Results 61 to 70 of about 418,956 (371)
Experimental realization of photonic topological insulator in a uniaxial metacrystal waveguide [PDF]
Nature Communications, 2014 Photonic analogue of topological insulator was recently predicted by arranging ε/μ (permittivity/permeability)-matched bianisotropic metamaterials into two-dimensional superlattices.
Wen-Jie Chen +6 more
semanticscholar +1 more source
Mechanisms of De‐icing by Surface Rayleigh and Plate Lamb Acoustic Waves
Advanced Engineering Materials, EarlyView.Ice accretion impacts daily life, renewable energy generation, maintenance, and security in industries and aeronautics. Acoustic waves (AW) are a promising method for ice removal, although de‐icing mechanisms require further investigation to optimize energy efficiency.
Shilpi Pandey +15 more
wiley +1 more source
Second-Harmonic Generation in Suspended AlGaAs Waveguides: A Comparative Study
Micromachines, 2020 Due to adjustable modal birefringence, suspended AlGaAs optical waveguides with submicron transverse sections can support phase-matched frequency mixing in the whole material transparency range, even close to the material bandgap, by tuning the width-to ...
Iännis Roland +6 more
doaj +1 more source
Exciton-polariton emission from organic semiconductor optical waveguides [PDF]
, 2011 We photo-excite slab polymer waveguides doped with J-aggregating dye molecules and measure the leaky emission from strongly coupled waveguide exciton polariton modes at room temperature. We show that the momentum of the waveguide exciton polaritons can be controlled by modifying the thickness of the excitonic waveguide.
arxiv +1 more source
Nanoscale waveguiding methods [PDF]
Nanoscale Research Letters, 2007 While 32 nm lithography technology is on the horizon for integrated circuit (IC) fabrication, matching the pace for miniaturization with optics has been hampered by the diffraction limit. However, development of nanoscale components and guiding methods is burgeoning through advances in fabrication techniques and materials processing.
Chia-Jean Wang, Lih Y. Lin
openaire +4 more sources
Advanced Engineering Materials, EarlyView.This study explores aerosol jet‐printed (AJP) surface roughness, its effects on the performance of microwave electronics, and its process contributors. First, an electromagnetic model is vetted for AJP's unique roughness signature. Simulations are built which show process‐induced roughness is as significant as conductor resistivity in driving microwave
Christopher Areias, Alkim Akyurtlu
wiley +1 more source
Coupled nanopillar waveguides: optical properties and applications [PDF]
Phys. Stat. Sol. A 204 (11), 3647-3661 (2007), 2007 In this paper we review basic properties of coupled periodic and aperiodic nanopillar waveguides. A coupled nanopillar waveguide consists of several rows of periodically or aperiodically placed dielectric rods (pillars). In such a waveguide, light confinement is due to the total internal reflection, while guided modes dispersion is strongly affected by
arxiv +1 more source
Chiral Waveguides for Robust Waveguiding at the Deep Subwavelength Scale [PDF]
Physical Review Applied, 2018 Guiding waves at scales shorter than the wavelength is crucial for many applications, including compact signal-processing systems and concentration of wave energy. High sensitivity to geometrical imperfections and disorder-induced backscattering, however, pose major problems. This study proposes using a chiral metamaterial, in which the waves guided at
Orazbayev, B., Kaina, N., Fleury, R.
openaire +3 more sources
Recent Progress on 2D‐Material‐Based Smart Textiles: Materials, Methods, and Multifunctionality
Advanced Engineering Materials, EarlyView.Advancements in 2D‐material‐integrated smart textiles are reviewed, with a focus on materials, fabrication methods, and multifunctional applications, including energy harvesting, monitoring, EMI shielding, energy storage, and thermal management. The discussion addresses key challenges and provides insights into the future development of next‐generation
Yong Choi +5 more
wiley +1 more source
Fabrication of low-loss SOI nano-waveguides including BEOL processes for nonlinear applications [PDF]
Journal of the European Optical Society-Rapid Publications, 2012 We report successful fabrication of low-loss SOI nano-waveguides with integrated PIN diode structures. The entire fabrication process is done on a 200 mm BiCMOS toolset using front-end-of-line (FEOL) and back-end-of-line (BEOL) processes and does not ...
Tian H. +5 more
doaj +1 more source