Results 41 to 50 of about 3,703 (156)

Deriving Telescope Mueller Matrices Using Daytime Sky Polarization Observations

, 2011
Telescopes often modify the input polarization of a source so that the measured circular or linear output state of the optical signal can be signficantly different from the input.
Berk A., Collett E., Cronin T. W., Dahlberg A. R., David M. Harrington, del Toro Iniesta J. C., J. R. Kuhn, Joos F., Nagaraju K., Pomozi I., Pust N. J., Roelfsema R., Shannon Hall, Shaw J. A., Socas-Navarro H.   +14 more
core   +1 more source

Symmetry of Anomalous Dimension Matrices for Colour Evolution of Hard Scattering Processes

, 2005
In a recent paper, Dokshitzer and Marchesini rederived the anomalous dimension matrix for colour evolution of $gg \to gg$ scattering, first derived by Kidonakis, Oderda and Sterman.
J.R. Forshaw, Michael H Seymour, R.B. Appleby, Yu.L. Dokshitzer   +3 more
core   +2 more sources

Metasurfaces and Metadevices for Topological Electromagnetic Waves

Advanced Physics Research, EarlyView.
Optical topologies refer to diverse topological localized structures made by diverse parameters of light fields, such as vortices, skyrmions, and hopfions. This article navigates a direction of metasurface‐based integrated devices for generation, manipulation and detection of novel topologies of light, which would be a rapidly growing interdisciplinary
Rensheng Xie, Nilo Mata‐Cervera, Xi Xie, Yijie Shen   +3 more
wiley   +1 more source

Development of a Numeric Predictor-Corrector Aerocapture Guidance for Direct Force Control [PDF]

Direct force control, where the angle of attack and sideslip angle are modulated, has been proposed as an alternative to bank angle control for aero-assist maneuvers.
Cerimele, Christopher J., Matz, Daniel A.   +1 more
core   +1 more source

One Metasurface for Four‐Channel Terahertz Wavefront Manipulation Based on Vanadium Dioxide

Advanced Physics Research, EarlyView.
This article presents a thermally reconfigurable metasurface utilizing vanadium dioxide (VO2) to dynamically switch between four independent wavefront‐manipulation channels. By synergizing geometric and propagation phases, the platform enables spin‐decoding for circularly polarized waves and polarization multiplexing for linearly polarized waves ...
Zhaofeng Yang, Jin Chen, Feilong Yu, Rongsheng Chen, Rong Jin, Guanhai Li, Xiaoshuang Chen, Wei Lu   +7 more
wiley   +1 more source

Metalens‐Enabled Twisted Chromatic Dispersion

Advanced Physics Research, EarlyView.
We successfully demonstrate visible broadband twisted dispersion metalenses. As a proof of concept, we realized two distinct devices: the conical helical and the spring‐like dispersion‐controlled metalenses. These results rigorously validate the universality of our approach in customizing arbitrary continuous 3D dispersion trajectories, thereby ...
Shiyu Zheng, Boyan Fu, Hong Zhang, Shuming Wang   +3 more
wiley   +1 more source

The AIROscope pointing and stabilization system [PDF]

The AIROscope pointing and stabilization system is described. The system is configured with three gimbal axes and rate integrating gyro stabilization to provide a stable platform for infrared astronomy.
Lorell, K. R., Murphy, J. P.
core   +1 more source

Many Body Theory of Charge Transfer in Hyperthermal Atomic Scattering

, 1992
We use the Newns-Anderson Hamiltonian to describe many-body electronic processes that occur when hyperthermal alkali atoms scatter off metallic surfaces. Following Brako and Newns, we expand the electronic many-body wavefunction in the number of particle-
A. G. Borisov, A. J. Algra, B. H. Cooper, B. Hird, B. Rasser, C. A. DiRubio, C. A. DiRubio, C. C. Hsu, C. Kane, C. Langreth, C. Langreth, C. M. Varma, C. Richardson, D. L. Adler, D. M. Goodstein, D. R. Andersson, D. V. Averin, E. C. Goldberg, E. R. Behringer, E. R. Behringer, G. A. Kimmel, G. A. Kimmel, H. Brenten, H. Brenten, H. Kasai, H. Nakanishi, H. Schall, H. Schall, J. B. Marston, J. Hermann, J. J. C. Geerlings, J. J. C. Geerlings, J. J. C. Geerlings, J. Los, K. L. Sebastian, K. W. Sulston, K. W. Sulston, M. J. Ashwin, M. L. Yu, N. Andrei, N. Andrei, N. Lorente, O. Gunnarsson, P. B. Wiegmann, P. Nordlander, P. Nordlander, P. Nordlander, P. Nordlander, P. O. Gartland, P. O. Gartland, R. Brako, R. Brako, R. Brako, R. L. McEachern, R. Zimny, R. Zimny, T. Dorsey, Tony Fónden, X. Nakanishi, X. Nakanishi, Y. Bu   +60 more
core   +2 more sources

Evolutionary radiation of large‐bodied gorgonopsians from the lower Abrahamskraal formation of South Africa

The Anatomical Record, EarlyView.
Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo, Ricardo Araújo, Bruce S. Rubidge, Michael O. Day, Kathleen N. Dollman, Julien Benoit   +5 more
wiley   +1 more source

Recent advances in boosting interfacial bubble dynamics with external fields

Droplet, EarlyView.
External physical fields, including acoustic, magnetic, thermal, mechanical, and optical stimuli, accelerate the entire bubble‐dynamics sequence of nucleation, growth, and detachment. Abstract The efficiency of industrial electrocatalytic reactions depends not only on generating gaseous products but also on their detachment from the catalyst surface ...
Wenlu Xie, Yanwei Zhang, Yi Liu, Yiming Wei, Jing‐Li Luo, Chenyu Xu   +5 more
wiley   +1 more source