Results 111 to 120 of about 228,090 (281)

Numerical self-consistent stellar models of thin disks

, 2005
We find a numerical self-consistent stellar model by finding the distribution function of a thin disk that satisfies simultaneously the Fokker-Planck and Poisson equations.
Aarseth, Ashurov, Cohn, de Zeeuw, de Zeeuw, Eddington, Freeman, Hunter, Jeans, Joshi, Kalnajs, King, Kuzmin, Letelier, M. Ujevic, Mestel, Michie, Michie, Miller, Miller, Miyamoto, Ng, Nishida, P. S. Letelier, Plummer, Rosenbluth, Schwarzschild, Statler, Stone, Takahashi, Takahashi, Teuben, Theuns, Toomre, Ujevic, van Albada, van de Ven, Vandervoort, Vogt, Watanabe, Wilkinson, Yepes   +41 more
core   +1 more source

Ruddlesden–Popper Defects Act as a Free Surface: Role in Formation and Photophysical Properties of CsPbI3

Advanced Materials, EarlyView.
This work investigates Ruddlesden–Popper (RP) defects in vapor‐deposited CsPbI3 thin films using electron microscopy, density functional theory, and optoelectronic measurements. The atomic positions at the planar defect are found comparable to those of a free surface, revealing their role in phase stabilization.
Weilun Li, Qimu Yuan, Yinan Chen, Joshua R. S. Lilly, Marina R. Filip, Laura M. Herz, Michael B. Johnston, Joanne Etheridge   +7 more
wiley   +1 more source

The Orbit and Dynamical Mass of Polaris: Observations with the CHARA Array

The Astrophysical Journal
The 30 yr orbit of the Cepheid Polaris has been followed with observations by the Center for High Angular Resolution Astronomy (CHARA) Array from 2016 through 2021.
Nancy Remage Evans, Gail H. Schaefer, Alexandre Gallenne, Guillermo Torres, Elliott P. Horch, Richard I. Anderson, John D. Monnier, Rachael M. Roettenbacher, Fabien Baron, Narsireddy Anugu, James W. Davidson Jr., Pierre Kervella, Garance Bras, Charles Proffitt, Antoine Mérand, Margarita Karovska, Jeremy Jones, Cyprien Lanthermann, Stefan Kraus, Isabelle Codron, Howard E. Bond, Giordano Viviani   +21 more
doaj   +1 more source

Flexible Selenium Nanowires with Tuneable Electronic Bandgaps

Advanced Materials, EarlyView.
Nanotubes serve as effective test tubes for selenium nanowires, as their diameter precisely controls the width of the nanowires and the Se─Se bonding, resulting in a variety of different structures. An electron beam can be used to modify the nanotubes, allowing real‐time observation of the nanowire extrusion process. Additionally, optically transparent
William J. Cull, Quentin M. Ramasse, Johannes Biskupek, Graham A. Rance, Ian Cardillo‐Zallo, Benjamin L. Weare, Michael W. Fay, R. Roy Whitney, Lyndsey R. Scammell, Jesum Alves Fernandes, Ute Kaiser, Amalia Patanè, Andrei N. Khlobystov   +12 more
wiley   +1 more source

Long‐Range Spin Transport in Chiral Gold

Advanced Materials, EarlyView.
It is demonstrated that in chiral gold film, spin information can be transferred to distances of several microns at room temperature. The conduction of spins is accompanied by the Hall effect that exists without applying an external magnetic field. The spin diffusion length is consistent with the frequency‐dependent Hall effect which indicates spin ...
Tapan Kumar Das, Offek Marelly, Shira Yochelis, Yossi Paltiel, Ron Naaman, Jonas Fransson   +5 more
wiley   +1 more source

How Are the Abnormally Hot Chromosphere and Corona Heated by the Solar Magnetic Fields?

The Astrophysical Journal
The corona is a structure possessed by stars, including the Sun. The abnormal heating of the solar corona and chromosphere is one of the greatest mysteries in modern astronomy.
K. J. Li, J. C. Xu, W. Feng, J. L. Xie, X. J. Shi, L. H. Deng   +5 more
doaj   +1 more source

Flux and color variations of the quadruply imaged quasar HE 0435-1223

, 2011
We present VRi photometric observations of the quadruply imaged quasarHE0435-1223, carried out with the Danish 1.54 m telescope at the La Silla Observatory.
Ricci, D., Anguita A., Timo
openaire   +4 more sources

Measuring space-time variation of the fundamental constants with redshifted submillimetre transitions of neutral carbon

, 2011
We compare the redshifts of neutral carbon and carbon monoxide in the redshifted sources in which the fine structure transition of neutral carbon, [CI], has been detected, in order to measure space-time variation of the fundamental constants.
A. A. Stark, A. Tanna, Ao, Barvainis, Berengut, Bertoldi, Blain, Blain, Bothwell, Casey, Cooksy, Coppin, Cowie, Cox, Curran, Curran, Daddi, Daddi, Danielson, De Breuck, De Breuck, Downes, Downes, Emonts, Engargiola, F. E. Koch, Frayer, Frayer, Frayer, Garrett, Genzel, Gerin, Greve, Hainline, Henkel, Ikeda, Iono, Iono, Israel, Ivison, J. C. Berengut, J. K. Webb, Kanekar, Klamer, Klein, Kneib, Lestrade, Lestrade, Levshakov, Levshakov, Maiolino, Maiolino, Murphy, Murphy, Ofek, Ohta, Ojha, Omont, Papadopoulos, Papadopoulos, Papadopoulos, Pety, Riechers, Riechers, Riechers, S. J. Curran, Scoville, Sheth, Solomon, Spergel, Stutzki, Tacconi, Tacconi, Uzan, V. V. Flambaum, Walter, Walter, Weiß, Weiß, Weiß, White, Willott, Yamamoto, Yan   +83 more
core   +1 more source

Development and Optimization of Micro‐Nanotopographical Platforms for Surface Enhanced Raman Scattering Biomolecular Detection

Advanced Materials Interfaces, EarlyView.
Lithographically defined concentric micro‐ and nanostructures systematically designed and fabricated as reproducible arrays for Surface‐enhanced Raman spectroscopy applications. Abstract Topologically designed micro‐ and nanostructured surface‐enhanced Raman scattering (SERS) substrates propel the advancements of innovative applications, including ...
David Femi Odetade, Jonathan J. S. Rickard, Pola Goldberg Oppenheimer   +2 more
wiley   +1 more source

Organic Ferroelectric Synaptic Transistors for Neural Image Recognition Networks

Advanced Materials Interfaces, EarlyView.
All organic transistors, where both the dielectric and semiconducting layers are polymeric, are developed as electrical synaptic devices. Two copolymers of PVDF as the dielectric layer with large differences in their saturation polarizability and memory window are chosen.
Evan Restuccia, Arash Ghobadi, Suchismita Guha   +2 more
wiley   +1 more source