通过介电波导-纳米粒子阵列的相互作用实现手性传感。

IF 3.2 2区 物理与天体物理 Q2 OPTICS
Optics express Pub Date : 2024-11-04 DOI:10.1364/OE.538940
Hamed Nouri, Amir Nader Askarpour, Parisa Dehkhoda, Ahad Tavakoli
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引用次数: 0

摘要

识别少量手性材料的手性仍然是生物化学领域的一项重大挑战。纳米光子结构通过增加光学手性来增强微弱的手性响应,从而提供了一种前景广阔的解决方案。在光子集成平台上利用基于硅的方法进行手性传感是非常理想的。在本研究中,我们探讨了介质波导与硅纳米粒子之间的相互作用,以检测手性分析物的手性。手性内核会引起沿方形截面介质波导传播的波场发生偏振旋转。这种偏振旋转会根据纳米粒子在波导周围的左旋或右旋排列对波导耦合产生不同的影响,从而通过明显的传输差异实现对映体检测。从基本设计到更实用的结构,我们研究了保持相同工作原理的配置。基于传递矩阵法的理论结果证实了数值模拟结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Chiral sensing via dielectric waveguide-nanoparticle array interactions.

Identifying the handedness of chiral materials in small quantities remains a significant challenge in biochemistry. Nanophotonic structures offer a promising solution by enhancing weak chiroptical responses through increased optical chirality. Utilizing a silicon-based approach for chiral sensing on a photonic integrated platform is highly desirable. In this study, we explore the interaction between a dielectric waveguide and silicon nanoparticles for detecting the handedness of chiral analytes. A chiral core induces polarization rotation of wavefields traveling along a dielectric waveguide with a square cross-section. This polarization rotation affects waveguide coupling differently depending on the left- or right-handed arrangement of nanoparticles around the waveguide, enabling enantiomer detection through discernible transmission differences. From a basic design to more practical structures, we investigate configurations that maintain the same working principles. Theoretical results based on the transfer matrix method corroborate the numerical simulations.

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来源期刊
Optics express
Optics express 物理-光学
CiteScore
6.60
自引率
15.80%
发文量
5182
审稿时长
2.1 months
期刊介绍: Optics Express is the all-electronic, open access journal for optics providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and photonics.
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