Photonic Hook Generated by a Cut Anisotropic Liquid Crystal Microcylinder

Zhang, Mingyu; Li, Renxian; Wei, Bing; Gong, Shuhong; Minin, Igor V.; Minin, Oleg V.

doi:10.1109/apeie59731.2023.10347732

2023 IEEE XVI International Scientific and Technical Conference Actual Problems of Electronic Instrument Engineering (APEIE) 2023

DOI: 10.1109/apeie59731.2023.10347732

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Photonic Hook Generated by a Cut Anisotropic Liquid Crystal Microcylinder

Mingyu Zhang,

Renxian Li,

Bing Wei

et al.

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2024

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Tunable Photonic Hook Design Based on Anisotropic Cutting Liquid Crystal Microcylinder

Li,

Tang,

Zhang

et al. 2024

Photonics

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The selective control and manipulation of nanoparticles require developing and researching new methods for designing optical tweeters, mainly based on a photonic hooks (PHs) effect. This paper first proposes a tunable PH in which a structured beam illuminates an anisotropic cutting liquid crystal microcylinder based on the Finite-DifferenceTime-Domain (FDTD) method. The PHs generated by plane wave, Gaussian, and Bessel beam are analyzed and compared. The impact of beams and LC particle parameters on the PHs are discussed. Where the influence of the extraordinary refractive index (ne) on PHs is emphasized. Our results reveal that introducing birefringence can change the bending direction of PH. Besides, the maximum intensity of the PHs increases as ne increases regardless of the beam type. The PH generated by a plane wave has a higher maximum intensity and smaller FWHM than that generated by the Gaussian and Bessel beams. The smallest FWHM and maximum intensity of the PHs generated by the Gaussian falls between that generated by the plane wave and the Bessel beam. The PH generated by a Bessel beam has the minor maximum intensity and the largest FWHM. Still, it exceeds the diffraction limit and exhibits bending twice due to its self-recovery property. This paper provides a new way to modulate PH. This work offers novel theoretical models and the degree of freedom for the design of PHs, which is beneficial for the selective manipulation of nanoparticles. It has promising applications in Mesotronics and biomedicine.

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Tunable Photonic Hook Design Based on Anisotropic Cutting Liquid Crystal Microcylinder

Li,

Tang,

Zhang

et al. 2024

Photonics

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Photonic Hook Generated by a Cut Anisotropic Liquid Crystal Microcylinder

Cited by 1 publication

References 28 publications

Tunable Photonic Hook Design Based on Anisotropic Cutting Liquid Crystal Microcylinder

Tunable Photonic Hook Design Based on Anisotropic Cutting Liquid Crystal Microcylinder

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