Results 91 to 100 of about 330,080 (276)

Versatile Control of Spectral Emissivity in Mid‐Infrared Metasurfaces via Silicon Microstructuring

Advanced Optical Materials, EarlyView.
A family of metasurfaces is obtained very simply, solely through the structuration of a single‐crystal silicon surface, without any other material involved. Based on the infrared plasmonic behavior of highly doped silicon, further control of surface topography by micro‐ and nano‐structuration is found to enable an avenue of options toward tailoring its
Kirollos Ernest Matta, Elyes Nefzaoui, Ahmed A. Elsayed, Armande Hervé, Martine Gnambodoe‐CapoChichi, Frédéric Marty, Mazen Erfan, Yasser M. Sabry, Abdelkrim Khelif, Tarik Bourouina   +9 more
wiley   +1 more source

Numerical Analysis of Bioconvection Generated by Chemotactic Bacteria

Journal of Fluid Science and Technology, 2009
Numerical simulations were carried out modeling the bioconvection generated by chemotactic bacteria in a shallow chamber, and the influence of the Rayleigh number on bioconvection was examined.
Hideki YANAOKA, Takao INAMURA, Kaoru SUZUKI   +2 more
doaj   +1 more source

Multipolar Resonances in Electro‐Optic Metasurfaces with Moderate Refractive Index

Advanced Photonics Research, EarlyView.
Electro‐optic nanoantennas with moderate refractive indices of 2.3 to 3.0 are numerically shown to sustain strong multipolar resonances, enabling efficient light confinement and EO tuning. Multipolar modes of even parity are most sensitive to variations in the refractive index.
Viktoriia E. Babicheva, Mariacristina Rumi   +1 more
wiley   +1 more source

Using of multi-phase thermal model of the lattice Boltzmann method for simulation of two-phase Rayleigh–Bénard convective heat transfer

Results in Chemistry
In this study, the neutral scalar thermal model is presented for single-phase and so, a single-phase Rayleigh–Bénard is investigated. The Shan-Chen model is expressed in the isothermal state, and by combining the two models, the mixed Shan-Chen thermal ...
Murtadha M. Al-Zahiwat, Ihab Omar, Shahram Babadoust, Laith S. Sabri, Arian Yazdkhsti, S. Mohammad Sajadi, Abbas Deriszadeh, Nafiseh Emami   +7 more
doaj   +1 more source

Rank three matroids are Rayleigh

, 2004
A Rayleigh matroid is one which satisfies a set of inequalities analogous to the Rayleigh monotonicity property of linear resistive electrical networks. We show that every matroid of rank three satisfies these inequalities.Comment: 11 pages, 3 figures, 3
Wagner, David G.
core   +2 more sources

Standing and travelling waves in cylindrical Rayleigh-Benard convection

, 2007
The Boussinesq equations for Rayleigh-Benard convection are simulated for a cylindrical container with an aspect ratio near 1.5. The transition from an axisymmetric stationary flow to time-dependent flows is studied using nonlinear simulations, linear ...
Boronska, Katarzyna, Tuckerman, Laurette S.   +1 more
core   +1 more source

Enhanced Trapping with an Optimized Graphene‐Based Bowtie Plasmonic Nanotweezer: Design, Analysis, and Bioanalytical Applications

Advanced Photonics Research, EarlyView.
A graphene‐based bowtie plasmonic nanotweezer is designed and optimized using particle swarm optimization and transfer matrix analysis. The structure achieves strong field confinement, delivering trapping forces up to 6 nN W−1 for 10 nm bioparticles with sixfold lower power requirements than conventional designs.
Saba Ebrahimpanah, Mohammad Hazhir Mozaffari, Ali Farmani   +2 more
wiley   +1 more source

Research on the Value of Rayleigh Damping Parameter in Explicit and Implicit Integrals for Dynamic Analysis of Large Structures

Buildings
Rayleigh damping is proportional to the combination of the structural mass matrix and stiffness matrix and is widely used in structural seismic analysis.
Yan Chen, Haitao Wang, Yougang Wang, Junhong Zhang, Zitong Bao, Jianbo Li, Miaomiao Chen, Peng Xu   +7 more
doaj   +1 more source

Entropy Change through Rayleigh-B\'enard Convective Transition with Rigid Boundaries

, 2007
The previous investigation on Rayleigh-B\'enard convection of a dilute classical gas [T. Kita: J. Phys. Soc. Jpn. {\bf 75} (2006) 124005] is extended to calculate entropy change of the convective transition with the rigid boundaries.
Chandrasekhar S., Gottlieb D., Kita T., Kita T., Pesch W., Press W. H.   +5 more
core   +1 more source

Computational Analysis of a GST‐Based Long‐Wave Infrared Microring Resonator on a ZnSe Platform as a Photonic Sensor

Advanced Photonics Research, EarlyView.
A Ge2Sb2Te5 (GST)‐based microring resonator is designed and simulated on a ZnSe‐platform that operates in the long‐wave infrared (LWIR) wavelength of 8 μm. The structure demonstrates strong power confinement and high Q‐factor. GST resonator is used for gas and biosensing applications.
Tanzina Rahman, Md. Islahur Rahman Ebon, Amrita Kumar Sana, Jaker Hossain   +3 more
wiley   +1 more source