Results 231 to 240 of about 166,500 (329)

Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist‐Planar Oriented Liquid Crystal Fresnel Lens

Advanced Optical Materials, EarlyView.
A simple and efficient method for determining the stability of optical vortices via Fourier transform using a conventional spherical lens is presented. The theoretical and experimental results demonstrate a practical approach to directly and unambiguously measure the magnitude and sign of the topological charge of a beam without altering an ...
Elena Melnikova, Katsiaryna Pantsialeyeva, Dmitry Gorbach, Alexei Tolstik, Sergei Slussarenko Jr., Alina Karabchevsky   +5 more
wiley   +1 more source

Study of phase separation process in multi-component mixtures using analytical methods and decomposition variational iteration method for the fourth-order Cahn-Hilliard equation. [PDF]

Sci Rep
Luo J, Manafian J, Aghazadeh A, Ilhan OA, Eslami B, Fattah AA, Mahmoud KH, Aghdaei MF.   +7 more
europepmc   +1 more source

Structural Colors from Ultrathin Lignin Films

Advanced Optical Materials, EarlyView.
Thickness‐dependent structural colors in ultrathin lignin films generate a full visible palette, tuned simply by solution concentration and spin speed. Abstract Structural colors offer a sustainable alternative to toxic pigments and dyes, yet their realization from lignin, the most abundant aromatic biopolymer, has remained elusive.
Bang An, Anran Mao, Torbjörn Pettersson, Wei Li, Shouxin Liu, Anna J. Svagan, Ravi Shanker   +6 more
wiley   +1 more source

Notes on the Jellinek-Berry Thermostated Ideal Gas. [PDF]

J Stat Phys
Butler LT, Sharifi A.
europepmc   +1 more source

The Problem of Singular Perturbations of Linear Ordinary Differential Equations at Regular Singular Points, I

, 1966
Russell, L. David, Sibuya, Yasutaka
openalex   +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

Nonlinear dynamics of self-sustaining waves in anisotropic media. [PDF]

Sci Rep
Khater MMA, Alfalqi SH, Vokhmintsev A.
europepmc   +1 more source

A finite differences MATLAB code for the numerical solution of second order singular perturbation problems

, 2012
Pierluigi Amodio, Giuseppina Settanni
openalex   +2 more sources

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

Analysis strategies for time-resolved X-ray solution scattering at high repetition rate XFEL sources. [PDF]

J Synchrotron Radiat
Haubro ML, Zederkof DB, Khakhulin D, Yousef H, Jiang Y, Macias IJB, Kluyver T, Lima F, Biednov M, Milne C, Uemura Y, Zalden P, Wang H, Dohn AO, Mitterer K, Markmann V, Ohlson O, Wachter-Lehn MT, Lenzen P, Jensen BK, Høholdt A, van Driel TB, Nimmrich A, Selenius E, Levi G, Møller KB, Nielsen MM, Haldrup K.   +27 more
europepmc   +1 more source