Results 71 to 80 of about 1,452,975 (287)

The Realization of Multidirectional, Free‐Standing 3D Plasmonic Nanostructures via 3D Nanoprinting: A Case Study of Fractal Antennas

Advanced Functional Materials, EarlyView.
Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker, Robert Winkler, Ulrich Hohenester, Evelin Fisslthaler, Daniel Knez, Gerald Kothleitner, Georg Haberfehlner   +6 more
wiley   +1 more source

Time as a Quantum Observable, Canonically Conjugated to Energy, and Foundations of Self-Consistent Time Analysis of Quantum Processes

Advances in Mathematical Physics, 2009
Recent developments are reviewed and some new results are presented in the study of time in quantum mechanics and quantum electrodynamics as an observable, canonically conjugate to energy. This paper deals with the maximal Hermitian (but nonself-adjoint)
V. S. Olkhovsky
doaj   +1 more source

The relation between classical and quantum electrodynamics [PDF]

, 2008
In this article it is presented the idea that quantum electrodynamics presents intrinsic limitations in the description of physical processes that makes it impossible to recover from it the type of description we have with classical electrodynamics.
Bacelar Valente, Mario
core  

Some Recent Advances in Bound-State Quantum Electrodynamics

, 2005
We discuss recent progress in various problems related to bound-state quantum electrodynamics: the bound-electron g factor, two-loop self-energy corrections and the laser-dressed Lamb shift.
Appelquist S., Bonciani P., Bonciani P., Caswell G.P., Cohen-Tannoudji R., Draganić J.R., Drake R.A., Eides V.A., Eides V.A., Eikema J., Evers U.D., Grotch R.A., Hughes T., Häffner T., Ivanov S.G., J Evers, Jentschura J., Jentschura J., Karplus N.M., Karshenboim S.G., Kinoshita W.B., Mastrolia E., Melnikov T.V., Pachucki U.D., Pachucki U.D., Pineda, Reichert M., U D Jentschura, Verdú S., Yerokhin P., Yerokhin P.   +30 more
core   +2 more sources

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

On the Emergence of the Coulomb Forces in Quantum Electrodynamics

Advances in High Energy Physics, 2017
A simple transformation of field variables eliminates Coulomb forces from the theory of quantum electrodynamics. This suggests that Coulomb forces may be an emergent phenomenon rather than being fundamental.
Jan Naudts
doaj   +1 more source

Stochastic Electrodynamics: The Closest Classical Approximation to Quantum Theory

Atoms, 2019
Stochastic electrodynamics is the classical electrodynamic theory of interacting point charges which includes random classical radiation with a Lorentz-invariant spectrum whose scale is set by Planck’s constant.
Timothy H. Boyer
doaj   +1 more source

Large N external-field quantum electrodynamics

Journal of High Energy Physics, 2022
We advocate the study of external-field quantum electrodynamics with N charged particle flavors. Our main focus is on the Heisenberg-Euler effective action for this theory in the large N limit which receives contributions from all loop orders.
Felix Karbstein
doaj   +1 more source

An unknown story: Majorana and the Pauli-Weisskopf scalar electrodynamics

, 2007
An account is given of an interesting but unknown theory by Majorana regarding scalar quantum electrodynamics, elaborated several years before the known Pauli-Weisskopf theory.
Amaldi, Anderson, Blackett, Born, De Gregorio, Dirac, Dirac, Dirac, Dirac, Dirac, Esposito, Esposito, Fermi, Fermi, Fermi, Fermi, Fermi, Fermi, Fermi, Heisenberg, Heisenberg, Heitler, Jordan, Jordan, Jordan, Miller, Pauli, Pauli, Rasetti, Recami, Weisskopf, Weyl, Weyl, Wick   +33 more
core   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source