Results 111 to 120 of about 3,004,284 (392)

The Strange Star Surface: A Crust with Nuggets

, 2005
We reexamine the surface composition of strange stars. Strange quark stars are hypothetical compact stars which could exist if strange quark matter was absolutely stable. It is widely accepted that they are characterized by an enormous density gradient ($
Andrew W. Steiner, D. N. Voskresensky, J. Madsen, O. G. Benvenuto, P. Haensel, Prashanth Jaikumar, Sanjay Reddy   +6 more
core   +1 more source

Searching for Strange Quark Matter Objects in Exoplanets [PDF]

, 2017
The true ground state of hadronic matter may be strange quark matter (SQM). Consequently, observed pulsars may actually be strange quark stars, but not neutron stars.
Y. F. Huang, Y. B. Yu
semanticscholar   +1 more source

Improved Mechanical Performance of Epoxy Systems with Low Loadings of Milled Carbon Fiber via Chemical Surface Modification

Advanced Engineering Materials, EarlyView.
The authors explore thermally initiated diazonium chemical surface modification as a means of improving the mechanical performance of milled carbon fibers in epoxy matrix systems at varying loadings by weight. They report significant improvements at <1% w/w loading through examination of flexural and tensile strength and modulus.
Ben Newman, Filip Stojcevski, Karyn L. Jarvis, Piers Coia, Luke C. Henderson   +4 more
wiley   +1 more source

Optical properties of gold nanoclusters constructed from Au13 units

Aggregate, Volume 3, Issue 6, December 2022., 2022
This review summarizes various optical properties of gold nanoclusters that consist of Au13 motifs. The structural evolution from Au13 to Au25, Au37, and Au60 is illustrated with increasing number of the Au13 building blocks. The review on the photo‐physics of Au13 family provides a comprehensive understanding of Au13‐assembled nanoclusters, which is ...
Jie Kong, Wei Zhang, Yanzhen Wu, Meng Zhou   +3 more
wiley   +1 more source

Structure of Strange Dwarfs with Color Superconducting Core

, 2007
We study effects of two-flavor color superconductivity on the structure of strange dwarfs, which are stellar objects with similar masses and radii with ordinary white dwarfs but stabilized by the strange quark matter core.
Alcock C, Alford M, Baym G, Benvenuto O G, Etsuchika Kobayashi, Glendenning N K, Glendenning N K, Glendenning N K, Higashijima K, Masayuki Matsuzaki, Mathews G J, Matsuzaki M, Witten E   +12 more
core   +1 more source

Is SAX J1808.4-3658 a Strange Star ? [PDF]

, 1999
One of the most important questions in the study of compact objects is the nature of pulsars, including whether they are composed of $\beta$-stable nuclear matter or strange quark matter. Observations of the newly discovered millisecond X-ray pulsar \sax
A. Olinto, A. R. Bodmer, B. Datta, C. Alcock, C. Alcock, D. B. Kaplan, D. B. Kaplan, D. Bhattacharya, D. Chakrabarty, D. Psaltis, E. Farhi, E. P. J. van den Heuvel, E. Witten, I. Bombaci, I. Bombaci, J. Arons, J. J. Aly, J. J. M. in't Zand, J. Miralda-Escudé, J. Schaffner, Jishnu Dey, K. S. Cheng, K. S. Cheng, L. Burderi, M. Baldo, M. Colpi, M. Dey, M. Gilfanov, M. Prakash, Mira Dey, N. A. Gentile, N. K. Glendenning, N. K. Glendenning, P. A. Sturrock, P. Haensel, P. Haensel, R. B. Wiringa, R. V. E. Lovelace, R. Wijnands, S. L. Shapiro, T. Maruyama, T. Muto, T. Tatsumi, V. R. Pandharipande, V. Thorsson, W. A. Heindl, W. Cui, W. H. G. Lewin, X.-D. Li, X.-D. Li, X.-D. Li   +50 more
core   +3 more sources

High‐Entropy Ti, Zr, Hf, Ta Multiphase Diboride with Deformation Resistance up to 2000 °C

Advanced Engineering Materials, EarlyView.
Ceramics are brittle and strength decreases with temperature. The multiphase high‐entropy (Ti0.25Ta0.25Hf0.25Zr0.25)B2 with heterogeneity at the nano‐ and microscale demonstrates deformation resistance up to 2000 °C, with maximum bending strength at 1800 °C.
Petre Badica, Mihai Alexandru Grigoroscuta, Andrei Cristian Kuncser, Oleg Vasylkiv   +3 more
wiley   +1 more source

Material Composition Gradient Controls the Autonomous Opening of Banksia Seed Pods in Fire‐Prone Habitats

Advanced Functional Materials, EarlyView.
The seed pod valves of Australian Banksia attenuata plants are not simply bi‐layers which bend when dry. These experiments and models reveal complex mechanics, which allow seed release only after several steps of seed pod opening. Stiffness gradients prevent delamination of the valves during loading, and a shape‐memory function protects the seeds ...
Friedrich Reppe, Lorenzo Guiducci, Rivka Elbaum, Peter Werner, John W. C. Dunlop, David J. Merritt, Peter Fratzl, Michaela Eder   +7 more
wiley   +1 more source

Radial Oscillations of Quark Stars Admixed with Dark Matter

Universe, 2022
We investigated compact stars consisting of cold quark matter and fermionic dark matter treated as two admixed fluids. We computed the stellar structures and fundamental radial oscillation frequencies of different masses of the dark fermion in the cases ...
José C. Jiménez, Eduardo S. Fraga
doaj   +1 more source

Strange matter in the string-flip model [PDF]

, 1999
We employ variational Monte Carlo methods to study the transition to strange matter in a simple one-dimensional string-flip model with two flavors and two colors of quarks.
A. B. Migdal, C. J. Horowitz, C. J. Horowitz, C. J. Horowitz, C. J. Horowitz, Danielle Morel, E. Farhi, E. Farhi, E. Witten, F. Lenz, G. M. Frichter, J. Piekarewicz, J. Piekarewicz, J. Schaffner, J. W. Negele, N. Isgur, N. Isgur, N. K. Glendenning, O. W. Greenberg, P. J. S. Watson, T. A. Armstrong   +20 more
core   +3 more sources