Results 61 to 70 of about 40,571 (332)
Advanced Functional Materials, EarlyView.Sustainable films with heterosymmetric structures, harmoniously integrating symmetry and asymmetry, are fabricated using cellulose nanocrystals and hydrophilic nanolignin via evaporation‐induced self‐assembly, which exhibit excellent multiple polarization optical properties.
Qun Song +7 more
wiley +1 more source
Null controllability of a coupled system of degenerate parabolic equations with lower order terms
Electronic Journal of Differential Equations, 2019 This article concerns the null controllability of a control system governed by coupled degenerate parabolic equations with lower order terms. For these equations, the convection terms cannot be controlled by the diffusion terms.
Jianing Xu, Qian Zhou, Yuanyuan Nie
doaj
A relaxation approximation for degenerate parabolic equations [PDF]
Methods and Applications of Analysis, 1999 The author considers the Cauchy problem for the parabolic equation \[ u_t+ \sum^d_{j= 0} (A_j(u))_{x_j}- \Delta(B(u))= G(u),\quad u(x,0)= u_0(x),\tag{1} \] where \(x\in \mathbb{R}^d\), \(u_0\in L^1(\mathbb{R}^d)\cap L^\infty(\mathbb{R}^d)\) and \(A_j\), \(B\) and \(C\) are smooth functions with \(B'(u)\geq 0\).
openaire +3 more sources
Fermi Surface Nesting and Anomalous Hall Effect in Magnetically Frustrated Mn2PdIn
Advanced Functional Materials, EarlyView.Mn2PdIn, a frustrated inverse Heusler alloy, showing electronic‐structure driven anomalous Hall effect with Weyl crossings, Fermi‐surface nesting and near‐zero magnetization ideal for low‐magnetization spintronics. Abstract Noncollinear magnets with near‐zero net magnetization and nontrivial bulk electronic topology hold significant promise for ...
Afsar Ahmed +7 more
wiley +1 more source
3D‐Printed Soft Magnetoactive Origami Actuators
Advanced Functional Materials, EarlyView.Soft magnetoactive films are 3D‐printed using ink with up to 75 wt.% ferromagnetic particles and dual UV/heat curing, then integrated with various origami structures. The films are flexible, magnetically responsive, and programmable, enabling flexible integration with origami without hindering shape‐changeability.
Sen Zhang +6 more
wiley +1 more source
A New Family of Ternary Intermetallic Compounds with Dualistic Atomic Ordering – The ZIP Phases
Advanced Materials, EarlyView.The ZIP phases are ternary intermetallic compounds with dualistic atomic ordering, i.e., they exhibit one face‐centered cubic (fcc; space group Fd3¯$\bar 3$m) variant and one hexagonal (space group P63/mmc) variant. The ZIP phases in the Nb‐Si‐Ni system are the Nb3SiNi2 (fcc) and Ni3SiNb2 (hexagonal) ternary IMCs, crystal structure schematics of which ...
Matheus A. Tunes +24 more
wiley +1 more source
Nonlinear Optical Response in Layer‐Stacked Gallenene with Ferroelectric Polarization
Advanced Materials, EarlyView.Liquid metals are utilized in applications ranging from soft robotics to conductive inks, owing to their physical properties providing distinct mechanical, electrical, and thermal advantages. This work uses classical material science techniques to characterize ferroelectric polarization in supercooled liquid gallium and utilizes second harmonic ...
Muhammad Yunusa +17 more
wiley +1 more source
Uniqueness results for convex Hamilton-Jacobi equations under $p>1$ growth conditions on data [PDF]
, 2008 Unbounded stochastic control problems may lead to Hamilton-Jacobi-Bellman equations whose Hamiltonians are not always defined, especially when the diffusion term is unbounded with respect to the control.
Da Lio, Francesca, Ley, Olivier
core +2 more sources
THz‐Driven Coherent Phonon Fingerprints of Hidden Symmetry Breaking in 2D Layered Hybrid Perovskites
Advanced Materials, EarlyView.Intense THz pulses are employed to drive coherent phonons in 2D Ruddlesden‐Popper hybrid metal‐halide perovskites (HOIPs) from the (PEA)2(MA)n‐1PbnI3n+1 family, revealing mode‐selective spectroscopic signatures of inversion symmetry breaking in those nominally centrosymmetric materials. These findings provide a handle to decode nonlinear phonon driving
Joanna M. Urban +14 more
wiley +1 more source
Advanced Materials, EarlyView.Biological and biologically‐inspired functional nanostructures with structural, thermal, optical, and sensing applications are reviewed. The role of nanoscale features in biological materials on performance is described, and their blueprints are used for bio‐inspired nanomaterials, synthesized using advanced techniques (i.e., photolithography, bio ...
Chao Hsuan (Joseph) Sung +15 more
wiley +1 more source