Results 81 to 90 of about 38,605 (282)

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Directional Flow of Confined Polaritons in CrSBr

Advanced Materials, EarlyView.
CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak, Sichao Yu, Jaime Abad‐Arredondo, Biswajit Datta, Andy Cruz, Sorah Fischer, Kseniia Mosina, Zdeněk Sofer, Antonio I. Fernández‐Domínguez, Francisco J. Garcia‐Vidal, Vinod M. Menon   +10 more
wiley   +1 more source

Cauchy horizons in Gowdy space times

, 2003
We analyse exhaustively the structure of \emph{non-degenerate} Cauchy horizons in Gowdy space-times, and we establish existence of a large class of non-polarized Gowdy space-times with such horizons. Added in proof: Our results here, together with deep
, Berger B K, Berger B K, Chae M Chru?ciel P T, Christodoulou D, Chru?ciel P T, Chru?ciel P T, Chru?ciel P T, Chru?ciel P T, Gowdy R H, Grubisi? B, Isenberg J, Ishak M, Kayll Lake, Kichenassamy S, Moncrief V, Moncrief V, Moncrief V, Moncrief V, Piotr T Chru ciel, Rendall A, Rendall A D, Rendall A D, Ringström H, Ringström H, Ringström H   +25 more
core   +1 more source

On quasilinear hyperbolic equations with degenerate principal part

Tsukuba Journal of Mathematics, 1998
The goal of the present paper is to study the quasilinear weakly hyperbolic Cauchy problem \[ u_{tt}= \sum_{i,j} (a_{ij}(t,x)u_{x_i})_{x_j}+ f(t,x,u,\nabla_x u), \] \[ u(0,x)= u_0(x),\quad u_t(0,x)= u_1(x). \] Here weakly hyperbolic means \[ 0\leq \sum^n_{i,j= 1} a_{ij}(t,x)\xi_j \xi_j\leq \Lambda|\xi|^2.
D'ANCONA, Piero Antonio, M. DI FLAVIANO
openaire   +4 more sources

Elastomeric Micro‐Balloons for Remote Control of Cerebral Blood Flow and Real‐Time In vivo Imaging of Rodent Brain Response to Hypoperfusion

Advanced Materials, EarlyView.
This study reports the fabrication of MRI‐compatible elastomeric micro‐balloons via a multi‐step bubble casting process, where the monolithic elastomeric wall is selectively stiffened for reversible and controlled inflation and elasticity, depending on the target vessels for graded occlusion of cerebral arteries.
Jong Bin Kim, Jinghui Wang, Yinding Chi, Jingxian Wu, Alicia Ng, Guanda Qiao, Honglin Tan, Miroslaw Janowski, Piotr Walczak, Yajie Liang, Shu Yang   +10 more
wiley   +1 more source

Mathematical Formulation of Causal Propagation in Relativistic Ideal Fluids

Axioms
We establish a rigorous kinetic-theoretical framework to analyze causal propagation in thermal transport phenomena within relativistic ideal fluids, building a more rigorous framework based on the kinetic theory of gases.
Dominique Brun-Battistini, Alfredo Sandoval-Villalbazo, Hernando Efrain Caicedo-Ortiz   +2 more
doaj   +1 more source

Strong traces for degenerate parabolic-hyperbolic equations

Discrete & Continuous Dynamical Systems - A, 2009
In this paper we consider bounded weak solutions $u$ of degenerate parabolic-hyperbolic equations defined in a subset $]0,T[\times\Omega\subset \R^{+}\times \R^d$. We define a strong notion of trace at the boundary $]0,T[\times\partial\Omega$ reached by $L^1$ convergence for a large class of functionals of $u$ and at $0 \times \Omega$ reached by $
openaire   +1 more source

Topological Point Defects in SmC* Liquid Crystals Under Mechanical Disturbance

Advanced Materials Interfaces, EarlyView.
Tangetial air jet shear inducess island formation and nucleates topological point defects in uniform SmC films. Island bounded by edge dislocation loops shrink and transform into isolated point defects under continued shear. Mechanical perturbatio provides a controllable route for defect engineering in smectric liquid crystal thin films.
Gunganist Kongklad, Vandana Molahalli, Apichart Pattanaporkratana, Nattaporn Chattham   +3 more
wiley   +1 more source

Problems of optimal and hard control over solutions of special type of nonstationary Sobolev type equations

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2014
Sobolev type equations now constitute a vast area of nonclassical equations of mathematical physics. Those called nonclassical equations of mathematical physics, whose representation in the form of equations or systems of equations partial does not fit ...
Minzilia A Sagadeeva, Andrey N Shulepov
doaj   +1 more source

Bifurcations and degenerate periodic points in a three dimensional chaotic fluid flow

, 2016
Analysis of the periodic points of a conservative periodic dynamical system uncovers the basic kinematic structure of the transport dynamics, and identifies regions of local stability or chaos.
Lester, Daniel R., Metcalfe, Guy, Rudman, Murray, Smith, Lachlan D.   +3 more
core   +1 more source