Results 61 to 70 of about 134,722 (288)

Matrix Wiener-Hopf factorisation II [PDF]

, 1984
A direct method is described for effecting the explicit Wiener-Hopf factorisation of a class of (2 x 2}—matrices. The class is determined such that the factorisation problem can be reduced to a matrix Hilbert problem which involves an upper or lower ...
Rawlins, A D
core   +1 more source

Diffraction by a small aperture in conical geometry: Application to metal coated tips used in near-field scanning optical microscopy

, 2010
Light diffraction through a subwavelength aperture located at the apex of a metallic screen with conical geometry is investigated theoretically. A method based on a multipole field expansion is developed to solve Maxwell's equations analytically using ...
A. Babinet, A. Drezet, A. Drezet, A. Roberts, C. Bouwkamp, C. Girard, C. Huang, C. J. Bouwkamp, C. M. Butler, C. Obermüller, C. Obermüller, D. J. Shin, D. V. Labeke, D. W. Pohl, E. Betzig, E. H. Synge, G. Kirchhoff, H. A. Bethe, H. Cory, J. C. Woehl, J. J. Greffet, K. M. Siegel, L. Aigouy, L. B. Felsen, L. B. Felsen, L. Novotny, L. Rayleigh, R. H. Hall, S. Huant, W. R. Smythe   +29 more
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

A time-domain second-order FEM model for the wave diffraction-radiation problem. Validation with a semisubmersible platform [PDF]

Marine Structures, 2018
A finite element method for the solution of the up-to-second-order wave diffraction-radiation problem in the time-domain is proposed. The solver has been verified against available analytical solutions, and validated against experimental data available for the HiPRWind semisubmersible platform (designed for floating wind turbines).
Serván Camas, Borja, Gutiérrez Romero, José Enrique, García Espinosa, Julio   +2 more
openaire   +4 more sources

Extension of Bethe's diffraction model to conical Geometry: application to near field optics

, 2003
The generality of the Bethe's two dipole model for light diffraction through a subwavelength aperture in a conducting plane is studied in the radiation zone for coated conical fiber tips as those used in near field scanning optical microscopy.
A Drezet, Betzig E., Bouwkamp C., Grober R. D., J. C Woehl, Jackson J. D., Rayleigh L., S Huant   +7 more
core   +1 more source

Photoelectron diffraction: from phenomenological demonstration to practical tool [PDF]

, 2008
The potential of photoelectron diffraction—exploiting the coherent interference of directly-emitted and elastically scattered components of the photoelectron wavefield emitted from a core level of a surface atom to obtain structural information—was first
A. Leibsch, A. Leibsch, D. Norman, D. P. Woodruff, D.I. Sayago, D.I. Sayago, D.I. Sayago, D.P. Woodruff, D.P. Woodruff, D.P. Woodruff, D.P. Woodruff, D.P. Woodruff, F. Allegretti, F. Allegretti, F. Allegretti, F. Bondino, G. Nisbet, J.-H. Kang, J.-T. Hoeft, J.W. Gadzuk, J.W. Gadzuk, J.W. Gadzuk, M. Polcik, M.M. Traum, M.R. Howells, N.V. Smith, O. Bjorneholm, R.B. Rankin, S. Kono, S. Thevuthasan, S.A. Chambers, S.D. Kevan   +31 more
core   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Holography and Coherent Diffraction with Low-Energy Electrons: A Route towards Structural Biology at the Single Molecule Level [PDF]

, 2015
The current state of the art in structural biology is led by NMR, X-ray crystallography and TEM investigations. These powerful tools however all rely on averaging over a large ensemble of molecules.
Escher, Conrad, Fink, Hans-Werner, Latychevskaia, Tatiana, Longchamp, Jean-Nicolas   +3 more
core   +1 more source

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Linear diffraction and radiation theory of water waves by a truncated vertical circular cylinder with heave plate in deep and shallow drafts

International Journal of Naval Architecture and Ocean Engineering
A first-order analytical theory on a truncated and surface-piercing vertical circular cylinder with a circular plate mounted at the bottom of the cylinder was generalized to solve the linear wave diffraction and radiation problems based on potential flow
Seung-Yoon Han, Benjamin Bouscasse, Vincent Leroy, David Le Touzé   +3 more
doaj   +1 more source