Results 61 to 70 of about 40,586 (284)

Formulation of the twisted-light–matter interaction at the phase singularity: The twisted-light gauge [PDF]

, 2014
Twisted light is light carrying orbital angular momentum. The profile of such a beam is a ring-like structure with a node at the beam axis, where a phase singularity exists.
Kuhn, Tilmann, Quinteiro, Guillermo Federico, Reiter, D. E.   +2 more
core   +2 more sources

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Exact gravitational plane waves and two-dimensional gravity

Physics Letters B, 2018
We discuss dynamical aspects of gravitational plane waves in Einstein theory with massless scalar fields. The general analytic solution describes colliding gravitational waves with constant polarization, which interact with scalar waves and, for generic ...
Jorge G. Russo
doaj   +1 more source

The Unbearable Beingness of Light, Dressing and Undressing Photons in Black Hole Spacetimes

, 2012
Gravitational tidal forces acting on the virtual e+ e- cloud surrounding a photon endow spacetime with a non-trivial refractive index. This has remarkable properties unique to gravitational theories including superluminal low-frequency propagation, in ...
Blau M., GRAHAM M. SHORE, Hollowood T. J., Hollowood T. J., Hollowood T. J., Kundera M., TIMOTHY J. HOLLOWOOD, Wilczek F.   +7 more
core   +1 more source

Realization of an all-optical zero to π cross-phase modulation jump [PDF]

, 2009
We report on the experimental demonstration of an all-optical π cross-phase modulation jump. By performing a preselection, an optically induced unitary transformation, and then a postselection on the polarization degree of freedom, the phase of the ...
Camacho, Ryan M., Dixon, P. Ben, Glasser, Ryan T., Howell, John C., Jordan, Andrew N.   +4 more
core   +2 more sources

Hidden singularities in spontaneously polarized molecular solids

The Journal of Chemical Physics, 2023
Films of dipolar molecules formed by physical vapor deposition are, in general, spontaneously polarized, with implications ranging from electron transfer in molecular optoelectronic devices to the properties of astrochemical ices in the interstellar medium.
Andrew Cassidy, Frank P. Pijpers, David Field   +2 more
openaire   +5 more sources

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

FEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová, Grigorii Rakhalskii, Miroslav Almáši   +2 more
wiley   +1 more source

Theory of Tunneling Anomaly in Superconductor above Paramagnetic Limit

, 1998
We study the tunneling density of states (DoS) in the superconducting systems driven by Zeeman splitting $E_Z$ into the paramagnetic phase. We show that, even though the BCS gap disappears, superconducting fluctuations cause a strong DoS singularity in ...
A. A. Abrikosov, A. M. Clogston, B L. Altshuler, B. L. Altshuler, B. L. Altshuler, B. S. Chandrasekhar, C. T. Black, F. Braun, H. A. Kramers, Hae-Young Kee, I. Giaever, I. L. Aleiner, I. L. Aleiner, K. K. Likharev, L. N. Cooper, M. Tinkham, N. W. Ashcroft, O. Agam, P. A. Lee, P. Fulde, S. Hikami, S. Hikami, U. Sivan, V. E. Kravtsov, W. Wu, Ya. M. Blanter, Ya. M. Blanter   +26 more
core   +1 more source

Geometry and Statistics of Cosmic Microwave Polarization [PDF]

, 1999
Geometrical and statistical properties of polarization of CMB are analyzed. Singular points of the vector field which describes CMB polarization are found and classified. Statistical distribution of the singularities is studied.
A. D. DOLGOV, A. G. DOROSHKEVICH, Basko M. A., D. I. NOVIKOV, I. D. NOVIKOV, Kamionkowski M., Kamionkowski M., Polnarev A. G., Zaldarriaga M.   +8 more
core   +3 more sources

Cutaneous Melanoma Drives Metabolic Changes in the Aged Bone Marrow Immune Microenvironment

Aging and Cancer, EarlyView.
Melanoma, the deadliest form of skin cancer, increasingly affects older adults. Our study reveals that melanoma induces changes in iron and lipid levels in the bone marrow, impacting immune cell populations and increasing susceptibility to ferroptosis.
Alexis E. Carey, Murilo Ramos Rocha, Cheyenne Palm, Vania Wang, Denys Balandin, Ethan Black, Kevin Y. Zhang, Fan Huang, Daniel J. Zabransky, Yash Chhabra, Mareike Peters, Gabriel Ghiaur, Ashani Weeraratna   +12 more
wiley   +1 more source