Results 101 to 110 of about 418,956 (371)
Freeform Phononic Waveguides [PDF]
Crystals, 2017 We employ a recently introduced class of artificial structurally-disordered phononic structures that exhibit large and robust elastic frequency band gaps for efficient phonon guiding. Phononic crystals are periodic structures that prohibit the propagation of elastic waves through destructive interference and exhibit large band gaps and ballistic ...
Georgios Gkantzounis, Marian Florescu
openaire +6 more sources
Carbon Nanotube 3D Integrated Circuits: From Design to Applications
Advanced Functional Materials, EarlyView.As Moore's law approaches its physical limits, carbon nanotube (CNT) 3D integrated circuits (ICs) emerge as a promising alternative due to the miniaturization, high mobility, and low power consumption. CNT 3D ICs in optoelectronics, memory, and monolithic ICs are reviewed while addressing challenges in fabrication, design, and integration.
Han‐Yang Liu +3 more
wiley +1 more source
Efficient Photonic Crystal Cavity-Waveguide Couplers [PDF]
, 2006 Coupling of photonic crystal (PC) linear three-hole defect cavities (L3) to PC waveguides is theoretically and experimentally investigated. The systems are designed to increase the overlap between the evanescent cavity field and the waveguide mode, and to operate in the linear dispersion region of the waveguide.
arxiv +1 more source
Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications
Advanced Functional Materials, EarlyView.Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai +8 more
wiley +1 more source
Long Low-Loss-Litium Niobate on Insulator Waveguides with Sub-Nanometer Surface Roughness
Nanomaterials, 2018 In this paper, we develop a technique for realizing multi-centimeter-long lithium niobate on insulator (LNOI) waveguides with a propagation loss as low as 0.027 dB/cm.
Rongbo Wu +11 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Electrically conductive and room temperature magnetic atomically thin (≈0.8 nm) vanadium doped MoS2 (V‐MoS2) is demonstrated for its spintronic applications. Here, the spin transport at the interface of permalloy (Py) and high spin‐orbit coupling V‐MoS2 magnetic monolayers is shown.
Krishna Rani Sahoo +8 more
wiley +1 more source
Silicon Meets Graphene for a New Family of Near-Infrared Schottky Photodetectors
Applied Sciences, 2019 In recent years, graphene has attracted much interest due to its unique properties of flexibility, strong light-matter interaction, high carrier mobility and broadband absorption.
Maurizio Casalino
doaj +1 more source
Advanced Functional Materials, EarlyView.This study presents a novel donor‐bridge‐acceptor‐bridge‐donor (D‐B‐A‐B‐D) molecular system, which shows near‐unity intramolecular excitation energy transfer (IET) from two identical energy donors to a coplanar acceptor. It enables a four‐level energy system for efficient lasing at the acceptor emission band in a microspherical cavity with a low lasing
Vishal Kumar +6 more
wiley +1 more source
Lithographically Fabricated Magnifying Maxwell Fisheye Lenses
Photonics, 2016 Recently suggested magnifying Maxwell fisheye lenses, which are made of two half-lenses of different radii, have been fabricated and characterized.
Vera Smolyaninova +5 more
doaj +1 more source
Limitations to bit-rate and spatial capacity of an optical data transmission channel [PDF]
arXiv, 2002 The maximum bit-rate of a slab waveguide is ultimately determined by the waveguide dispersion. We show that while the maximum bit rate in a waveguide is inversely proportional to the waveguide's width, bit rate per unit width (i.e., spatial capacity) decreases, and in the limit of a zero-width waveguide it converges to a value, which is independent of ...
arxiv