Tiefeng He
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View article: Research on and Experimental Verification of the Efficiency Enhancement of Powerspheres Through Distributed Incidence Combined with Intracavity Light Uniformity
Research on and Experimental Verification of the Efficiency Enhancement of Powerspheres Through Distributed Incidence Combined with Intracavity Light Uniformity Open
In laser wireless power transmission systems, the powersphere serves as a spherical enclosed receiver that performs photoelectric conversion, achieving uniform light distribution within the cavity through infinite internal light reflection…
View article: Rapid Dynamic Separation of Radial and Azimuthal Polarization Components in Circular Airy Vortex Beams via Linear Electro-Optic Effect in Uniaxial Crystals
Rapid Dynamic Separation of Radial and Azimuthal Polarization Components in Circular Airy Vortex Beams via Linear Electro-Optic Effect in Uniaxial Crystals Open
This paper presents a rapid approach for the dynamic separation of radial polarization (R-pol) and azimuthal polarization (A-pol) components in circular Airy vortex beams (CAVBs) by utilizing the linear electro-optic (EO) effect in uniaxia…
View article: Beyond 100 m Range Mini-LED-Based Visible Light Communication System
Beyond 100 m Range Mini-LED-Based Visible Light Communication System Open
In visible light communication (VLC) systems, lenses are typically used to collimate light at the transmitter. However, due to the wide light emission angle of mini-LEDs, capturing light at large angles using a lens at the transmitter can …
View article: Experimental and analytical study of light uniformity in the double-incidence powersphere based on ellipsoidal reflection within a cavity
Experimental and analytical study of light uniformity in the double-incidence powersphere based on ellipsoidal reflection within a cavity Open
The powersphere is an enclosed spherical photovoltaic receiver designed to achieve light uniformity through multiple reflections. However, in practical applications, the high absorption rate of the laser cells causes a significant differen…
View article: Experimentation and Analysis of Intra-Cavity Beam-Splitting Method to Enhance the Uniformity of Light in the Powersphere
Experimentation and Analysis of Intra-Cavity Beam-Splitting Method to Enhance the Uniformity of Light in the Powersphere Open
The powersphere is a spherical enclosed receiver composed of multiple photovoltaic cells. It serves as a replacement for traditional photovoltaic panels in laser wireless power transmission systems for optoelectronic conversion. The ideal …
View article: The Propagation Characteristics of Circular Airy Beams with Propagational Fractional-Order Optical Vortices
The Propagation Characteristics of Circular Airy Beams with Propagational Fractional-Order Optical Vortices Open
We investigate the propagation properties of circular Airy beams (CABs) with propagational fractional-order optical vortices (OVs). The superposition of the phase singularity and polarization singularity from a vortex vector beam (VVB) pla…
View article: Analysis and Experiment of Laser Energy Distribution of Laser Wireless Power Transmission Based on a Powersphere Receiver
Analysis and Experiment of Laser Energy Distribution of Laser Wireless Power Transmission Based on a Powersphere Receiver Open
Laser wireless power transmission (WPT) is one of the most important technologies in the field of long-range power transfer. This technique uses a laser as a transmission medium instead of conventional physical or electrical connections to…
View article: Analysis and Experiment of Laser Wireless Power Transmission Based on Photovoltaic Panel
Analysis and Experiment of Laser Wireless Power Transmission Based on Photovoltaic Panel Open
A photovoltaic panels is a device used for converting solar and other energy into electrical energy. In laser wireless power transmission, there is a problem that the conversion efficiency of the photovoltaic panel is not as high as that o…
View article: Propagation Characteristics of Circular Airy Vortex Beams in a Uniaxial Crystal along the Optical Axis
Propagation Characteristics of Circular Airy Vortex Beams in a Uniaxial Crystal along the Optical Axis Open
Circular airy vortex beams (CAVBs) have attracted much attention due to their “abruptly autofocusing” effect, phase singularity, and their potential applications in optical micromanipulation, communication, etc. In this paper, we numerical…
View article: Pore-Scale Modeling of Air–Water Two Phase Flow and Oxygen Transport in Gas Diffusion Layer of Proton Exchange Membrane Fuel Cell
Pore-Scale Modeling of Air–Water Two Phase Flow and Oxygen Transport in Gas Diffusion Layer of Proton Exchange Membrane Fuel Cell Open
Understanding multiphase flow and gas transport occurring in electrodes is crucial for improving the performance of proton exchange membrane fuel cells. In the present study, a pore-scale model using the lattice Boltzmann method (LBM) was …
View article: Design and Fabrication of Large-Size Powersphere for Wireless Energy Transmission via Laser
Design and Fabrication of Large-Size Powersphere for Wireless Energy Transmission via Laser Open
The powersphere is a device used for maximizing the conversion of light in wireless energy transmission via laser. It is a spherical structure made up of thousands of photovoltaic cells. Due to the large dimensions and existence of many ho…
View article: Fabrication of patterned solid surfaces with highly controllable wettability
Fabrication of patterned solid surfaces with highly controllable wettability Open
Precisely controlling the wettability of a solid surface is vital for a wide range of applications such as control of liquid droplet motion, water collection and the directional transport of fluids.
View article: Analysis and Experiment of the Laser Wireless Energy Transmission Efficiency Based on the Receiver of Powersphere
Analysis and Experiment of the Laser Wireless Energy Transmission Efficiency Based on the Receiver of Powersphere Open
Long-distance wireless energy transmission is realized by photoelectric conversion through lasers and photovoltaic cells. However, existing devices have low transmission power and low transmission efficiency. Exploring the main factors tha…