Results 51 to 60 of about 276,203 (321)

Double Helical Plasmonic Antennas

Advanced Functional Materials, EarlyView.
Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz, Lorenz Löffler, Victor Deinhart, Ivo Utke, Thorsten Feichtner, Katja Höflich   +7 more
wiley   +1 more source

Quasi-planar optics: computing light propagation and scattering in planar waveguide arrays

, 2009
We analyze wave propagation in coupled planar waveguides, pointing specific attention to modal cross-talk and out-of-plane scattering in quasi-planar photonics.
Barnes, Bozhevolnyi, Bozhevolnyi, Chen, Chen, Clarricoats, Dolling, Elser, Govyadinov, Jacob, Justin Elser, Liu, Liu, Maier, Moharam, Oulton, Pendry, Reinhardt, Salandrino, Shalaev, Shin, Smolyaninov, Smolyaninov, Smolyaninov, Sondergaard, Stockman, Sukosin Thongrattanasiri, Thongrattanasiri, Viktor A. Podolskiy, Vlasov, Wangberg, Yao, Zia   +32 more
core   +1 more source

Elastic temporal waveguiding

New Journal of Physics, 2023
Abstract We provide a theoretical framework to mold time-modulated mechanical metamaterials with frequency conversion and wave-steering capabilities. To illustrate the concept, we initially focus on 1D lattices, whereby a sufficiently slow time-modulation of the stiffness is employed to convert the frequency content of impinging waves ...
Jonatha Santini, Emanuele Riva
openaire   +4 more sources

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

Advanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey, Uwe Hübner, Albane Benardais, Xiaofei Wu, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Henrik Schneidewind, Markus A Schmidt, Virginie Nazabal, Volker Deckert, Jer‐Shing Huang, Wei Wang   +12 more
wiley   +1 more source

Investigations on Grating-Enhanced Waveguides for Wide-Angle Light Couplings

Nanomaterials, 2022
As a universal physical scheme, effective light couplings to waveguides favor numerous applications. However, the low coupling efficiency at wide angles prohibits this fundamental functionality and thus lowers the performance levels of photonic systems ...
Yitong Gu, Ning Wang, Haorui Shang, Fei Yu, Lili Hu   +4 more
doaj   +1 more source

Segmented waveguides in thin silicon-on-insulator [PDF]

, 2005
We have developed new silicon-on-insulator waveguide designs for simultaneously achieving both low-loss optical confinement and electrical contacts, and we present a design methodology based on calculating the Bloch modes of such segmented waveguides ...
Baehr-Jones, Tom, Gunn, Lawrence C., Hochberg, Michael, Scherer, Axel, Walker, Chris, Witzens, Jeremy   +5 more
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Fourier finite element modeling of light emission in waveguides: 2.5-dimensional FEM approach [PDF]

, 2015
We present a Fourier finite element modeling of light emission of dipolar emitters coupled to infinitely long waveguides. Due to the translational symmetry, the three-dimensional (3D) coupled waveguide-emitter system can be decomposed into a series of ...
Chen, Yuntian, Ou, Yangxin, Pardo, David
core   +2 more sources

Emerging 2D Materials and Their Hybrid Nanostructures for Label‐Free Optical Biosensing: Recent Progress and Outlook

Advanced Functional Materials, EarlyView.
This review highlights recent advances in label‐free optical biosensors based on 2D materials and rationally designed mixed‐dimensional nanohybrids, emphasizing their synergistic effects and novel functionalities. It also discusses multifunctional sensing platforms and the integration of machine learning for intelligent data analysis.
Xinyi Li, Yonghao Fu, Yuehe Lin, Dan Du
wiley   +1 more source

Azimuthons in weakly nonlinear waveguides of different symmetries

, 2010
We show that weakly guiding nonlinear waveguides support stable propagation of rotating spatial solitons (azimuthons). We investigate the role of waveguide symmetry on the soliton rotation.
Królikowski, Wieslaw, Lu, Keqing, Maucher, Fabian, Pour, Arpa Galestian, Skupin, Stefan, Zhang, Yiqi   +5 more
core   +1 more source