Results 41 to 50 of about 528 (244)

Dual Graphene Patch Antenna For Ka Band Satellite Applications

International Journal of Aviation, Aeronautics, and Aerospace, 2019
Currently; grapheme offers a new opportunity to use in space technology and this is due to its amazing properties like conductivity, strength, flexibility and transparency which allows us to exploit new generation of ultra-fast nanoscale components ...
Mohammed Amin Rabah, Mohammed Bekhti
doaj   +1 more source

Dynamic electromagnetic polarizabilities of the photon

Physics Letters B, 1976
Abstract The dynamic electric and magnetic polarizabilities of the photon α and β are calculated by means of a backward dispersion relation for the relevant Compton amplitude. It is pointed out that the annihilation channel exchanges could be responsible for the ordering α > β given by the present experimental determinations.
I. Guiaşu, E.E. Radescu
openaire   +1 more source

Electromagnetic and gravitational responses of photonic Landau levels [PDF]

Nature, 2019
Topology has recently become a focus in condensed matter physics, arising in the context of the quantum Hall effect and topological insulators. In both of these cases, the topology of the system is defined through bulk properties ('topological invariants') but detected through surface properties.
Nathan, Schine, Michelle, Chalupnik, Tankut, Can, Andrey, Gromov, Jonathan, Simon   +4 more
openaire   +2 more sources

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

Advanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau, Christian N. Saggau, Stefan Baunack, Thomas Gemming, Yara Abdelaal, Robert Weser, Oliver G. Schmidt, Hagen Schmidt, Andreas Winkler, Mariana Medina‐Sánchez   +9 more
wiley   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

Advanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

RELATIVISTIC STRAIN AND ELECTROMAGNETIC PHOTON-LIKE OBJECTS [PDF]

Trends in Differential Geometry, Complex Analysis and Mathematical Physics, 2009
This paper aims to relate some properties of photon-like objects, considered as spatially finite time-stable physical entities with dynamical structure, to well defined properties of the corresponding electromagnetic strains defined as Lie derivatives of the Minkowski (pseudo)metric with respect to the eigen vector fields of the Maxwell-Minkowski ...
Donev, Stoil, Tashkova, Maria
openaire   +2 more sources

Chiral Microneedle Arrays With Terahertz Chiroptical Activity With Chiral‐Plasmon‐Chiral‐Phonon Resonance

Advanced Materials, EarlyView.
ABSTRACT Microneedle arrays (MNAs) is a rapidly emerging technology with broad biomedical applications in drug delivery and biosensing. With sub‐millimeter dimensions and periodicity, MNAs possess geometries nearly ideal for biomedical devices operating within the terahertz (THz) spectral window.
Sang Hyun Lee, Hong Ju Jung, John Kim, Bum Chul Park, Caio V. C. R. da Silva, André F. de Moura, Nicholas A. Kotov   +6 more
wiley   +1 more source

Electromagnetic stress at the boundary: Photon pressure or tension? [PDF]

Science Advances, 2016
Whether light pulls or pushes a material boundary depends on the underlying microscopic structure.
Shubo Wang, Jack Ng, Meng Xiao, Che Ting Chan   +3 more
openaire   +4 more sources

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Polarization-independent Spatial Kramers-Kronig medium for omnidirectional reflectionless absorption of unpolarized light

Communications Physics
Spatial Kramers-Kronig (KK) media offer a possible route to obtain omnidirectional light absorption within a thin layer of material. However, the experimental realizations are typically limited to a specific polarization, i.e., either transverse electric
Quanping Li, Yu Luo, Jingjing Zhang, Yuan Gao, Jingxin Tang, Xiaojun Hu, Dexin Ye   +6 more
doaj   +1 more source