Results 251 to 260 of about 1,053,175 (373)

Singularity formation in 3D Euler equations with smooth initial data and boundary. [PDF]

Proc Natl Acad Sci U S A
Chen J, Hou TY.
europepmc   +1 more source

Adaptive Fuzzy Finite-Time Singular Perturbation Control for Flexible Joint Manipulators With State Constraints [PDF]

Rui Qi, Hak‐Keung Lam, Jiapeng Liu, Jinpeng Yu   +3 more
openalex   +1 more source

REMARKS ON A CERTAIN HYPOTHESIS IN SINGULAR PERTURBATIONS

, 1969
K. W. Chang
semanticscholar   +1 more source

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

A study of traveling wave solutions and modulation instability in the (3+1)-dimensional Sakovich equation employing advanced analytical techniques. [PDF]

Sci Rep
Ahmad J, Hameed M, Mustafa Z, Pervaiz F, Nadeem M, Alsayaad Y.   +5 more
europepmc   +1 more source

Quadratic forms for singular perturbations of the Laplacian

, 1990
A. Teta
semanticscholar   +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

Soliton dynamics and stability of equilibrium points of the Manakov equation. [PDF]

Sci Rep
Rahaman MS, Islam MN, Ullah MS.
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