Single-Mode Control and Individual Nanoparticle Detection in the Ultraviolet Region Based on Boron Nitride Microdisk with Whispering Gallery Mode.

Jiaxing Li, Qiang Li, Ransheng Chen, Qifan Zhang, Wannian Fang, Kangkang Liu, Feng Li, Feng Yun

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Article in Nanomaterials (Basel, Switzerland), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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8 authors.

Jiaxing LiKey Laboratory of Physical Electronics and Devices for Ministry of Education and Shaanxi Provincial Key Laboratory of Photonics & Information Technology, Xi'an Jiaotong University, Xi'an 710049, China.

Qiang LiKey Laboratory of Physical Electronics and Devices for Ministry of Education and Shaanxi Provincial Key Laboratory of Photonics & Information Technology, Xi'an Jiaotong University, Xi'an 710049, China.ORCID 0000-0001-9522-5234

Ransheng ChenSchool of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Qifan ZhangSchool of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Wannian FangSchool of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Kangkang LiuSchool of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Feng LiKey Laboratory of Physical Electronics and Devices for Ministry of Education and Shaanxi Provincial Key Laboratory of Photonics & Information Technology, Xi'an Jiaotong University, Xi'an 710049, China.

Feng YunSchool of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Funding

the Fundamental Research Funds for the Central Universities Nos. xyz012022088, xzd012023045the National Key R&D Program of China No. 2021YFB3602000

6 · The paper itself

Abstract

Optical microcavities are known for their strongly enhanced light-matter interactions. Whispering gallery mode (WGM) microresonators have important applications in nonlinear optics, single-mode output, and biosensing. However, there are few studies on resonance modes in the ultraviolet spectrum because most materials with high absorption properties are in the ultraviolet band. In this study, the performance of a microdisk cavity based on boron nitride (BN) was simulated by using the Finite-difference time-domain (FDTD) method. The WGM characteristics of a single BN microdisk with different sizes were obtained, wherein the resonance modes could be regulated from 270 nm to 350 nm; additionally, a single-mode at 301.5 nm is achieved by cascading multiple BN microdisk cavities. Moreover, we found that a BN microdisk with a diameter of 2 μm has a position-independent precise sensitivity for the nanoparticle of 140 nm. This study provides new ideas for optical microcavities to achieve single-mode management and novel coronavirus size screening, such as SARS-CoV-2, in the ultraviolet region.

Indexed as

boron nitridenanoparticle detectionoptical microcavitiesultravioletWGM

Identifiers

PMID38535649

DOI10.3390/nano14060501

PMCPMC10975174

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.