Results 61 to 70 of about 12,012,323 (242)

Floquet theory of radical pairs in radiofrequency magnetic fields. [PDF]

Journal of Chemical Physics, 2016
We present a new method for calculating the product yield of a radical pair recombination reaction in the presence of a weak time-dependent magnetic field. This method successfully circumvents the computational difficulties presented by a direct solution
H. Hiscock, D. Kattnig, D. Manolopoulos, P. Hore   +3 more
semanticscholar   +1 more source

Liquid‐Crystal‐Based Reconfigurable Intelligent Surface for 7 GHz Mobile Communication

Advanced Materials Technologies, EarlyView.
The glass‐based liquid‐crystal reconfigurable intelligent surface (LC‐RIS) integrates active‐matrix driving and blind‐greedy phase optimization within a 5G‐NR OFDM framework. This enables continuously tunable and autonomous enhancement of wireless coverage. Leveraging the transparency and manufacturability of liquid crystal panels, it is ideally suited
Tien‐Lun Ting, Yuh‐Chyi Chang, Yi‐Chan Hung, Cheng‐Yuan Hsiao, Chao‐Kai Wen, Tsung‐Hsien Lin   +5 more
wiley   +1 more source

Photoinduced tunable anomalous Hall and Nernst effects in tilted Weyl semimetals using Floquet theory [PDF]

, 2018
In this paper, we discuss the effect of a periodically driving circularly polarized laser beam in the high-frequency limit, on the band structure and thermal transport properties of type-I and type-II Weyl semimetals (WSMs).
A. Menon, D. Chowdhury, B. Basu
semanticscholar   +1 more source

The universal floquet modes of (quasi)-breathers and oscillons

Physics Letters B
Just as linearized perturbations of time-independent configurations can be decomposed into normal modes, those of periodic systems can be decomposed into Floquet modes, which each evolve by a fixed phase over one period.
Jarah Evslin, Tomasz Romańczukiewicz, Katarzyna Sławińska, Andrzej Wereszczyński   +3 more
doaj   +1 more source

Floquet stroboscopic divisibility in non-Markovian dynamics

New Journal of Physics, 2018
We provide a general description of a time-local master equation for a system coupled to a non-Markovian reservoir based on Floquet theory. This allows us to have a divisible dynamical map at discrete times, which we refer to as Floquet stroboscopic ...
Victor M Bastidas, Thi Ha Kyaw, Jirawat Tangpanitanon, Guillermo Romero, Leong-Chuan Kwek, Dimitris G Angelakis   +5 more
doaj   +1 more source

Ultrafast Optoacoustics Reveals Intricate 3D Anisotropic Elasticity in Nanocrystalline Membranes

Advanced Science, EarlyView.
Ultrafast optoacoustic spectroscopy combined with a Sagnac interferometer enables non‐contact, simultaneous characterization of thickness and the full three‐dimensional anisotropic elastic constants in freestanding nanocrystalline copper membranes. By capturing gigahertz Lamb waves and zero‐group‐velocity resonances followed by SAFE‐GA inversion, the ...
Shuchang Zhang, Yi He, Guojie Luo, Jie Huang, Pak San Yip, Haoyu Cui, Wanglinhan Zhang, Zijian Wang, Lin Ye, Yang Lu, Zhongqing Su, Yehai Li   +11 more
wiley   +1 more source

Radiation-induced dynamical formation of Floquet-Bloch bands in Dirac Hamiltonians

New Journal of Physics
Recent experiments, combing ultrafast strong-field irradiation of surfaces with time- and angle-resolved photoemission spectroscopy, allow for monitoring the time-dependent charge carrier dynamics and the build-up of transient sidebands due to the ...
Yuriko Baba, Vanessa Junk, Wolfgang Hogger, Francisco Domínguez-Adame, Rafael A Molina, Klaus Richter   +5 more
doaj   +1 more source

Hierarchical Physical‐Cyber Encryption via Metasurface‐Encoded Holographic Keys

Advanced Science, EarlyView.
ABSTRACT Physical‐layer encryption based on metasurfaces has emerged as a promising alternative to conventional algorithmic cryptography by embedding security into physical processes. However, most existing metasurface‐based encryption schemes operate within single‐stage or static frameworks, where correct physical illumination directly reveals the ...
Zhen Liu, Changhong Dai, Wei Zhu, Ruisheng Yang, Bohan Zhang, Lei Zhang, Bobo Du, Shengxiang Wang, Guangwei Hu   +8 more
wiley   +1 more source

Floquet Theory for Parabolic Differential Equations

Journal of Differential Equations, 1994
The Floquet theorem is extended to the scalar parabolic equation \[ u_ t = u_{xx} + a(t,x) u_ x + b(t,x)u, \quad ...
Chow, S.N., Lu, K.N., Malletparet, J.
openaire   +1 more source

An overview of the truncated Floquet wave diffraction theory [PDF]

2006 IEEE Antennas and Propagation Society International Symposium, 2006
This paper summarizes the research activities conducted at the University of Siena during the past 10 years on the truncated Floquet wave diffraction theory under the continuous guidance of Professor Felsen who recently passed away. This paper analyzed and validated the diffraction phenomena in both the frequency and time domains pertaining to large ...
ALBANI M., CAPOLINO F., CUCINI A., MACI S., MARIOTTINI F., MARTINI E., POLEMI A., TOCCAFONDI A.   +7 more
openaire   +3 more sources