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Article
Open AccessHighly homogeneous zero-index metamaterials make devices more compact and perform better
A highly homogeneous microwave zero-index metamaterial based on high-permittivity SrTiO3 ceramics is demonstrated to realize the small-aperture high-directivity antenna. Such a novel technique is a remarkable ste...
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Chapter and Conference Paper
Two-Stream Spectral-Temporal Denoising Network for End-to-End Robust EEG-Based Emotion Recognition
Emotion recognition based on electroencephalography (EEG) is attracting more and more interest in affective computing. Previous studies have predominantly relied on manually extracted features from EEG signals...
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Article
Shrinking-shifting and amplifying-shifting device using transformation optics
Based on transformation optics (TO), this paper uses geometric divisions and linear coordinate transformations to design “shrinking-shifting—and resha**”, and “amplifying-shifting—and resha**” devices. The...
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Article
Open AccessA metasurface-based light-to-microwave transmitter for hybrid wireless communications
Signal conversion plays an important role in many applications such as communication, sensing, and imaging. Realizing signal conversion between optical and microwave frequencies is a crucial step to construct ...
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Article
An optically driven digital metasurface for programming electromagnetic functions
Metasurfaces are engineered surfaces that consist of subwavelength periodic elements and can be used to manipulate electromagnetic waves. Multifunctional or reconfigurable electromagnetic meta-devices based on...
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Article
Open AccessMonitoring of malaria vectors at the China-Myanmar border while approaching malaria elimination
Tengchong County was one of the counties located at the China-Myanmar border with high malaria incidence in the previous decades. As the pilot county for malaria elimination at the border area, Tengchong Count...
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Article
Open AccessA novel EM concentrator with open-concentrator region based on multi-folded transformation optics
Conventional concentrators with inhomogeneous coating materials that fully enclose the destined region pose great challenges for fabrication. In this paper, we propose to design an EM concentrator with homogen...
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Article
Furan-containing conjugated polymers for organic solar cells
Development of organic semiconductors is one of the most intriguing and productive topics in material science and engineering. Many efforts have been made on the synthesis of aromatic building blocks such as b...
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Article
Open AccessThree-Dimensional Simultaneous Arbitrary-Way Orbital Angular Momentum Generator Based on Transformation Optics
In wireless communications, people utilize the technology of diversity against multipath fading, so as to improve the reliability of communication equipment. One of the long-standing problems in diversity ante...
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Article
Curcumin Attenuated Bupivacaine-Induced Neurotoxicity in SH-SY5Y Cells Via Activation of the Akt Signaling Pathway
Bupivacaine is widely used for regional anesthesia, spinal anesthesia, and pain management. However, bupivacaine could cause neuronal injury. Curcumin, a low molecular weight polyphenol, has a variety of bioac...
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Article
Open AccessAnisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves
Metamaterials based on effective media can be used to produce a number of unusual physical properties (for example, negative refraction and invisibility cloaking) because they can be tailored with effective me...
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Article
Open AccessLeaky-Wave Radiations by Modulating Surface Impedance on Subwavelength Corrugated Metal Structures
One-dimensional (1D) subwavelength corrugated metal structures has been described to support spoof surface plasmon polaritons (SPPs). Here we demonstrate that a periodically modulated 1D subwavelength corrugat...
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Article
Hydroacoustic analysis of open cavity subsonic flow based on multiple parameter numerical models
The prediction of the flow-induced noise level is a key issue in the fluid–dynamic acoustics. In the hydroacoustics field, the complicated feedback induced by the flow past open cavities can amplify the convec...
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Article
Open AccessBroadband diffusion of terahertz waves by multi-bit coding metasurfaces
The terahertz region is a special region of the electromagnetic spectrum that incorporates the advantages of both microwaves and infrared light waves. In the past decade, metamaterials with effective medium pa...
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Article
Open AccessTransmitting information of an object behind the obstacle to infinity
We propose an illusion device that transforms a metallic cylinder into a Luneburg lens by using transformation optics. Such a transformed focusing lens guides electromagnetic waves to propagate around the cent...
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Article
Open AccessIndependent control of differently-polarized waves using anisotropic gradient-index metamaterials
We propose a kind of anisotropic gradient-index (GRIN) metamaterials, which can be used to control differently-polarized waves independently. We show that two three- dimensional (3D) planar lenses made of such...
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Article
Open AccessEnhancement of Current Density by dc Electric Concentrator
We investigate a dc electric concentrator for steady current fields theoretically and experimentally. Based on the transformation electrostatics, we show that the dc concentrator can focus electric currents in...
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Article
Diagonal form fast multipole boundary element method for 2D acoustic problems based on Burton-Miller boundary integral equation formulation and its applications
This paper describes formulation and implementation of the fast multipole boundary element method (FMBEM) for 2D acoustic problems. The kernel function expansion theory is summarized, and four building blocks ...
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Article
Beam deflection and splitting using transformation optics
We propose a scheme to achieve beam defecting and splitting using a method of embedded coordinate transformation [1]. In this method one boundary of transformation region is not involved in the transformation,...
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Article
Analysis of numerical integration error for Bessel integral identity in fast multipole method for 2D Helmholtz equation
In 2D fast multipole method for scattering problems, square quadrature rule is used to discretize the Bessel integral identity for diagonal expansion of 2D Helmholtz kernel, and numerical integration error is ...
