Results 121 to 130 of about 20,975 (356)

Helical Electron Beam Micro‐Bunching by High‐Order Modes in a Micro‐Plasma Waveguide

open access: yesAdvanced Science, EarlyView.
ABSTRACT Electron acceleration by a high‐power Laguerre‐Gaussian pulse in a micro‐plasma waveguide is investigated. When the incident laser travels in the waveguide, electrons on the wall are extracted into the vacuum core and accelerated by the longitudinal field of the waveguide mode.
Xingju Guo, Longqing Yi
wiley   +1 more source

Adam Smith. Skeptical Newtonianism, Disenchanted Republicanism, and the Birth of Social Science [PDF]

open access: yes, 1987
Both Adam Smith's epistemology and his politics head to a stalemate. The former is under the opposing pulls of an essentialist ideal of knowledge and of a pragmatist approach to the history of science. The latter still tries to provide a foundation for a
Cremaschi, Sergio Volodia Marcello
core   +2 more sources

Asymmetric Electrostrain/Electrobending in Piezoelectric Ceramics: Role of Defect Dipoles or Oxygen Vacancies

open access: yesAdvanced Science, EarlyView.
Defect‐configurational origins of the asymmetric apparent electrostrain are revealed in different piezoelectric ceramics via atomic‐scale visualization of defect configurations. Migration of oxygen vacancies leads to the electrobending effect in N2‐sintered BaTiO3, while defect dipoles in Ba0.99TiO2.99 generate true asymmetric electrostrain without ...
Jie Wang   +7 more
wiley   +1 more source

The Problems of Consciousness in the Studies of M.K. Mamardashvili and A.M. Pyatigorsky

open access: yesRUDN Journal of Philosophy
The research devoted to the studies of Merab Mamardashvili and Alexander Pyatigorsky, their philosophical approaches to understanding consciousness. M.K. Mamardashvili and A.M.
Oleg T. Ermishin
doaj   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

open access: yesAdvanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe   +4 more
wiley   +1 more source

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