Tunable plasmonic perfect absorbers for enhanced biosensing and environmental detection

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-02-26 DOI:10.1016/j.optcom.2025.131671

Tazeen Zahra , Ijaz Ahmad , M. Abdul Mohemine , Aqeel A. Syed , Saleh S. Alarfaji , Muhib Ullah , Wajid Ali , Zahir Muhammad

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引用次数: 0

Abstract

This study investigates arrayed split-ring nanostructures within a semiconductor-metal-semiconductor (SMS) configuration, achieving an impressive peak light absorption of 99.9 % in the near-infrared (NIR) spectrum. This high absorption efficiency is primarily attributed to Fabry-Pérot cavity resonance, which enables strong coupling of magnetic and electric fields within the structure. The resonant peak can be precisely tailored by altering the geometric parameters of the split rings, including thickness, periodicity, and other structural features, offering significant flexibility for device optimization. Compared to conventional metal-insulator-metal (MIM) setups, the SMS configuration not only delivers comparable performance but also provides a cost-effective and scalable alternative for practical applications. The design demonstrates robust sensing capabilities, achieving a sensitivity of 1000 nm/RIU in the visible spectrum and 553.57 nm/RIU in the NIR region. These characteristics highlight the potential of the proposed structure for advanced applications in photonic devices, including light-harvesting systems and highly sensitive optical sensors.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.