Fengchuan Xu

Multiple Bound States in the Continuum in Deep‐Subwavelength Nonlocal Polar Dielectric Nanoparticles

Man Lin, Ye Zhang, Xiaofeng Xu, Fengchuan Xu et autres

ABSTRACT The confinement of light in open deep‐subwavelength nanostructures for enhanced light–matter interactions is a long‐standing goal in nanophotonics. Bound states in the continuum (BICs) offer a promising route to achieve light confinement, but their performance in deep‐subwavelength nanostructures is often limited. …

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Supplementary document for Self-adaptive photonic control of near-field radiative heat transfer: Dual-terminal flux stabilization and ultrahigh rectification enabled by thermal expansion synergy - 7819949.pdf

W. K. Ge, Fengchuan Xu, Lei Gao

Supplement 1

Supplementary document for Self-adaptive photonic control of near-field radiative heat transfer: Dual-terminal flux stabilization and ultrahigh rectification enabled by thermal expansion synergy - 7819949.pdf

W. K. Ge, Fengchuan Xu, Lei Gao

Supplement 1

Supplementary document for Self-adaptive photonic control of near-field radiative heat transfer: Dual-terminal flux stabilization and ultrahigh rectification enabled by thermal expansion synergy - 7819949.pdf

W. K. Ge, Fengchuan Xu, Lei Gao

Supplement 1

Self-adaptive photonic control of near-field radiative heat transfer: dual-terminal flux stabilization and ultrahigh rectification enabled by thermal expansion synergy

W. K. Ge, Fengchuan Xu, Lei Gao

Near-field radiative heat transfer systems typically exhibit performance drift under temperature excursions and seldom provide multifunctionality. We present a fully passive architecture that integrates positive and negative thermal expansion materials to achieve both thermal rectification and flux stabilization simultaneously. The device exploits …

Temporal dynamics of surface phonon polaritons in polar dielectric nanoparticles with nonlocality

Ye Zhang, Fengchuan Xu, Yang Huang, Lei Gao

Surface phonon polaritons (SPhPs) supported by polar dielectrics have been a promising platform for nanophotonics in mid-infrared spectral range. In this work, the temporal dynamic behavior of polar dielectric nanoparticles without (or with) spatial dispersion/nonlocality driven by the ultrashort Gaussian pulses is …

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Flexible Manipulated Interference Lithography Incorporating Modulated Optical Fourier Transform System

Yan Ye, Sen Qian, Hong Ye, Chang Hou Lu et autres

Abstract Spatial‐variant micro/nano‐structures are widely utilized in metasurfaces to modulate optical wave‐fronts into arbitrary shapes, performing as a new generation of flat optics. To flexibly fabricate micro/nano‐structures in real time, an optical Fourier transform system modulated by a diaphragm and a binary …

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High-performance transparent and flexible supercapacitor electrode based on nanopetal-structured MnO2

Fengchuan Xu, Zhouying Jiang, Yanhua Liu

The rapid development in portable and wearable electronics have stimulated the interest in the integrated energy storage devices. Flexible and transparent supercapacitors are responsible candidates for energy storage devices due to the high performance, quick charge/discharge and safety operation. Specially, it is …

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Scalable Fourier transform system for instantly structured illumination in lithography

Yan Ye, Fengchuan Xu, Guojun Wei, Yishen Xu et autres

We report the development of a unique scalable Fourier transform 4-f system for instantly structured illumination in lithography. In the 4-f system, coupled with a 1-D grating and a phase retarder, the ±1st order of diffracted light from the grating serve as …

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A printable color filter based on the micro-cavity incorporating a nano-grating

Yan Ye, Fengchuan Xu, Shangliang Wu, Wenqiang Wan et autres

A printable color filter based on the photonic micro-cavity incorporating a nanostructure is proposed, which consists of a nano-metallic grating, a dielectric layer and aluminum (Al) film. According to the resonance induced by different dielectric depths of the micro-cavity, two dielectric heights …

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Design of high power LED driver circuit based on RT8482

Fengchuan Xu

A RT8482-based boosting constant-current high-power LED drive circuit which outputs adaptive voltage was designed on the basis of V-I characteristics of LED.The circuit mainly consists of the input power polarity protection unit,LED boosting constant-current drive unit,PWM(pulse width modulation) digital dimming and variable …

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