Results 91 to 100 of about 118,470 (294)

Preliminary design of the Visible Spectro-Polarimeter for the Advanced Technology Solar Telescope

, 2012
The Visible Spectro-Polarimeter (ViSP) is one of the first light instruments for the Advanced Technology Solar Telescope (ATST). It is an echelle spectrograph designed to measure three different regions of the solar spectrum in three separate focal ...
Casini, Roberto, de Wijn, Alfred G., Huang, Pei, Nelson, Peter G.   +3 more
core   +1 more source

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

Advanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

More Meta-Stable Brane Configurations without D6-Branes

, 2007
We describe the intersecting brane configurations, consisting of NS-branes, D4-branes(and anti-D4-branes), in type IIA string theory corresponding to the meta-stable nonsupersymmetric vacua of N=1 SU(N_c) x SU(N_c') x SU(N_c'') gauge theory with ...
Aganagic, Ahn, Ahn, Ahn, Ahn, Ahn, Ahn, Ahn, Ahn, Ahn, Ahn, Antebi, Argurio, Argurio, Bena, Bertoldi, Brodie, Callan, Changhyun Ahn, Franco, Garcia-Etxebarria, Giveon, Giveon, Heckman, Intriligator, Kitano, Lopez, Marsano, Murthy, Ooguri, Shih, Tatar, Verlinde, Wijnholt   +33 more
core   +2 more sources

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

Advanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa, Lin‐Ding Yuan, Stephen D. Wilson, James M. Rondinelli   +3 more
wiley   +1 more source

A Bose-condensed, simultaneous dual-species Mach–Zehnder atom interferometer

New Journal of Physics, 2014
This paper presents the first realization of a simultaneous ^87 Rb– ^85 Rb Mach–Zehnder atom interferometer with Bose-condensed atoms. A number of ambitious proposals for precise terrestrial and space based tests of the weak equivalence principle rely on
C C N Kuhn, G D McDonald, K S Hardman, S Bennetts, P J Everitt, P A Altin, J E Debs, J D Close, N P Robins   +8 more
doaj   +1 more source

Casimir force between designed materials: what is possible and what not

, 2005
We establish strict upper limits for the Casimir interaction between multilayered structures of arbitrary dielectric or diamagnetic materials. We discuss the appearance of different power laws due to frequency-dependent material constants.
Born M., C Henkel, Casimir H. B. G., Israelachvili J. N., K Joulain, Landau L. D., Lifshitz E. M., Lifshitz E. M., Ramakrishna S. A., Richmond P., Smith D. R., Tomaš M. S., Yeh P., Zhou F.   +13 more
core   +2 more sources

Reflection of OH molecules from magnetic mirrors

New Journal of Physics, 2008
We have reflected a Stark-decelerated beam of OH molecules under normal incidence from mirrors consisting of permanent magnets. Two different types of magnetic mirrors have been demonstrated. A long-range flat mirror made from a large disc magnet has been used to spatially focus the reflected beam in the longitudinal direction ("bunching").
Metsala, M., Gilijamse, J.J., Hoekstra, S., van de Meerakker, S.Y.T., Meijer, G.J.M., Meijer, G.J.M.   +5 more
openaire   +4 more sources

Stacking‐Engineered Magnonic Topology and Transport in Honeycomb Homobilayers

Advanced Functional Materials, EarlyView.
ABSTRACT Topological magnons have emerged as a promising platform for dissipationless bosonic transport. However, a straightforward and effective strategy to engineer such topological states in real materials has yet to be fully realized. Here, a general scheme for controlling magnonic topological states via stacking engineering in van der Waals ...
Xiaoran Feng, Yingxi Bai, Bo Yuan, Ying Dai, Baibiao Huang, Chengwang Niu, Xiaotian Wang   +6 more
wiley   +1 more source

The Orbitron: A crossed-field device for co-confinement of high energy ions and electrons

AIP Advances
To explore the confinement of high-energy ions above the space charge limit, we have developed a hybrid magnetic and electrostatic confinement device called an Orbitron.
M. Affolter, R. Thompson, S. Hepner, E. C. Hayes, V. Podolsky, M. Borghei, J. Carlsson, A. Gargone, D. Merthe, E. McKee, R. Langtry   +10 more
doaj   +1 more source

Bioinspired Stabilization of Fluorescent Au@SiO2 Tracers for Multimodal Biological Imaging

Advanced Functional Materials, EarlyView.
This study demonstrates a bioinspired stabilization strategy for fluorescent gold‐silica nanoparticles. Inspired by natural biosilica maturation, high‐temperature calcination transforms the silica shells, preventing dissolution in cell culture media and intracellular environments.
Wang Sik Lee, Henry Lee, Patricia Taladriz‐Blanco, Dimitri Vanhecke, Barbara Rothen‐Rutishauser, Alke Petri‐Fink   +5 more
wiley   +1 more source