Results 51 to 60 of about 192,299 (340)

Collision-assisted Zeeman cooling of neutral atoms

, 2000
We propose a new method to cool gaseous samples of neutral atoms. The gas is confined in a non dissipative optical trap in the presence of an homogeneous magnetic field. The method accumulates atoms in the $m_F=0$ Zeeman sub-level.
Ferrari, Gabriele
core   +1 more source

Simulations of the angular dependence of the dipole-dipole interaction among Rydberg atoms [PDF]

, 2016
The dipole-dipole interaction between two Rydberg atoms depends on the relative orientation of the atoms and on the change in the magnetic quantum number.
Bigelow, Jacob L., Carroll, Thomas J., Noel, Michael W., Paul, Jacob T., Peleg, Matan, Sanford, Veronica L.   +5 more
core   +3 more sources

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

FEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke, Michal Banasik, Rokas Juodeikis, Martin J. Warren, Richard W. Pickersgill   +4 more
wiley   +1 more source

Special structures and properties of hydrogen nanowire confined in a single walled carbon nanotube at extreme high pressure

AIP Advances, 2012
Extensive ab initio molecular dynamics simulations indicate that hydrogen can be confined in single walled carbon nanotubes to form high density and high pressure H2 molecular lattice, which has peculiar shell and axial structures depending on the ...
Yueyuan Xia, Mingwen Zhao, Xiangdong Liu, Chen Song, Tao He, Jiaxiong Fang   +5 more
doaj   +1 more source

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

Bose-Einstein Condensate Driven by a Kicked Rotor in a Finite Box

, 2006
We study the effect of different heating rates of a dilute Bose gas confined in a quasi-1D finite, leaky box. An optical kicked-rotor is used to transfer energy to the atoms while two repulsive optical beams are used to confine the atoms.
, B Gutiérrez-Medina, H Kelkar, K Henderson, Liboff R. L., Lichtenberg A. L., M. G Raizen, T. C Li   +7 more
core   +2 more sources

Faraday spectroscopy of atoms confined in a dark optical trap [PDF]

, 2008
We demonstrate Faraday spectroscopy with high duty cycle and sampling rate using atoms confined to a blue-detuned optical trap. Our trap consists of a crossed pair of high-charge-number hollow laser beams, which forms a dark, box-like potential.
D. McGloin, Fredrik K. Fatemi, Mark Bashkansky, Matthew L. Terraciano, N. Friedman   +4 more
core   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

Advanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai, Xinrui Sarah Niu, Zhao Qin   +2 more
wiley   +1 more source

Ensemble Quantum Computation with atoms in periodic potentials

, 2004
We show how to perform universal quantum computation with atoms confined in optical lattices which works both in the presence of defects and without individual addressing.
E. Solano, J. I. Cirac, J. I. Cirac, K. G. H. Vollbrecht, M. A. Nielsen   +4 more
core   +1 more source