Results 71 to 80 of about 33,386 (301)
Design of a Direction-of-Arrival Estimation Method Used for an Automatic Bearing Tracking System
Sensors, 2016 In this paper, we introduce a sub-band direction-of-arrival (DOA) estimation method suitable for employment within an automatic bearing tracking system. Inspired by the magnitude-squared coherence (MSC), we extend the MSC to the sub-band and propose the ...
Feng Guo +6 more
doaj +1 more source
Advanced Science, EarlyView.Designed and demonstrated a flexible metamaterial absorber via loss engineering for large‐area ultra‐broadband infrared extinction, providing a new method for miniaturization of absorbers and flexible optical devices. ABSTRACT The advancement of compact and wearable optical systems is critically limited by the lack of high‐performance, integrable ...
Zhe Wu +11 more
wiley +1 more source
Electromagnetic Radiation Stimulated Learning in Perovskite Nickelates
Advanced Science, EarlyView.ABSTRACT Biological plasticity refers to the ability of synapses to strengthen or weaken over time. These adaptive properties play a fundamental role in learning and memory, spanning many orders of magnitude in timescales. Short‐term plasticity (STP) arises from rapid correlative activity, while long‐term plasticity (LTP) is governed by slower ...
Ranjan Kumar Patel +8 more
wiley +1 more source
Donor Extended Blue TADF Dendrimer for High‐Performance Solution‐Processed OLEDs
Advanced Science, EarlyView.A dendronized MR‐TADF emitter, DOBNA‐SpAc‐DCz, was designed to improve solubility, hole transport, and exciton dynamics for solution‐processed OLEDs. Incorporation of ter(tert‐butylcarbazole) dendrons decreases ΔEST and accelerates RISC, yielding short delayed lifetimes (∼2 µs).
Mahni Fatahi +4 more
wiley +1 more source
The Fast and Reliable Detection of Multiple Narrowband FH Signals: A Practical Framework
SensorsFrequency hopping (FH) is a well-known technique that is commonly used in communication systems owing to its many advantages, including its strong anti-jamming capability.
Mutlu Aydin +3 more
doaj +1 more source
Different from traditional organic luminescent materials based on covalent delocalization, clusteroluminescence (CL) from nonconjugated luminogens relies on noncovalent through-space conjugation (TSC) of electrons.
Lei, Wang +8 more
core +1 more source
Advanced Electronic Materials, EarlyView.This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley +1 more source
Improving Passband Characteristics in Chebyshev Sharpened Comb Decimation Filters
Applied SciencesThis work presents the design of optimal and multiplierless compensators for Chebyshev sharpened comb decimation filters. The narrowband and wideband compensators are proposed.
Gordana Jovanovic Dolecek +1 more
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Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective
Advanced Electronic Materials, EarlyView.Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe +4 more
wiley +1 more source
Mapping plant nitrogen concentration within Luvuvhu River Catchment using Sentinel-2 imagery
Frontiers in Environmental SciencePlant nitrogen (N) estimation using real-time and non-convection methods is very crucial for ecosystem management. This study aimed at estimating plant N concentration of indigenous vegetation in Luvuvhu River Catchment (LRC) using both field and ...
Unarine E. Tshishonga, Oupa E. Malahlela
doaj +1 more source