Results 41 to 50 of about 3,070 (270)

Chirality and Organization of Adsorbates Modify Surface Phonon Dynamics

open access: yesAdvanced Functional Materials, EarlyView.
Chirality and molecular organization are shown to influence surface phonon dynamics in gold films. Time‐resolved Joule heating measurements reveal that ordered homochiral monolayers increase the Debye temperature and disordered layers reduce it, while ordered racemic controls have no effect.
Meital Ozeri   +6 more
wiley   +1 more source

Analysis of segregated boundary-domain integral equations for mixed variable-coefficient BVPs in exterior domains

open access: yes, 2011
This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2011 Birkhäuser Boston.Some direct segregated systems of boundary–domain integral equations (LBDIEs) associated with the mixed
Mikhailov, SE   +5 more
core   +1 more source

Coating Artificial Spider Silk Fiber with Magnetic FeCo: An Effective Strategy for Creating a Flexible Magneto‐Responsive Material

open access: yesAdvanced Functional Materials, EarlyView.
An original method is presented for producing artificial spider silk fibers with magnetic and magnetomechanical responsiveness, which consists in coating them with a nanometer‐thick layer of FeCo alloy by sputtering deposition. The challenge of combining organic materials and inorganic magnetic nanostructures is addressed, thus taking a step forward ...
Filippo Lanaro   +5 more
wiley   +1 more source

On the adjoint of a symmetric operator [PDF]

open access: yes, 2007
In general it is a non-trivial task to determine the adjoint S* of an unbounded symmetric operator S in a Hilbert or Krein space. We propose a method to specify S* explicitly which makes use of two boundary mappings that satisfy an abstract Green's ...
Meda S.   +47 more
core   +1 more source

Near‐Infrared Light‐Driven Zn/Au Janus Micromotors for Multiplex SERS Detection of Anticancer Drugs

open access: yesAdvanced Functional Materials, EarlyView.
Zn/Au Janus micromotors, propelled by thermophoretic effects under NIR light, function as active SERS platforms for single and multiplex detection of anticancer drugs. Their dynamic motion enhances analyte exchange at the Au interface, reducing saturation and competitive adsorption, thereby improving sensitivity and extending the linear detection range.
Tijana Maric   +8 more
wiley   +1 more source

Existence of solutions for a non-variational system of elliptic PDE's via topological methods

open access: yesElectronic Journal of Differential Equations, 2016
Summary: In this article, we prove the existence of solutions for a non-variational system of elliptic PDE's. Also we study a system of bi-Laplacian equations with two nonlinearities and without variational assumptions. First, we prove a priori solution estimates, and then we use fixed point theory, to deduce the existence of solutions.
Fethi Soltani, Habib Yazidi
openaire   +2 more sources

3D Printing Innovations in Polymeric Porous and Patterned Architecture

open access: yesAdvanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil   +13 more
wiley   +1 more source

Optimal L ∞ $L^{\infty }$ -error analysis for parabolic systems of quasi-variational inequalities with nonlinear source terms

open access: yesJournal of Inequalities and Applications
This paper is devoted to the numerical analysis of a system of parabolic quasi-variational inequalities with nonlinear source terms and solution-dependent obstacles. We consider a vector-valued problem defined on a bounded domain and governed by coercive
Salah Boulaaras
doaj   +1 more source

Existence and multiplicity of solutions for nonlinear elliptic Dirichlet systems

open access: yesElectronic Journal of Differential Equations, 2012
The existence and multiplicity of solutions for systems of nonlinear elliptic equations with Dirichlet boundary conditions is investigated. Under suitable assumptions on the potential of the nonlinearity, the existence of one, two, or three solutions ...
Gabriele Bonanno, Elisabetta Tornatore
doaj  

Infinitely many solutions for a Neumann elliptic system with ( p ( ⋅ ) , q ( ⋅ ) ) $(p(\cdot ), q(\cdot ))$ -Laplacian type operator

open access: yesBoundary Value Problems
This paper is concerned with a system of nonlinear elliptic equations driven by ( p ( ⋅ ) , q ( ⋅ ) ) $(p(\cdot ), q(\cdot ))$ -Laplacian type operators with variable exponents, subject to homogeneous Neumann boundary conditions.
Ahmed Ahmed, Khaled Kefi
doaj   +1 more source

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