Shaobin Liu
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View article: Ultrawideband Scattering Reduction of Tightly Coupled Dipole Array With Wideband Absorber
Ultrawideband Scattering Reduction of Tightly Coupled Dipole Array With Wideband Absorber Open
In this letter, a low scattering ultrawideband tightly coupled dipole array (TCDA) based on the wideband absorber is proposed in this paper. The absorber consists of I‐shaped metal strips loaded with resistors. Transverse metal strips are …
View article: A single beam-driven dual-band transit-time oscillator based on harmonic operation
A single beam-driven dual-band transit-time oscillator based on harmonic operation Open
Dual-band high-power microwave (HPM) sources, combining the distinct advantages of different frequencies (e.g., penetration depth, energy deposition efficiency, and target coupling), are highly valuable for military, industrial, and scient…
View article: Achieving ultra-broadband thin microwave absorber by synthesizing all-dielectric and metal-based metamaterials
Achieving ultra-broadband thin microwave absorber by synthesizing all-dielectric and metal-based metamaterials Open
Metamaterial absorbers (MMAs) have been widely investigated in recent years. The synthesis of traditional metal-based MMAs and new-kind all-dielectric MMAs has great potential in improving absorption performances, which has not yet been un…
View article: A gigawatt Ka-band relativistic backward-wave oscillator with an internal resonant output
A gigawatt Ka-band relativistic backward-wave oscillator with an internal resonant output Open
The millimeter wave (such as Ka-band) relativistic backward wave oscillator (RBWO) operating at gigawatt power is contemporary pivotal due to the high vulnerability of vacuum breakdown in compact device size. This paper proposes an interna…
View article: Dual‐Polarized Frequency Selective Rasorber With Quasi‐Elliptic Bandpass Response
Dual‐Polarized Frequency Selective Rasorber With Quasi‐Elliptic Bandpass Response Open
In this paper, a dual‐polarized frequency selective surface (FSS) capable of exhibiting a wide quasi‐elliptic bandpass response is presented, analyzed, and then applied to the frequency selective rasorber (FSR) design. Three transmission p…
View article: Enhancing low-frequency performance of thin-layer magnetic microwave absorbing materials via phase gradient metasurface
Enhancing low-frequency performance of thin-layer magnetic microwave absorbing materials via phase gradient metasurface Open
Magnetic composites are the most widely-used microwave absorbing materials (MAMs), but for low-frequency absorption, their heavy weight caused by the increasing thickness has always been the major drawback. Recently, the flexible manipulat…
View article: A Wideband Eight-Port MIMO Antenna with Reduced Mutual Coupling for Future 5G mm-Wave Applications
A Wideband Eight-Port MIMO Antenna with Reduced Mutual Coupling for Future 5G mm-Wave Applications Open
An eight-element MIMO antenna with a neutralization line was utilized for future 5G mm-wave applications. The MIMO configuration was designed for two ports, four ports and eight ports to validate the desired impedance and radiation charact…
View article: Reciprocity quad-band electromagnetically induced transparency-like metamaterials
Reciprocity quad-band electromagnetically induced transparency-like metamaterials Open
In this paper, a sandwich structure metamaterial was designed, in which the substrate is radio frequency (RF) F4B, and the metal pattern of copper is prepared by the substrate on both sides. Analyzed the transmission of the structure, and …
View article: A Study on the Shape of Parabolic Aeration Facilities with Local Steepness in Slow Slope Chutes
A Study on the Shape of Parabolic Aeration Facilities with Local Steepness in Slow Slope Chutes Open
For flood discharge structures with high water heads, aeration facilities are usually installed in engineering to promote water flow aeration and prevent cavitation damage to the overflow surface. Actual engineering has shown that as the s…
View article: Ultra-wideband Terahertz Absorber Based on E Shape Graphene Pattern
Ultra-wideband Terahertz Absorber Based on E Shape Graphene Pattern Open
We present a tunable ultra-wideband (UWB) absorber based on a multilayer of “E” shaped graphene patterns. The numerically calculated results indicate that the absorption of the proposed design is above 95% in the range of 1.12 to 14.04 THz…
View article: A 2.5D Broadband Non-Reciprocal Metasurface Based on Aperture-Coupled Feed Structures
A 2.5D Broadband Non-Reciprocal Metasurface Based on Aperture-Coupled Feed Structures Open
In traditional non-reciprocal metasurfaces based on antenna-circuit-antenna structure, the radiation module and the non-reciprocal circuit module are coplanar, which occupies extra surface area and has the inherent defect of narrow operati…
View article: Teaching Reform to the Biology Major During the COVID-19 Pandemic: A Study of the Method of Teaching Industrial Innovation and Entrepreneurial Talents
Teaching Reform to the Biology Major During the COVID-19 Pandemic: A Study of the Method of Teaching Industrial Innovation and Entrepreneurial Talents Open
The biology major has developed rapidly in recent years. Biology is a science that penetrates every aspect of human life and is one of the core majors in most agricultural colleges and universities. However, many teachers lack practical ex…
View article: Miniaturized Wide-Angle Rasorber With a Wide Interabsorption High Transparent Bandpass Based on Multiple 2.5-D Resonators
Miniaturized Wide-Angle Rasorber With a Wide Interabsorption High Transparent Bandpass Based on Multiple 2.5-D Resonators Open
A miniaturized high selectivity Frequency Selective Rasorber (FSR) with a wide inter-absorption high transparent bandpass based on multiple 2.5-Dimensional (2.5-D) resonators is investigated. The main contribution is the achievement of a w…
View article: Gain Enhancement Planar Lens Antenna based on Wideband Focusing Gradient Meta-surface
Gain Enhancement Planar Lens Antenna based on Wideband Focusing Gradient Meta-surface Open
A three-layered transmitting focusing gradient meta-surface (FGMS) has been proposed, which can achieve broadband gain enhancement from 8.2 GHz to 10 GHz. The element of broadband transmitting FGMS has high transmitting efficiencies that o…
View article: Investigations and prospects of Fabry-Perot antennas: A review
Investigations and prospects of Fabry-Perot antennas: A review Open
Fabry-Perot (FP) antennas have characteristics of planar structures combined with high gain, and they have been widely used in wireless communications. With the progress of ongoing research, FP antennas have achieved various capabilities, …
View article: Hybrid Cloud Networking Design Based on Openstack Architecture
Hybrid Cloud Networking Design Based on Openstack Architecture Open
With the continuous increase of equipment and traffic, network development is facing a series of problems: complex management and operation and high cost, slow deployment and deployment of new services, lack of flexibility in traffic sched…
View article: A SIW Horn Antenna without Broad Wall Loaded with Trapezoidal Air Slot
A SIW Horn Antenna without Broad Wall Loaded with Trapezoidal Air Slot Open
In this paper, a SIW horn antenna without broad wall loaded with trapezoidal air slot is proposed, processed, and tested. Based on the SIW horn antenna, this antenna strips off the wide wall at the horn diameter, introduces surface waves o…
View article: <p>Zeaxanthin Induces Apoptosis via ROS-Regulated MAPK and AKT Signaling Pathway in Human Gastric Cancer Cells</p>
Zeaxanthin Induces Apoptosis via ROS-Regulated MAPK and AKT Signaling Pathway in Human Gastric Cancer Cells Open
Zeaxanthin has a potential effect against gastric cancer cells through the ROS-mediated MAPK, AKT, NF-κB, and STAT3 signaling pathways, and it is expected to become a new drug for the treatment of human gastric cancer.
View article: A Dual-Polarized Printed Antenna Based on a Tapered Slot SICL Balun for Airborne Radar Application
A Dual-Polarized Printed Antenna Based on a Tapered Slot SICL Balun for Airborne Radar Application Open
The substrate-integrated coaxial line (SICL) is a potential transmission line due to its good characteristics of high efficiency, nondispersive, and single operational mode. A tapered slot SICL balun is proposed, which can realize the impe…
View article: A Low-RCS, High-GBP Fabry–Perot Antenna With Embedded Chessboard Polarization Conversion Metasurface
A Low-RCS, High-GBP Fabry–Perot Antenna With Embedded Chessboard Polarization Conversion Metasurface Open
AFabry Perot (FP) antenna with high gain-bandwidth product (GBP) and wideband radar cross
\nsection (RCS) reduction is proposed using an embedded chessboard polarization conversion metasurface
\n(CPCM). A polarization conversion metasurfac…
View article: 10‐HDA Induces ROS‐Mediated Apoptosis in A549 Human Lung Cancer Cells by Regulating the MAPK, STAT3, NF‐<i>κ</i>B, and TGF‐<i>β</i>1 Signaling Pathways
10‐HDA Induces ROS‐Mediated Apoptosis in A549 Human Lung Cancer Cells by Regulating the MAPK, STAT3, NF‐<i>κ</i>B, and TGF‐<i>β</i>1 Signaling Pathways Open
10‐Hydroxy‐2‐decenoic acid (10‐HDA), also known as royal jelly acid, has a variety of physiological functions, and recent studies have shown that it also has anticancer effects. However, its anticancer mechanisms have not been clearly defi…
View article: A Multifuntional Frequency-selective Polarization Converter for broadband backward-scattering reduction
A Multifuntional Frequency-selective Polarization Converter for broadband backward-scattering reduction Open
In this paper, we combine the design of band-pass frequency selective surfaces (FSSs) with polarization converters to realize a broadband frequency-selective polarization converter (FSPC) with lowbackward scattering, which consists of the …
View article: Broadband vortex beam generating for multi‐polarisations based on a single‐layer quasi‐spiral metasurface
Broadband vortex beam generating for multi‐polarisations based on a single‐layer quasi‐spiral metasurface Open
A reflective metasurface based on the quasi‐spiral element is proposed to achieve broadband orbital angular momentum vortex beams for multi‐polarisations. The quasi‐spiral element can provide linear and smooth phase responses covering abou…
View article: Flexible broadband polarization converter based on metasurface at microwave band*
Flexible broadband polarization converter based on metasurface at microwave band* Open
A flexible broadband linear polarization converter is proposed based on the metasurface operating at microwave band. To achieve bandwidth extension property, long and short metallic arc wires, as well as the metallic disks placed over a gr…
View article: Asymmetric transmission and absorption generated with three-dimensional metamaterials at oblique incidence
Asymmetric transmission and absorption generated with three-dimensional metamaterials at oblique incidence Open
A novel metamaterial device with simultaneous asymmetric transmission and absorption has been proposed. The proposed device is made of two artificial metallo-dielectric layers which are perpendicular to each other. The three-dimensional st…
View article: Flux and Passage Enhancement in Hemodialysis by Incorporating Compound Additive into PVDF Polymer Matrix
Flux and Passage Enhancement in Hemodialysis by Incorporating Compound Additive into PVDF Polymer Matrix Open
In this study, Polyvinylidene fluoride (PVDF) hollow fiber hemodialysis membranes were prepared by non-solvent induced phase separation (NIPS) with compound addtive. The compound additive was made with polyvinyl pyrrolidone (PVP) and Poly …
View article: Analyzing the photonic band gaps in two-dimensional plasma photonic crystals with fractal Sierpinski gasket structure based on the Monte Carlo method
Analyzing the photonic band gaps in two-dimensional plasma photonic crystals with fractal Sierpinski gasket structure based on the Monte Carlo method Open
In this paper, the properties of photonic band gaps (PBGs) in two types of two-dimensional plasma-dielectric photonic crystals (2D PPCs) under a transverse-magnetic (TM) wave are theoretically investigated by a modified plane wave expansio…
View article: Comment on “Size-efficient metamaterial absorber at low frequencies: Design, fabrication, and characterization” [J. Appl. Phys. <b>117</b>, 243105 (2015)]
Comment on “Size-efficient metamaterial absorber at low frequencies: Design, fabrication, and characterization” [J. Appl. Phys. <b>117</b>, 243105 (2015)] Open
In a recent article, Khuyen et al. [J. Appl. Phys. 117, 243105 (2015)] proposed a metamaterial perfect absorber (MPA) with a self-asymmetric structure and claimed that it could produce dual-band “perfect absorption.” In this report, we dem…
View article: Tailoring electromagnetically induced transparency with different coupling mechanisms
Tailoring electromagnetically induced transparency with different coupling mechanisms Open
Tailoring electromagnetically induced transparency with two different coupling mechanisms has been numerically demonstrated. The results show that EIT based on simultaneous electric resonance and magnetic resonance has relatively larger co…