具有高灵敏度和非对称结构的导模共振传感器

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-01 DOI:10.1117/1.jnp.18.016005

Hikmat Mohammed Hasan AlAameri, Mehrdad Shokooh-Saremi

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引用次数: 0

摘要

导模共振（GMR）传感器具有光谱线宽窄、效率高等特点，能有效探测微小的折射率（RI）变化，因此受到越来越多的关注。在这项研究中，我们提出了一种二元、全介质、非对称 GMR（A-GMR）传感器结构，这种结构具有更高的灵敏度和更窄的谐振线宽，与对称的传感器相比，可大幅提高性能系数（FOM）。为实现最佳性能，采用了粒子群优化技术来优化结构参数。此外，还将所提出的 GMR 传感器与介质对称 GMR 传感器进行了比较。A-GMR 传感器的体积灵敏度高达 3157.6 nm/RIU，半最大全宽低至 0.076 nm，FOM 为 41547.368 (RIU)-1，显示出高性能的 RI 传感。

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Guided-mode resonance sensors with high sensitivity and asymmetric structures

An increasing amount of attention is being paid to guided-mode resonance (GMR) sensors since they can effectively detect small refractive indices (RIs) changes due to their narrow spectral linewidth and high efficiency. In this work, a binary, all-dielectric, asymmetric GMR (A-GMR) sensor structure with enhanced sensitivity and narrowed resonant linewidth is proposed to substantially improve the figure of merit (FOM) with respect to symmetric counterparts. To achieve the best performance, particle swarm optimization is employed to optimize the structural parameters. Furthermore, the proposed GMR sensor is compared with dielectric symmetric GMR sensors. High bulk sensitivity of 3157.6 nm/RIU, full width at half maximum down to 0.076 nm, and FOM of 41547.368 (RIU)−1 have been achieved for the A-GMR sensor, showing high-performance RI sensing.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.