Results 41 to 50 of about 9,788 (273)

Photon merging and splitting in electromagnetic field inhomogeneities [PDF]

Physical Review D, 2016
We investigate photon merging and splitting processes in inhomogeneous, slowly varying electromagnetic fields. Our study is based on the three-photon polarization tensor following from the Heisenberg-Euler effective action. We put special emphasis on deviations from the well-known constant field results, also revisiting the selection rules for these ...
Gies, Holger, Karbstein, Felix, Seegert, Nico   +2 more
openaire   +2 more sources

The Effect of Purcell Cavities on the Lifetime of Thermally Activated Delayed Fluorescent Emitters

Advanced Functional Materials, EarlyView.
A pressing challenge to OLED displays and lighting is to balance high efficiency and long operational lifetime in the deep blue spectrum. The Purcell effect can reduce the triplet density and hence the probability for destructive energy‐driven triplet annihilation events that limit the OLED lifetime. Here we study of the Purcell effect on two different
Sritoma Paul, Haonan Zhao, Collin N. Muniz, Mark E. Thompson, Stephen R. Forrest   +4 more
wiley   +1 more source

Design, Realization, and Testing of an Adaptable Folded Parallel Plate Waveguide Feeding Network

IEEE Open Journal of Antennas and Propagation
This paper presents a detailed analysis, realization, and testing of a low-height waveguide folded feeding structure that launches a quasi-TEM surface wave to feed structures such as leaky-waves, modulated metasurfaces and slotted waveguide antennas ...
Aqeela Saghir, Nicola Bartolomei, Cristian Della Giovampaola, Francesco Caminita, Luca Marcaccioli, Paola Farinelli, Giorgio Giordanengo   +6 more
doaj   +1 more source

Topologically protected broadband rerouting of propagating waves around complex objects

Nanophotonics, 2019
Achieving robust propagation and guiding of electromagnetic waves through complex and disordered structures is a major goal of modern photonics research, for both classical and quantum applications.
Hayran Zeki, Hassani Gangaraj Seyyed Ali, Monticone Francesco   +2 more
doaj   +1 more source

Leveraging Continuous Material Averaging for Inverse Electromagnetic Design

, 2018
Inverse electromagnetic design has emerged as a way of efficiently designing active and passive electromagnetic devices. This maturing strategy involves optimizing the shape or topology of a device in order to improve a figure of merit--a process which ...
Michaels, Andrew, Yablonovitch, Eli
core   +1 more source

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

Advanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park, Jewoong Lee, In‐Suk Choi, Changsoon Kim   +3 more
wiley   +1 more source

Real-time 3D temperature reconstruction in microwave cancer hyperthermia from scarce temperature measurements

Nature Communications
Oncological microwave hyperthermia is a clinically proven sensitizer of radio- and chemo-therapies; it acts by selectively increasing the temperature of tumor cells by means of antenna applicators.
Rossella Gaffoglio, Giorgio Giordanengo, Marco Righero, Marcello Zucchi, Maryam Firuzalizadeh, Giuseppe Musacchio Adorisio, Aurora Bellone, Alberto Vallan, Guido Perrone, Giuseppe Vecchi   +9 more
doaj   +1 more source

Plasmon-enhanced generation of non-classical light [PDF]

, 2018
Strong light-matter interactions enabled by surface plasmons have given rise to a wide range of photonic, optoelectronic and chemical functionalities.
Bozhevolnyi, Sergey I., Fernández-Domínguez, Antonio I., Mortensen, N. Asger   +2 more
core   +2 more sources

Atomic‐Scale Light Coupling Control in Ultrathin Photonic Membranes

Advanced Functional Materials, EarlyView.
Ultrathin photonic nanomembranes provide atomic‐scale control over the coupling between incident light and high‐Q photonic modes, enabling angstrom‐level resonance tuning and strong field confinement. When integrated with TMD monolayers, they further yield enhanced light–matter interactions, offering a versatile platform for advancing quantum photonics,
Chih‐Zong Deng, Chun‐Hao Chiang, Sunhao Shi, Jui‐Han Fu, Yen‐Ju Wu, Kuniaki Konishi, Vincent Tung, Chun‐Wei Chen, Ya‐Lun Ho   +8 more
wiley   +1 more source

Omnidirectional Circularly Polarized Thermal Radiation Enabled by Chiral Metasurface

Small Structures
Recently, thermal chiral metasurfaces have attracted significant attentions due to their remarkable ability to manipulate thermal radiation, finding broad applications in chiral imaging, and holographic technologies.
Lianjie Li, Bingtao Gao, Tianle Chen, Chong‐Kuong Ng, Yanxiang Wang, Qiang‐Kai‐Lai Huang, Kaile Sun, Yifan Shou, Yungui Ma, Hongsheng Chen, Ying Li   +10 more
doaj   +1 more source