Reflection (computer programming)
View article
Intelligent Reflecting Surface-Aided Wireless Communications: A Tutorial Open
Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal propagation in wireless networks. By smartly tuning the signal reflection via a large number of low-cost passive reflecting elements, IRS is capabl…
View article
Wireless Communications With Reconfigurable Intelligent Surface: Path Loss Modeling and Experimental Measurement Open
Reconfigurable intelligent surfaces (RISs) comprised of tunable unit cells\nhave recently drawn significant attention due to their superior capability in\nmanipulating electromagnetic waves. In particular, RIS-assisted wireless\ncommunicat…
View article
Reflection-Symmetric Second-Order Topological Insulators and Superconductors Open
Second-order topological insulators are crystalline insulators with a gapped bulk and gapped crystalline boundaries, but with topologically protected gapless states at the intersection of two boundaries. Without further spatial symmetries,…
View article
Simulation-Based Learning in Higher Education: A Meta-Analysis Open
Simulation-based learning offers a wide range of opportunities to practice complex skills in higher education and to implement different types of scaffolding to facilitate effective learning. This meta-analysis includes 145 empirical studi…
View article
STAR: Simultaneous Transmission and Reflection for 360° Coverage by Intelligent Surfaces Open
A novel simultaneously transmitting and reflecting (STAR) system design\nrelying on reconfigurable intelligent surfaces (RISs) is conceived. First, an\nexisting prototype is reviewed and the potential benefits of STAR-RISs are\ndiscussed. …
View article
Perfect control of reflection and refraction using spatially dispersive metasurfaces Open
[EN] \nNonuniform metasurfaces (electrically thin composite layers) can be used for shaping refracted and reflected electromagnetic waves. However, known design approaches based on the generalized refraction and reflection laws do not allo…
View article
From the generalized reflection law to the realization of perfect anomalous reflectors Open
Nonlocal metasurface for perfect anomalous reflection demonstrates a new possibility for controlling electromagnetic energy flow.
View article
Intelligent Reflecting Surface Aided Multigroup Multicast MISO Communication Systems Open
Intelligent reflecting surface (IRS) has recently been envisioned to offer\nunprecedented massive multiple-input multiple-output (MIMO)-like gains by\ndeploying large-scale and low-cost passive reflection elements. By adjusting\nthe reflec…
View article
Reflection on whether Chat GPT should be banned by academia from the perspective of education and teaching Open
OPINION article Front. Psychol., 01 June 2023Sec. Educational Psychology Volume 14 - 2023 | https://doi.org/10.3389/fpsyg.2023.1181712
View article
Synthesis of Passive Lossless Metasurfaces Using Auxiliary Fields for Reflectionless Beam Splitting and Perfect Reflection Open
We introduce a paradigm for accurate design of metasurfaces for intricate beam manipulation, implementing functionalities previously considered impossible to achieve with passive lossless elements. The key concept involves self-generation …
View article
Clarification of basic concepts for electromagnetic interference shielding effectiveness Open
There exists serious miscomprehension in the open literature about the electromagnetic interference shielding effectiveness (EMI SE) as a critical index to evaluate the shielding performance, which is misleading to the graduates and newcom…
View article
Achievable Rate Maximization by Passive Intelligent Mirrors Open
This paper investigates the use of a Passive Intelligent Mirrors (PIM) to operate a multi-user MISO downlink communication. The transmit powers and the mirror reflection coefficients are designed for sum-rate maximization subject to indivi…
View article
Colored and paintable bilayer coatings with high solar-infrared reflectance for efficient cooling Open
A simple, inexpensive, and paintable bilayer coating approach enables both color and efficient cooling.
View article
Teaching and learning process to enhance teaching effectiveness: literature review Open
Teaching and learning process can be defined as a transformation process of knowledge from teachers to students. It is referred as the combination of various elements within the process where an educator identifies and establish the learni…
View article
Second Harmonic and Sum-Frequency Generation from Aqueous Interfaces Is Modulated by Interference Open
The interfacial region of aqueous systems also known as the electrical double layer can be characterized on the molecular level with second harmonic and sum-frequency generation (SHG/SFG). SHG and SFG are surface specific methods for isotr…
View article
Generalized Spatial Differentiation from the Spin Hall Effect of Light and Its Application in Image Processing of Edge Detection Open
Optics naturally provides us with some powerful mathematical operations. Here\nwe experimentally demonstrate that during reflection or refraction at a single\noptical planar interface, the optical computing of spatial differentiation can\n…
View article
Models of disability: A brief overview Open
Critical reflection on the importance of shaping disability-friendly – or disability-inclusive – congregations has enjoyed increasing attention in the field of practical theology in recent years. Moreover, the development of disability the…
View article
Reflection on modern methods: Revisiting the area under the ROC Curve Open
The area under the receiver operating characteristic (ROC) curve (AUC) is commonly used for assessing the discriminative ability of prediction models even though the measure is criticized for being clinically irrelevant and lacking an intu…
View article
Speculative futures on ChatGPT and generative artificial intelligence (AI): A collective reflection from the educational landscape Open
While ChatGPT has recently become very popular, AI has a long history and philosophy. This paper intends to explore the promises and pitfalls of the Generative Pre-trained Transformer (GPT) AI and potentially future technologies by adoptin…
View article
The Transnational and the Text-Searchable: Digitized Sources and the Shadows They Cast Open
This essay explores the consequences for historians’ research of the twinned transnational and digitized turns. The accelerating digitization of primary and secondary sources and the rise of full-text web-based search to access information…
View article
The Sign of Three: Dupin, Holmes, Peirce Open
... fascinating throughout.... the book is recreative in the highest sense. --Arthur C. Danto, The New RepublicA gem for Holmes fans and armchair detectives with a penchant for logical reflection, and Peirce scholars. --Library Journal
View article
Electrically Tunable Metasurface with Independent Frequency and Amplitude Modulations Open
Metasurfaces with actively tunable features are highly demanded for advanced applications in electronic and electromagnetic systems. However, realizing independent dual-tunability remains challenging and requires more efforts. Here, we pre…
View article
Carbon‐Based Radar Absorbing Materials toward Stealth Technologies Open
Stealth technology is used to enhance the survival of military equipment in the field of military surveillance, as it utilizes a combination of techniques to render itself undetectable by enemy radar systems. Radar absorbing materials (RAM…
View article
Engineered metabarrier as shield from seismic surface waves Open
Resonant metamaterials have been proposed to reflect or redirect elastic waves at different length scales, ranging from thermal vibrations to seismic excitation. However, for seismic excitation, where energy is mostly carried by surface wa…
View article
Thermo‐Optically Designed Scalable Photonic Films with High Thermal Conductivity for Subambient and Above‐Ambient Radiative Cooling Open
Radiative cooling is a promising passive cooling technology that reflects sunlight and emits heat to deep space without any energy consumption. Current research mainly focuses on cooling non‐heat‐generating objects (e.g., water) to a deep …
View article
Designing nanophotonic structures using conditional deep convolutional generative adversarial networks Open
Data-driven design approaches based on deep learning have been introduced in nanophotonics to reduce time-consuming iterative simulations, which have been a major challenge. Here, we report the first use of conditional deep convolutional g…
View article
Ti<sub>3</sub>C<sub>2</sub>MXene: a promising microwave absorbing material Open
A novel microwave absorbing material with Ti3C2MXene nanosheets.
View article
Anisotropic 2D Materials for Tunable Hyperbolic Plasmonics Open
Motivated by the recent emergence of a new class of anisotropic 2D materials, we examine their electromagnetic modes and demonstrate that a broad class of the materials can host highly directional hyperbolic plasmons. Their propagation dir…
View article
Electronically Tunable Perfect Absorption in Graphene Open
The demand for dynamically tunable light modulation in flat optics applications has grown in recent years. Graphene nanostructures have been extensively studied as means of creating large effective index tunability, motivated by theoretica…
View article
Cooperative Double-IRS Aided Communication: Beamforming Design and Power Scaling Open
Intelligent reflecting surface (IRS) is a promising technology to support high performance wireless communication. By adaptively configuring the reflection amplitude and/or phase of each passive reflecting element on it, the IRS can reshap…