Yiping Han
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View article: Integrated modeling method of ultraviolet radiation and transmission in aircraft plume detection
Integrated modeling method of ultraviolet radiation and transmission in aircraft plume detection Open
The radiation characteristics of aircraft plumes provide the basis for target detection and tracking. Radiation simulation of the plume mainly includes the radiation simulation of its flow field and the transmission characteristics during …
View article: External Large Foundation Model: How to Efficiently Serve Trillions of Parameters for Online Ads Recommendation
External Large Foundation Model: How to Efficiently Serve Trillions of Parameters for Online Ads Recommendation Open
Ads recommendation is a prominent service of online advertising systems and has been actively studied. Recent studies indicate that scaling-up and advanced design of the recommendation model can bring significant performance improvement. H…
View article: Analysis of electromagnetic wave characteristics of heterogeneous plasma sheath based on the ZT-DGTD
Analysis of electromagnetic wave characteristics of heterogeneous plasma sheath based on the ZT-DGTD Open
A hypersonic plasma sheath is an unmagnetized, weakly ionized, and inhomogeneous plasma flow that causes a blackout in radio communication. Studying the propagation of electromagnetic waves in a plasma flow is of significant importance for…
View article: A sustainable balance between innovation and risk: How the “right to science” affects China’s medical biotechnology regulatory policy
A sustainable balance between innovation and risk: How the “right to science” affects China’s medical biotechnology regulatory policy Open
Medical biotechnology is at the forefront of scientific progress, with humanity facing a critical juncture during the pandemic. However, to maximize these benefits, governments face the complex challenge of reconciling innovation and risk.…
View article: Silicon eccentric shell nanoparticles fabricated by template-assisted deposition for Mie magnetic resonances enhanced light confinement
Silicon eccentric shell nanoparticles fabricated by template-assisted deposition for Mie magnetic resonances enhanced light confinement Open
We report a structure of silicon eccentric shell particles array, fabricated by the SiO 2 particles monolayer array assisted deposition of amorphous Si, for high-efficiency light confinement. The SiO 2 particles monolayer array is tailored…
View article: Multiple scattering of Bessel beams propagating in advection fog and radiation fog
Multiple scattering of Bessel beams propagating in advection fog and radiation fog Open
The Bessel beams scattering of the fog particles were calculated by using the plane beams angle spectrum expansion method, and the effects of the topological charge and the half-conic angle of the Bessel beam on the differential scattering…
View article: Evolution of Airy Beams in Turbulence Plasma Sheath
Evolution of Airy Beams in Turbulence Plasma Sheath Open
In order to study the transmission characteristics of Airy beams in the plasma sheath, the flow field around a hypersonic vehicle was numerically simulated and analyzed based on the Navier–Stokes (N-S) equation and a turbulence model. Then…
View article: Eggshell-Derived Copper Calcium Hydroxy Double Salts and Their Activity for Treatment of Highly Polluted Wastewater
Eggshell-Derived Copper Calcium Hydroxy Double Salts and Their Activity for Treatment of Highly Polluted Wastewater Open
By using methyl orange (MO) removal as a model reaction, the best temperatures for processing eggshells are 750 °C and above to obtain biobased CaO materials, a raw material for producing CuCa hydroxy double salt (HDS) materials with high …
View article: An Asymmetrical Mixed Higher-Order Discontinuous Galerkin Time Domain Method for Electromagnetic Scattering from the Plasma Sheath around a Hypersonic Vehicle
An Asymmetrical Mixed Higher-Order Discontinuous Galerkin Time Domain Method for Electromagnetic Scattering from the Plasma Sheath around a Hypersonic Vehicle Open
The plasma sheath during reentry of hypersonic vehicle is an unmagnetized and weakly ionized nonuniform plasma flow, which causes radio frequency blackout and strong plasma attenuation of electromagnetic wave. The physical properties of th…
View article: Fiber Optic Sensing Technology and Vision Sensing Technology for Structural Health Monitoring
Fiber Optic Sensing Technology and Vision Sensing Technology for Structural Health Monitoring Open
Structural health monitoring is currently a crucial measure for the analysis of structural safety. As a structural asset management approach, it can provide a cost-effective measure and has been used successfully in a variety of structures…
View article: Laser-fabricated superhydrophobic/superhydrophilic surfaces on silicon wafer for terahertz spectroscopic detection of aqueous solutions
Laser-fabricated superhydrophobic/superhydrophilic surfaces on silicon wafer for terahertz spectroscopic detection of aqueous solutions Open
Terahertz (THz) spectroscopic detection technology is regarded as an ideal approach for detecting biological substances due to its unique advantages of non-ionization, high penetrability, and fingerprint spectra. However, because of the st…
View article: The Multiple Scattering of Laser Beam Propagation in Advection Fog and Radiation Fog
The Multiple Scattering of Laser Beam Propagation in Advection Fog and Radiation Fog Open
The laser beams were scattered and attenuated when they propagate in fogs for laser communication, laser remote sensing detection. For different density and droplets distribution of fogs, the laser scatter and attenuation are different, th…
View article: Polarization and coherence properties in self-healing propagation of a partially coherent radially polarized twisted beam
Polarization and coherence properties in self-healing propagation of a partially coherent radially polarized twisted beam Open
With the help of generalized Huygens–Fresnel integral, an analytical expression for the self-healing of a partially coherent radially polarized twisted (PCRPT) beam is derived. The coherence and polarization properties of the PCRPT beam in…
View article: Experimental investigation on all-target electromagnetic scattering characteristics of hypervelocity HTV2-like flight model
Experimental investigation on all-target electromagnetic scattering characteristics of hypervelocity HTV2-like flight model Open
According to the requirements for target detection and recognition of hypervelocity vehicles in near space, the simulation and measurement of corresponding electromagnetic scattering characteristics of non-uniform plasma generated by hyper…
View article: The Propagation Properties of a Laguerre–Gaussian Beam in Nonlinear Plasma
The Propagation Properties of a Laguerre–Gaussian Beam in Nonlinear Plasma Open
The self-focusing properties of the Laguerre-Gaussian (LG) beam in nonlinear plasma, characterized by significant collisional or ponderomotive nonlinearity have been explored. The second-order differential equation of the beam width is est…
View article: Theoretical prediction of photophoretic force on a dielectric sphere illuminated by a circularly symmetric high-order Bessel beam: on-axis case
Theoretical prediction of photophoretic force on a dielectric sphere illuminated by a circularly symmetric high-order Bessel beam: on-axis case Open
Compared to the experimental progresses made in the optical trapping of aerosol particles in gaseous media by means of photophoretic forces, the theoretical analysis of photophoretic forces is less developed, the underlying mechanisms bein…
View article: Average Intensity and Beam Quality of Hermite-Gaussian Correlated Schell-Model Beams Propagating in Turbulent Biological Tissue
Average Intensity and Beam Quality of Hermite-Gaussian Correlated Schell-Model Beams Propagating in Turbulent Biological Tissue Open
The propagation characteristics of a Hermite-Gaussian correlated Schell-model (HGCSM) beam in the turbulence of biological tissue are analyzed. The average intensity, spectral degree of coherence, and the dependence of the propagation fact…
View article: Vector Rayleigh Diffraction of High-Power Laser Diode Beam in Optical Communication
Vector Rayleigh Diffraction of High-Power Laser Diode Beam in Optical Communication Open
Laser diodes (LDs) are widely used in optical wireless communication (OWC) and optical networks, and proper theoretical models are needed to precisely describe the complicated beam field of LDs. A novel mathematical model is proposed to de…
View article: Analyzing the electromagnetic scattering characteristics for plasma targets based on shooting and bouncing ray method
Analyzing the electromagnetic scattering characteristics for plasma targets based on shooting and bouncing ray method Open
The analysis of radar target electromagnetic scattering characteristics is the basis of radar target detection, imaging and recognition. The high-frequency algorithm shooting and bouncing ray (SBR) method is used to calculate the radar cro…
View article: Analysis of propagation characteristics of Gaussian beams in turbulent plasma sheaths
Analysis of propagation characteristics of Gaussian beams in turbulent plasma sheaths Open
In this paper, the characteristics of Gaussian beam propagation through turbulent plasma sheath are studied. According to the generalized Huygens-Fresnel principle, the random phase screen is generated by power spectrum inversion method ba…
View article: Generation of Bessel beam sources in FDTD
Generation of Bessel beam sources in FDTD Open
In this paper, a straightforward approach is presented to generate Bessel beam sources in three-dimensional finite-difference time-domain (FDTD) method. Based on the angular spectrum representation (ASR), the incident Bessel beam is descri…
View article: Implementation of nondiffracting Bessel beam sources in FDTD for scattering by complex particles
Implementation of nondiffracting Bessel beam sources in FDTD for scattering by complex particles Open
In this paper, the nondiffracting Bessel beam sources are implemented in finite-difference time-domain (FDTD) method. The high-order scattered-field algorithm of the FDTD (SF-FDTD (2, 4)) method is employed to investigate the scattering of…
View article: Backward Scattering Characteristics of a Reentry Vehicle Enveloped by a Hypersonic Flow Field
Backward Scattering Characteristics of a Reentry Vehicle Enveloped by a Hypersonic Flow Field Open
The hypersonic flow field around a reentry vehicle has a significant influence on the ground-vehicle communication as well as on the detection and recognition of the reentry vehicle. Backward scattering characteristics of a reentry vehicle…