Results 31 to 40 of about 809,191 (273)

Advances in nonlinear metasurfaces for imaging, quantum, and sensing applications

Nanophotonics, 2023
Metasurfaces, composed of artificial meta-atoms of subwavelength size, can support strong light–matter interaction based on multipolar resonances and plasmonics, hence offering the great capability of empowering nonlinear generation.
Zheng Ze, Rocco Davide, Ren Hang, Sergaeva Olga, Zhang Yipei, Whaley K. Birgitta, Ying Cuifeng, de Ceglia Domenico, De-Angelis Constantino, Rahmani Mohsen, Xu Lei   +10 more
doaj   +1 more source

Spontaneous Current Generation in Cosmic Strings

, 1993
It is shown that in models including the standard electroweak theory and for some particular values of the underlying parameters, electric currents can be spontaneously generated in cosmic strings, without the need of any external field (e.g., electric ...
PETER, Patrick
core   +1 more source

Dynamical Symmetry Breaking in Planar QED [PDF]

, 2000
We investigate (2+1)-dimensional QED coupled with Dirac fermions both at zero and finite temperature. We discuss in details two-components (P-odd) and four-components (P-even) fermion fields.
Corwall J M, Deser S, Farakos K, Farakos K, Gradshteyn I S, Gusynin V, Jackiw R, Kanemura S, Luigi Tedesco, Niemi A, Niemi A T, Paolo Cea, See, See, Shpagin A V, Umezawa H   +15 more
core   +2 more sources

Historical paradigm shifts in defining life: from spontaneous generation and vitalism to the Pasteurian Wall and the quest for artificial creation

Frontiers in Synthetic Biology
For much of recorded history, the question “Where does life come from?” was answered with certainty: Aristotle’s doctrine of spontaneous generation and staged “ensoulment” defined both natural philosophy and Christian scholasticism.
Nediljko Budisa, David B. Levin
doaj   +1 more source

Un-LINQed: Spontaneous extrusion of newer generation implantable loop recorders

Indian Pacing and Electrophysiology Journal, 2020
Background: Insertable cardiac monitors (ICMs) are often used for long-term monitoring of cardiac rhythm. The Medtronic’s LINQ Reveal ™ is a new generation wireless, automated, and patient responsive subcutaneous ECG monitoring device.
Joseph Zakhar, Thomas J. Blount, Anil K. Gehi, Sunita J. Ferns   +3 more
doaj   +1 more source

Universal spatiotemporal dynamics of spontaneous superfluidity breakdown in the presence of synthetic gauge fields

, 2016
According to the famous Kibble-Zurek mechanism (KZM), the universality of spontaneous defect generation in continuous phase transitions (CPTs) can be understood by the critical slowing down.
Lee, Chaohong, Qin, Xizhou, Wu, Shuyuan, Xu, Jun   +3 more
core   +1 more source

Amplified spontaneous emission pulses for high-power supercontinuum generation

The Journal of Engineering, 2016
The authors demonstrate an incoherent light source based on a reflective semiconductor optical amplifier as pump for high-power supercontinuum generation for the first time.
Huan Huan Liu, Kin Kee Chow
doaj   +1 more source

Observation of a New Mechanism of Spontaneous Generation of Magnetic Flux in a Superconductor

, 2004
We report the discovery of a new mechanism of spontaneous generation of a magnetic flux in a superconductor cooled through $T_c$. The sign of the spontaneous flux changes randomly from one cooldown to the next, and follows a Gaussian distribution.
Ariel Maniv, Bernd-Uwe Runge, Björn Biehler, Boris Shapiro, Emil Polturak, Gad Koren, Irena Shapiro, Paul Leiderer, T. W. B. Kibble, V. L. Ginzburg, V. L. Ginzburg, Yuri Bliokh   +11 more
core   +1 more source

Spontaneous polariton currents in periodic lateral chains [PDF]

, 2017
We predict spontaneous generation of superfluid polariton currents in planar microcavities with lateral periodic modulation of both potential and decay rate.
Altshuler, B. L., Kavokin, A. V., Liew, T. C. H., Nalitov, A. V., Rubo, Y. G.   +4 more
core   +2 more sources

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source