Results 71 to 80 of about 156,506 (292)

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

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

Advanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He, Minxian Zhang, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +5 more
wiley   +1 more source

Convergence of infinite element methods for scalar waveguide problems [PDF]

, 2014
We consider the numerical solution of scalar wave equations in domains which are the union of a bounded domain and a finite number of infinite cylindrical waveguides.
Hohage, Thorsten, Nannen, Lothar
core   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

Advanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

Photon Avalanching Nanoparticles: The Next Generation of Upconverting Nanomaterials?

Advanced Functional Materials, EarlyView.
This Perspective outlines the mechanistic foundations that enable photon‐avalanche (PA) behavior in lanthanide nanomaterials and contrasts them with emerging application spaces and forward‐looking design strategies. By bridging threshold engineering, energy‐transfer dynamics, and materials engineering, we provide a coherent roadmap for advancing the ...
Kimoon Lee, Yunseo Kim, Hyeong‐ku Jo, Dongjoon Yoon, Byeonghyeok Im, WonJeong Yu, Eui‐Rim On, Changhwan Lee   +7 more
wiley   +1 more source

The local adsorption site of methylthiolate on Au(1 1 1): Bridge or atop? [PDF]

, 2009
Measurements of the local adsorption geometry of the S head-group atom in the Au(1 1 1)(√3 × √3)R30°–CH3S surface have been made using normal incidence X-ray standing waves (NIXSW) and S 1s scanned-energy mode photoelectron diffraction on the same ...
Chaudhuri, Anindita, Dhanak, Vin, Jackson, D. C., Jones, R. G., Lerotholi, T. J., Woodruff, D. P.   +5 more
core   +1 more source

Record Energy Storage Performance Metrics in Ferroelectric Hafnia‐Based Films through Heterostructure Design

Advanced Functional Materials, EarlyView.
Dielectric capacitors typically struggle to achieve both high energy storage density and high efficiency at applied voltages below 10 V. Here, we address this challenge by introducing a novel hybrid fluorite/perovskite heterostructure design that combines ultra‐high recoverable energy storage density with efficient energy release (Uf ≈ 1016 J/cm3), at ...
Ampattu R. Jayakrishnan, Nuno Estrócio, Inês Silva, Raluca Negrea, Marian C. Istrate, Koppole C. Sekhar, Luís Marques, Judith L. MacManus‐Driscoll, Ignasi Fina, Florencio Sánchez, José P. B. Silva   +10 more
wiley   +1 more source

EFFECT OF ANOMALOUSLY STRONG ABSORPTION OF ELECTROMAGNETIC RADIATION IN FINE CONDUCTIVE FIBERS [PDF]

Radio Physics and Radio Astronomy
Subject and Purpose. The effect of abnormally strong interaction of electromagnetic radiation with fine conductive fibers is сonsidered. Metal, semiconductor, or graphite fibers can heavily absorb electromagnetic radiation provided the fiber diameter is ...
M. G. Kokodii, A. O. Natarova, D. V. Gurina, I. O. Priz, V. O. Maslov, V. D. Karlov   +5 more
doaj   +1 more source

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

Magnetothermal‐Triggered Response and Self‐Healing of Recyclable and Reprocessable Nanocomposites for Actuation Systems

Advanced Functional Materials, EarlyView.
Developing recyclable materials for magnetic robotics that combine rapid response and self‐healing properties is challenging. Hence, this study focuses on the integration of magnetothermal nanoparticles into a dynamic sorbitol‐based vitrimer, a recyclable composite capable of remote actuation and self‐healing by magnetic heating.
Maria Weißpflog, Gloria Signorato, Birgit Hankiewicz, Volker Abetz   +3 more
wiley   +1 more source