Ms. Chai Hu Profile

Chai Hu

at Huazhong Univ of Science and Technology

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Author

Publications (9)

SPIE Journal Paper | 7 April 2022 Open Access

Arrayed silicon-based concave microlens fabricated by single mask ultraviolet-photolithography and dual-step KOH etching

Bo Zhang, Taige Liu, Zhe Wang, Wenhai Huang, Chai Hu, Kewei Liu, Mingce Chen, Jiashuo Shi, Xinyu Zhang

JOM, Vol. 2, Issue 02, 023501, (April 2022) https://doi.org/10.1117/12.10.1117/1.JOM.2.2.023501

KEYWORDS: Silicon, Microlens, Etching, Infrared radiation, Photomasks, Microlens array, Semiconducting wafers, Wavefronts, Spherical lenses, Corrosion

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Proceedings Article | 14 February 2020 Paper

Modeling and simulation of electro-modulation reflection and transmission characteristics of infrared optical antenna

Wenhai Huang, Dong Wei, Chai Hu, Bo Zhang, Xinyu Zhang

Proceedings Volume 11428, 114280D (2020) https://doi.org/10.1117/12.2539326

KEYWORDS: Antennas, Optical antennas, Graphene, Absorption, Dielectrics, Reflectivity, Infrared radiation, Signal detection, Silica, Transmittance

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Proceedings Article | 14 February 2020 Paper

Modeling and simulation of light reflection and transmission characteristics of electrically modulated infrared nano-apexes

Bo Zhang, Dong Wei, Chai Hu, Wenhai Huang, Xinyu Zhang

Proceedings Volume 11428, 114280C (2020) https://doi.org/10.1117/12.2539325

KEYWORDS: Graphene, Electrons, Scattering, Surface plasmons, Reflectivity, Reflection, Infrared radiation

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Proceedings Article | 14 February 2020 Paper

Modeling and simulation of DBRs based on a MEMS-FP array with a robust responsibility at different angles

Jinxing Liu, Chai Hu, Jie Yi, Wenda He, Xinyu Zhang

Proceedings Volume 11428, 114280A (2020) https://doi.org/10.1117/12.2539289

KEYWORDS: Transmittance, Liquid crystals, Microlens array, Optical filters, Reflectors, Infrared radiation, Imaging spectroscopy, Image filtering

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Proceedings Article | 14 February 2020 Paper

Infrared and terahertz integration detection based on optical antennas

Jun Luo, Dong Wei, Chai Hu, Xinyu Zhang, Changsheng Xie

Proceedings Volume 11428, 1142807 (2020) https://doi.org/10.1117/12.2538578

KEYWORDS: Optical antennas, Terahertz radiation, Image transmission, Infrared radiation, Gallium arsenide, Infrared detectors, Metals, Beam analyzers, Millimeter wave sensors, Electrodes

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Proceedings Article | 14 February 2020 Paper

Focusing behaviors of optical nanotip antenna array based on surface plasmons

Chai Hu, Jinxing Liu, Jie Yi, Xinyu Zhang

Proceedings Volume 11428, 114280E (2020) https://doi.org/10.1117/12.2539328

KEYWORDS: Surface plasmons, Reflectivity, Destructive interference, Transmittance, Antennas, Silica, Optical arrays

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Proceedings Article | 14 February 2020 Paper

Research on compressed light-field and infrared reflection characteristics of patterned metallic micro-nano-structure arrays

Jie Yi, Chai Hu, Dong Wei, Wenda He, Xinyu Zhang

Proceedings Volume 11428, 1142808 (2020) https://doi.org/10.1117/12.2539277

KEYWORDS: Reflectivity, Surface plasmons, Reflection, Infrared radiation, Electrons, Nanostructures, Diffraction, Near field, Plasmons

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Metallic micro-nano-structure arrays can be used to induce a collective oscillation of free electrons on the surface of metal films, so as to generate relatively strong surface plasmons (SPs) at the metal and medium interface and further localized light field under the excitation of incident lightwaves. As the oscillating light field propagating along the interface, the field strength can be increased reasonably at the functioned metal surface such as the incident light energy being localized in the sub-wavelength region defined by the functioned micro-nano-structures. The common beam diffraction limit formed during lightwave transmission or process can be broken effectively. Through constructing SPs over the special micro-nano-structures, the infrared reflection characteristics can be changed and then the local light field originated from incident infrared radiation also be enhanced significantly so as to efficiently perform infrared detection. Generally, the reflectivity and light field distribution behaviors of the functioned metal surface can be modulated by changing featured parameters of the metallic micro-nano-structural arrays. In this paper, a metal micro-nano-patterned structures with an arrayed tip is established for compressing the incident light field and then reducing the reflectivity of the metal surface and thus sensing incident light energy. A finite integral method for simulating and analyzing the structural characters such as the distance between tips, the tip sharpness, the thickness of the metal film, is utilized to acquire the reflectivity and field enhancement characteristics. The infrared reflection spectrum and the near-field intensity distribution of the metallic micro-nano-structure are compared and analyzed. The results show that the response frequency and excitation intensity of SPs over the nano-tip array, the intensity and distribution region of the strong light field, can be controlled by matching the structural parameters and layout. The optimization of the metallic micro-nanostructure arrays is conducted so as to lay a solid foundation for further development of the similar technologies.

Proceedings Article | 15 November 2018 Paper

Modeling and simulation of electromodulation imaging spectrum based on a MEMS-FP array with a high filling-factor

Jinxing Liu, Chai Hu, Leilei Niu, Xinyu Zhang, Haiwei Wang, Changsheng Xie

Proceedings Volume 10964, 109644O (2018) https://doi.org/10.1117/12.2506135

KEYWORDS: Microlens array, Microelectromechanical systems, Modeling and simulation, Infrared imaging

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Proceedings Article | 15 November 2018 Paper

Modeling and simulation of optical micro-nano-antenna for THz radiation

Chai Hu, Jinxing Liu, Leilei Niu, Xinyu Zhang, Haiwei Wang, Changsheng Xie

Proceedings Volume 10964, 109644N (2018) https://doi.org/10.1117/12.2506134

KEYWORDS: Terahertz radiation, Metamaterials, 3D modeling, Finite element methods, Modeling and simulation, Metals, Electromagnetic radiation, Gold, Electromagnetism, Computer simulations

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