Results 81 to 90 of about 1,121,804 (297)

Strong enhancement of drag and dissipation at the weak- to strong- coupling phase transition in a bi-layer system at a total Landau level filling nu=1

, 2001
We consider a bi-layer electronic system at a total Landau level filling factor nu =1, and focus on the transition from the regime of weak inter-layer coupling to that of the strongly coupled (1,1,1) phase (or ''quantum Hall ferromagnet'').
A. M. Dykhne, Ady Stern, Ady Stern, B. I. Halperin, D. J. Bergman, I. B. Spielman, I. B. Spielman, I. Ussishkin, J. P. Eisenstein, John Schliemann, K. M. Brown, L. Balents, M. P. Lilly, Michael M. Fogler, R. Cote, S. He, S. Sakhi, Y. B. Kim, Y. B. Kim, Yong Baek Kim   +19 more
core   +1 more source

Field induced phase transition in the few photon regime [PDF]

, 2016
Some features of the field induced phase transition accompanied by the vacuum creation of an electron-positron plasma (EPP) in strong time-dependent electric fields have been discussed in the work [1] in the domain of the tunneling mechanism ($\omega \ll
Blaschke, D. B., Juchnowski, L., Kaempfer, B., Otto, A., Panferov, A. D., Smolyansky, S. A., Titov, A. I.   +6 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Topologically non-trivial Floquet band structure in a system undergoing photonic transitions in the ultra-strong coupling regime

, 2015
We consider a system of dynamically-modulated photonic resonator lattice undergoing photonic transition, and show that in the ultra-strong coupling regime such a lattice can exhibit non-trivial topological properties, including topologically non-trivial ...
Fan, Shanhui, Yuan, Luqi
core   +1 more source

New Regime for Dense String Networks [PDF]

, 2000
We uncover a new transient regime that reconciles the apparent inconsistency of the Martins Shellard one scale damped string evolution model with the initial conditions predicted by the Kibble mechanism for string formation in a second order phase ...
Aulakh, Charanjit S.
core   +3 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

The vortex depinning transition in untwinned YBaCuO using complex impedance measurements

, 2003
We present surface impedance measurement of the vortex linear response in a large untwinned YBCO crystal. The depinning spectra obtained over a broad frequency range (100 Hz- 30 MHz) are those of a surface pinned vortex lattice with a free flux flow ...
A. Pautrat, A.I. Rykov, Alais, B. Andrewjewski, C. Goupil, Campbell, Ch. Simon, Lütke-Entrup, Pautrat, Pautrat, S. Tajima, Sonin, Volovik   +12 more
core   +2 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS 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, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Capillary focusing close to a topographic step: Shape and instability of confined liquid filaments

, 2014
Step-emulsification is a microfluidic technique for droplet generation which relies on the abrupt decrease of confinement of a liquid filament surrounded by a continuous phase.
Afkhami, S., Hein, M., Kondic, L., Seemann, R.   +3 more
core   +1 more source