Results 91 to 100 of about 387,948 (293)

Quasi-Static Fractures in Disordered Media and Iterated Conformal Maps

, 2001
We study the geometrical characteristic of quasi-static fractures in disordered media, using iterated conformal maps to determine the evolution of the fracture pattern. This method allows an efficient and accurate solution of the Lam\'e equations without
Anders Levermann, B. Davidovitch, B. Davidovitch, B. Davidovitch, E. Bouchaud, E. Louis, Felipe Barra, H. George E. Hentschel, Itamar Procaccia, J. Fineberg, L. Slepian, M. Barber, M. Marder, M.B. Hastings, S. Ramanathan, Z. Olami   +15 more
core   +1 more source

Magnetic Force Microscopy Signatures of Higher‐Order Skyrmions and Antiskyrmions

Advanced Functional Materials, EarlyView.
Magnetic force microscopy operated under vacuum conditions enables the qualitative identification of higher‐order skyrmions and antiskyrmions in Co/Ni multilayers at room temperature. Distinct stray‐field contrast signatures arise from vertical Bloch lines and complex domain‐wall configurations.
Sabri Koraltan, Joe Sunny, Tamer Karaman, Reshma Peremadathil‐Pradeep, Emily Darwin, Felix Büttner, Dieter Suess, Hans Josef Hug, Manfred Albrecht   +8 more
wiley   +1 more source

A new approach to cosmological perturbations in f(R) models

, 2012
We propose an analytic procedure that allows to determine quantitatively the deviation in the behavior of cosmological perturbations between a given f(R) modified gravity model and a LCDM reference model. Our method allows to study structure formation in
, A. De Felice, A. Hojjati, A. Raccanelli ., A.G. Riess ., D. Larson ., D.J. Eisenstein, Daniele Bertacca, E. Bertschinger, E. Bertschinger, F. Bernardeau, H. Motohashi, J. Yoo, J. Zuntz, J.C. Bueno Sanchez, K.N. Ananda, L. Amendola, M. Abdelwahab, N. Bartolo, N. Bartolo, N. Bartolo, N. Bartolo, N. Lanahan-Tremblay, Nicola Bartolo, O. Lahav, R. Amanullah ., R. Maartens, S. Baghram, S. Capozziello, S. Capozziello, S. Carloni, S. Matarrese, S. Nojiri, S. Tsujikawa, Sabino Matarrese, SDSS collaboration, Supernova Cosmology Project collaboration, Supernova Search Team collaboration, T. Baldauf, T. Tatekawa, V. Faraoni, V. Paschalidis, WMAP collaboration   +42 more
core   +1 more source

Quasi‐Static to Supersonic Energy Absorption of Nanoarchitected Tubulanes and Schwarzites

Advanced Functional Materials, EarlyView.
Nanoarchitected energy‐absorptive Tubulanes exhibit record energy absorption under quasi‐static conditions and exceptional inelastic energy dissipation under 750 m s−1 ballistics impact, with high performance spanning strain rates of 12 orders of magnitude.
Peter Serles, Alianna Maguire, Thomas Butruille, Jet Lem, Shuo Yang, Pedro Guerra Demingos, Sahar Choukir, Michel Haché, Boran Kumral, Katherine Jia, Charles Jia, Yu Zou, Chandra Veer Singh, Carlos M. Portela, Jun Lou, Pulickel M. Ajayan, Tobin Filleter   +16 more
wiley   +1 more source

Multi-Channel Signals in Dynamic Force-Clamp Mode of Microcantilever Sensors for Detecting Cellular Peripheral Brush

Sensors
The development of numerous diseases, such as renal cyst, cancer, and viral infection, is closely associated with the pathological changes and defects in the cellular peripheral brush.
Qiang Lyu, Fan Pei, Ying-Long Zhao, Jia-Wei Ling, Neng-Hui Zhang   +4 more
doaj   +1 more source

Magnetostriction quasi-static measurements with laser Doppler effect

工程科学学报, 2016
A quasi-static method for measuring the magnetostrictive coefficient of Fe-Ga alloys by using laser Doppler effect was put forward, and its working principle was also analyzed. The quasi-static magnetostrictive coefficient of Galfenol was measured.
LI Ying-ming, MO Xi-ping, PAN Yao-zong, LIU Yong-ping, ZHANG Yun-qiang   +4 more
doaj   +1 more source

Modify-and-Forward for Securing Cooperative Relay Communications

, 2014
We proposed a new physical layer technique that can enhance the security of cooperative relay communications. The proposed approach modifies the decoded message at the relay according to the unique channel state between the relay and the destination such
Kim, Sang Wu
core   +1 more source

A New Threshold Switching Device With Tunable Negative Differential Resistance Based on ErMnO3 Polymorphs

Advanced Functional Materials, EarlyView.
Polymorph engineering in ErMnO3 enables low‐voltage, forming‐free threshold switching with tunable negative differential resistance. Conducting orthorhombic regions embedded in an insulating hexagonal matrix provide controlled Joule‐heating‐enhanced Poole–Frenkel transport. The hexagonal phase prevents excessive heating and breakdown.
Rong Wu, Florian Maudet, Thanh Luan Phan, Wassim Hamouda, Richard Schroedter, Ahmet Samil Demirkol, Ronald Tetzlaff, Veeresh Deshpande, Catherine Dubourdieu   +8 more
wiley   +1 more source

Finite-rate water condensation in combustion-heated wind tunnels [PDF]

A quasi-one-dimensional method for computing finite rate nucleation and droplet growth of water in a supersonic expansion of combustion products is presented. Sample computations are included for the Langley 8 foot High Temperature Tunnel, but the method
Erickson, Wayne D., Mall, Gerald H., Prabhu, Ramadas K.   +2 more
core   +1 more source

Design of Integral Controllers for Nonlinear Systems Governed by Scalar Hyperbolic Partial Differential Equations

, 2017
The paper deals with the control and regulation by integral controllers forthe nonlinear systems governed by scalar quasi-linear hyperbolic partial differentialequations.
Andrieu, Vincent, Trinh, Ngoc-Tu, Xu, Cheng-Zhong   +2 more
core   +3 more sources