التفاصيل البيبلوغرافية
| العنوان: |
Sensitivity-Enhanced SPR Sensor Based on Graphene and Subwavelength Silver Gratings |
| المؤلفون: |
Lu Kong, Jiangtao Lv, Qiongchan Gu, Yu Ying, Xiaoxiao Jiang, Guangyuan Si |
| المصدر: |
Nanomaterials, Vol 10, Iss 11, p 2125 (2020) |
| بيانات النشر: |
MDPI AG, 2020. |
| سنة النشر: |
2020 |
| المجموعة: |
LCC:Chemistry |
| مصطلحات موضوعية: |
surface plasmon resonance, graphene, subwavelength grating, sensitivity, Chemistry, QD1-999 |
| الوصف: |
A novel surface plasmon resonance (SPR) sensor with graphene and subwavelength gratings is proposed to improve the sensing performance. A series of numerical analyses were performed to investigate the effect of structural parameters on the sensing performance, such as minimum reflectance at resonance (MRR), full width at half maximum (FWHM), and resonance angle. The results indicated that near-zero MRR (2.9 × 10−6) and narrow FWHM (about 3.5 deg) could be obtained by optimizing the geometrical parameters. Moreover, the influence of the number of graphene layers on sensitivity was also studied. The maximum sensitivity of the designed sensor could reach 192 deg/refractive index unit (RIU), which is a great enhancement compared to the silver-only SPR sensor. In addition, ethylene glycol solutions with different refractive indices were detected. The results showed that the sensitivity of the sensor could reach 220.67 deg/RIU, and the proposed sensor had excellent linearity between the resonance angle and refractive index, enabling extensive potential practical sensing applications. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2079-4991 |
| Relation: |
https://www.mdpi.com/2079-4991/10/11/2125; https://doaj.org/toc/2079-4991 |
| DOI: |
10.3390/nano10112125 |
| URL الوصول: |
https://doaj.org/article/9360f263f8b3492ea7e55f9db6d3392a |
| رقم الانضمام: |
edsdoj.9360f263f8b3492ea7e55f9db6d3392a |
| قاعدة البيانات: |
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