Results 61 to 70 of about 58,791 (292)

Deterministic Aided STAP for Target Detection in Heterogeneous Situations

open access: yesInternational Journal of Antennas and Propagation, 2013
Classical space-time adaptive processing (STAP) detectors are strongly limited when facing highly heterogeneous environments. Indeed, in this case, representative target free data are no longer available.
J.-F. Degurse   +3 more
doaj   +1 more source

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

open access: yesAdvanced 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   +9 more
wiley   +1 more source

Estruturas de ondas lentas: análise e medidas em laboratório

open access: yesRevista Brasileira de Ensino de Física
Estruturas de onda lenta possuem aplicações em vários setores tais como aceleradores lineares, usados em aplicações médicas e em física nuclear; em válvulas eletrônicas e em filtros de micro-ondas.
Marcelo Bender Perotoni   +1 more
doaj   +1 more source

Plasmonic Optical Fiber-Grating Immunosensing: A Review

open access: yesSensors, 2017
Plasmonic immunosensors are usually made of a noble metal (in the form of a film or nanoparticles) on which bioreceptors are grafted to sense analytes based on the antibody/antigen or other affinity mechanism.
Tuan Guo   +3 more
doaj   +1 more source

Temporal boundaries in electromagnetic materials

open access: yesNew Journal of Physics, 2021
Temporally modulated optical media are important in both abstract and applied situations, such as spacetime transformation optics, relativistic laser–plasma interactions, and dynamic metamaterials. Here we investigate the behaviour of temporal boundaries,
Jonathan Gratus   +3 more
doaj   +1 more source

Structural Design and Analysis of Hybrid Drive Multi-Degree-of-Freedom Motor

open access: yesMicromachines, 2022
Piezoelectric-driven multi-degree-of-freedom motors can turn off self-lock, withstand high and low temperatures, are small in size and compact in structure, and can easily achieve miniaturization.
Zheng Li   +5 more
doaj   +1 more source

It's Hard to Learn How Gravity and Electromagnetism Couple

open access: yes, 2010
We construct the most general effective Lagrangian coupling gravity and electromagnetism up to mass dimension 6 by enumerating all possible non-minimal coupling terms respecting both diffeomorphism and gauge invariance.
C. Misner   +7 more
core   +1 more source

Fractional electromagnetic waves [PDF]

open access: yes2011 11th International Conference on Laser and Fiber-Optical Networks Modeling (LFNM), 2011
In The present work we consider the electromagnetic wave equation in terms of the fractional derivative of the Caputo type. The order of the derivative being considered is 0<λ≤1. A new parameter σ is introduced which characterizes the existence of the fractional components in the system.
Rosales, J. J.   +3 more
openaire   +2 more sources

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

open access: yesAdvanced 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

Slight Truncation Changes in Iron Oxide Nanocubes Strongly Affect Their Magnetic Properties

open access: yesAdvanced Functional Materials, EarlyView.
Subtle variations in nanoparticle morphology can lead to significant changes in functional properties. An automated shape‐fitting method captures minor differences in corner truncation between iron oxide nanocubes of similar sizes synthesized under identical conditions, revealing pronounced disparities in their magnetic and hyperthermia behavior ...
Kingsley Poon   +7 more
wiley   +1 more source

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