Results 51 to 60 of about 397,923 (311)

Design of microcavity resonators for single-atom detection [PDF]

open access: yes, 2007
Whispering gallery modes of a microdisk resonator are useful for the optical detection of single rubidium and cesium atoms near the surface of a substrate. Light is coupled into two high-Q whispering-gallery modes of the disk which can provide attractive
Rosenblit, Michael   +4 more
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Entanglement induced by two-mode thermal noise taking into account the dipole-dipole interaction and atomic coherence

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2013
The entanglement of two two-level atoms with the nondegenerate two-photon transitions interacting with two-mode thermal field in lossless cavity has been considered. The possibility of entanglement degree growth in the presence of an atomic coherence and
E. G. Mangulova, E. K. Bashkirov
doaj   +3 more sources

Emergent Dark States from Superradiant Dynamics in Multilevel Atoms in a Cavity

open access: yesPhysical Review X, 2022
We investigate the collective decay dynamics of atoms with a generic multilevel structure (angular momenta F↔F^{′}) coupled to two light modes of different polarization inside a cavity.
A. Piñeiro Orioli   +2 more
doaj   +1 more source

Cellular Automata Simulations for the System of Two-Level Atoms Placed in Two-Dimensional Cavity [PDF]

open access: yes, 2013
In this paper, using one of the most effective simulation methods, namely the cellular automata formalism, we simulate the dynamics of a system which is composed of a large number of two-level atoms placed in a two-dimensional cavity.
Nguyen T.V.
core  

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

open access: yesFEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Scattering of a single plasmon polariton by multiple atoms for in-plane control of light

open access: yesNanophotonics, 2020
We study the interaction of a single photon in a surface plasmon polariton mode with multiple atoms. We propose a system of two atoms to achieve a tunable scattering from subscattering to superscattering regimes by changing the angle of the incident ...
Rituraj, Orenstein Meir, Fan Shanhui
doaj   +1 more source

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

open access: yesFEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas   +6 more
wiley   +1 more source

Two-Photon Collective Atomic Recoil Lasing

open access: yesAtoms, 2015
We present a theoretical study of the interaction between light and a cold gasof three-level, ladder configuration atoms close to two-photon resonance. In particular, weinvestigate the existence of collective atomic recoil lasing (CARL) instabilities in ...
James A. McKelvie, Gordon R.M. Robb
doaj   +1 more source

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