Zi-Yu Chen
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View article: High-charge relativistic electrons by vacuum laser acceleration from plasma mirrors using flying focus pulses
High-charge relativistic electrons by vacuum laser acceleration from plasma mirrors using flying focus pulses Open
Relativistic electron beams produced by intense lasers over short distances have important applications in high energy density physics and medical technologies. Vacuum laser acceleration with plasma mirrors asinjectors has garnered substan…
View article: Generation of relativistic Bessel-Gaussian beams by conical plasma mirrors
Generation of relativistic Bessel-Gaussian beams by conical plasma mirrors Open
Relativistically intense Bessel-Gaussian beams hold significant promise for high-intensity laser-plasma interactions, yet an effective method for their generation remains unexplored. Here we numerically demonstrate the direct generation of…
View article: Regional disparities in marine carbon sink development in china: From an opportunity inequality perspective
Regional disparities in marine carbon sink development in china: From an opportunity inequality perspective Open
View article: Non-Periodic Reconstruction from Sub-Sampled Velocity Measurement Data Based on Data-Fusion Compressed Sensing
Non-Periodic Reconstruction from Sub-Sampled Velocity Measurement Data Based on Data-Fusion Compressed Sensing Open
Compressive sensing (CS) is capable of resolving high frequencies from subsampled data. However, it is challenging to apply CS in non-periodic flow fields with multiple frequencies. This study introduces a novel data fusion CS approach aim…
View article: Lattice-Hopping: A Novel Map-Representation-Based Path Planning Algorithm for a High-Density Storage System
Lattice-Hopping: A Novel Map-Representation-Based Path Planning Algorithm for a High-Density Storage System Open
Optimal path planning algorithms offer substantial benefits in high-density storage (HDS) systems in modern smart manufacturing. However, traditional algorithms may encounter significant optimization challenges due to intricate architectur…
View article: Transforming waste into value: High-performance hollow fiber adsorbents from municipal solid waste incinerator bottom ash
Transforming waste into value: High-performance hollow fiber adsorbents from municipal solid waste incinerator bottom ash Open
This study pioneers a novel approach to valorize municipal solid waste incinerator bottom ash (IBA) by synthesizing high-performance hollow fiber adsorbents. A combined phase inversion and sintering method was employed, systematically inve…
View article: Plasma-state metasurfaces for ultra-intensive field manipulation
Plasma-state metasurfaces for ultra-intensive field manipulation Open
High-power lasers offer ultrahigh intensities for plasma interactions, but they lack advanced techniques to control the properties of the fields, because no optical elements could withstand their high intensities. The vibrant field of meta…
View article: The Structure and Influencing Mechanisms of the Global Palm Oil Trade: A Complex Network Perspective
The Structure and Influencing Mechanisms of the Global Palm Oil Trade: A Complex Network Perspective Open
Against the backdrop of rapid growth in the food processing and biofuel industries across many countries, the global palm oil market has become a critical component of international agricultural trade. This study analyzes the evolution of …
View article: Enhancing absorption efficiency by incorporating hollow titanium particles in perovskite solar cells
Enhancing absorption efficiency by incorporating hollow titanium particles in perovskite solar cells Open
View article: Analysis of Regional Disparities in Marine Carbon Sink Development in China: A Perspective from Opportunity Inequality Theory
Analysis of Regional Disparities in Marine Carbon Sink Development in China: A Perspective from Opportunity Inequality Theory Open
View article: Efficient Based on Improved Random Forest Defense System Against Application‐Layer DDoS Attacks
Efficient Based on Improved Random Forest Defense System Against Application‐Layer DDoS Attacks Open
Application‐layer distributed denial of service (DDoS) attacks have become the main threat to Web server security. Because application‐layer DDoS attacks have strong concealability and high authenticity, intrusion detection technologies th…
View article: High-harmonic generation in CdTe with ultra-low pump intensity and high photon flux
High-harmonic generation in CdTe with ultra-low pump intensity and high photon flux Open
An ultra-low pump intensity and high photon flux have been long pursuits of high harmonic generation (HHG) in solids. However, there is lack of a criterion to identify a pristine solid material exhibiting such characteristics. Here, we rep…
View article: Realization of Forest Internet of Things Using Wireless Network Communication Technology of Low-Power Wide-Area Network
Realization of Forest Internet of Things Using Wireless Network Communication Technology of Low-Power Wide-Area Network Open
This work implements an intelligent forest monitoring system using the Internet of things (IoT) with the wireless network communication technology of a low-power wide-area network (LPWAN), a long range (LoRa), and a narrow-band Internet of…
View article: Dual-Wavelength Spectrum-Shaped Mid-Infrared Pulses and Steering High-Harmonic Generation in Solids
Dual-Wavelength Spectrum-Shaped Mid-Infrared Pulses and Steering High-Harmonic Generation in Solids Open
Mid-infrared (MIR) ultra-short pulses with multiple spectral-band coverage and good freedom in spectral and temporal shaping are desired by broad applications such as steering strong-field ionization, investigating bound-electron dynamics,…
View article: High-harmonic generation in polycrystalline CdTe nano-films via macroscopic investigations
High-harmonic generation in polycrystalline CdTe nano-films via macroscopic investigations Open
Bright high harmonics generation (HHG) in CMOS-compatible nano-films can provide new opportunities for integrated coherent ultra-violet sources and attosecond photonic devices. Up to now, most HHG studies have been limited to single crysta…
View article: High-harmonic generation in polycrystalline CdTe nano-films via macroscopic investigations
High-harmonic generation in polycrystalline CdTe nano-films via macroscopic investigations Open
Bright high harmonics generation (HHG) in CMOS-compatible nano-films can provide new opportunities for integrated coherent ultra-violet sources and attosecond photonic devices. Up to now, most HHG studies have been limited to single crysta…
View article: High-harmonic generation with ultra-low threshold and extraordinary photon flux in CdTe
High-harmonic generation with ultra-low threshold and extraordinary photon flux in CdTe Open
An ultra-low pump threshold and high photon flux have been long pursuits of high harmonic generation (HHG) in solids, which would benefit various applications such as attosecond generation, ultrafast electron dynamics studies, extreme ultr…
View article: Intense high-order harmonic vector beams from relativistic plasma mirrors
Intense high-order harmonic vector beams from relativistic plasma mirrors Open
Vector beam, with a spatial nonuniform polarization distribution, is\nimportant for many applications due to its unique field characteristics and\nnovel effects when interacting with matter. Here through three-dimensional\nparticle-in-cell…
View article: Design of polarization-insensitive 1×2 directional coupler demultiplexer based on sandwiched structure
Design of polarization-insensitive 1×2 directional coupler demultiplexer based on sandwiched structure Open
An ultra-compact 1×2 demultiplexer based on directional coupler (DC) waveguide is proposed to separate the 1310 nm wavelength from 1550 nm wavelength, in which a new Si3N4/SiNx/Si3N4<…
View article: Probing structural chirality of crystals using high-order harmonic generation in solids
Probing structural chirality of crystals using high-order harmonic generation in solids Open
Structural chirality plays an important role in solid state physics and leads to a variety of novel physics. The feasibility of probing structural chirality of crystals using high harmonic generation in solids is explored in this work. Thr…
View article: Design of polarization-insensitive 1 × 2 multimode interference demultiplexer based on Si<sub>3</sub>N<sub>4</sub>/SiN<sub>x</sub>/Si<sub>3</sub>N<sub>4</sub> sandwiched structure
Design of polarization-insensitive 1 × 2 multimode interference demultiplexer based on Si<sub>3</sub>N<sub>4</sub>/SiN<sub>x</sub>/Si<sub>3</sub>N<sub>4</sub> sandwiched structure Open
An ultra-compact 1 × 2 demultiplexer based on multimode interference (MMI) waveguide is proposed to separate the 1310 nm and 1550 nm wavelengths, in which Si3N4/SiNx/Si3N4 sandw…
View article: High harmonic generation in graphene–boron nitride heterostructures
High harmonic generation in graphene–boron nitride heterostructures Open
High harmonic generation and enhancement by tuning the interlayer separation in two-dimensional van der Waals heterostructures are investigated.
View article: Superior strong-field optical properties of monolayer black phosphorus
Superior strong-field optical properties of monolayer black phosphorus Open
With the past few years, atomically thin black phosphorus (BP) has been demonstrated as a fascinating new 2D material that is promising for novel nanoelectronics and nanophotonics applications, due to its many unique properties such as dir…
View article: Circularly polarized extreme ultraviolet high harmonic generation in graphene
Circularly polarized extreme ultraviolet high harmonic generation in graphene Open
Circularly polarized extreme ultraviolet (XUV) radiation is highly interesting for investigation of chirality-sensitive light-matter interactions. Recent breakthroughs have enabled the generation of such light sources via high harmonic gen…
View article: Strong-field nonlinear optical properties of monolayer black phosphorus
Strong-field nonlinear optical properties of monolayer black phosphorus Open
First-principles studies demonstrate two-dimensional black phosphorus exhibiting remarkable strong-field extreme nonlinear optical properties.
View article: Strain-controlled high harmonic generation in two-dimensional materials with Dirac fermions
Strain-controlled high harmonic generation in two-dimensional materials with Dirac fermions Open
Two-dimensional (2D) materials with zero band gap exhibit remarkable electronic properties with wide tunability. High harmonic generation (HHG) in such materials offers unique platforms to develop electronic-engineered novel optoelectronic…
View article: Spectral control of high harmonics from relativistic plasmas using bicircular fields
Spectral control of high harmonics from relativistic plasmas using bicircular fields Open
We introduce two-color counterrotating circularly polarized laser fields as a way to spectrally control high harmonic generation (HHG) from relativistic plasma mirrors. Through particle-in-cell simulations, we show that only a selected gro…
View article: Isolated elliptically polarized attosecond soft X-ray with high-brilliance using polarization gating of harmonics from relativistic plasmas at oblique incidence
Isolated elliptically polarized attosecond soft X-ray with high-brilliance using polarization gating of harmonics from relativistic plasmas at oblique incidence Open
The production of intense isolated attosecond pulse is a major goal in ultrafast research. Recent advances in high harmonic generation from relativistic plasma mirrors under oblique incidence interactions gave rise to photon-rich attosecon…
View article: Hot-electron refluxing enhanced relativistic transparency of overdense plasmas
Hot-electron refluxing enhanced relativistic transparency of overdense plasmas Open
A new phenomenon of an enhanced relativistic transparency of overdense plasmas by the influence of hot-electron refluxing has been discovered via particle-in-cell simulations. When a p-polarized laser pulse, with intensity below the self-i…
View article: Bright high-order harmonic generation with controllable polarization from a relativistic plasma mirror
Bright high-order harmonic generation with controllable polarization from a relativistic plasma mirror Open
Ultrafast extreme ultraviolet (XUV) sources with a controllable polarization state are powerful tools for investigating the structural and electronic as well as the magnetic properties of materials. However, such light sources are still li…