s constituent materials and its geometry. The framework of this sensor comprises the analyte above the graphene layer and the SiO2 and gold layers below it. The absorption curve of this sensor showed perfect absorption (99.99%) around the frequency of 13.34 terahertz, having an impressive mean Q-factor equal to 21.51. Its high sensitivity to subtle variations in the analyte RI is so high, that the absorption peak, frequency, and RI will change. This FOM along with the sensor’s sensitivity regarding in direct relation towards the variations occurring within the analyte RI were found 9.02 RIU− 1 and 3.7 THz/RIU, respectively. Thus, rendering the proposed device remarkably well-adapted and suitable for biomedical uses and early diagnosis of different types of cancer and the new field for subsequent research and progress.
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