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Showing 1 to 12 of 25 entries
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Orientation mapping by transmission-SEM with an on-axis detector.

Ultramicroscopy

Fundenberger JJ, Bouzy E, Goran D, Guyon J, Yuan H, Morawiec A.
PMID: 26624512
Ultramicroscopy. 2016 Feb;161:17-22. doi: 10.1016/j.ultramic.2015.11.002. Epub 2015 Nov 10.

Conventional orientation mapping in a scanning electron microscope (SEM) is a valuable technique for characterizing crystalline materials, but its application to ultrafine or nano-grain materials is limited by its spatial resolution. The resolution can be increased by collecting transmission...

Aperiodic stochastic resonance in chaotic maps.

Chaos (Woodbury, N.Y.)

Krawiecki A, Sukiennicki A.
PMID: 12779782
Chaos. 1998 Dec;8(4):768-774. doi: 10.1063/1.166362.

It is shown by means of numerical simulations that aperiodic stochastic resonance occurs in chaotic one-dimensional maps with various kinds of intermittency. The effect appears in the absence of external noise, as the system control parameter is varied. In...

Pair approximation for the q-voter model with independence on multiplex networks.

Physical review. E

Gradowski T, Krawiecki A.
PMID: 32942358
Phys Rev E. 2020 Aug;102(2):022314. doi: 10.1103/PhysRevE.102.022314.

The q-voter model with independence is investigated on multiplex networks with full overlap of nodes in the layers. The layers are various complex networks corresponding to different levels of social influence. Detailed studies are performed for the model on...

Noisefree stochastic multiresonance near chaotic crises.

Physical review. E, Statistical, nonlinear, and soft matter physics

Krawiecki A, Matyjaśkiewicz S, Kacperski K, Hołyst JA.
PMID: 11690007
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Oct;64(4):041104. doi: 10.1103/PhysRevE.64.041104. Epub 2001 Sep 21.

We report on the phenomenon of noisefree stochastic multiresonance that appears in a natural way in systems where the threshold crossing probability has a nonmonotonous derivative with respect to the control parameter. In particular, we consider periodically driven chaotic...

Mapping the mesoscale interface structure in polycrystalline materials.

Ultramicroscopy

Wu CT, Adams BL, Bauer CL, Casasent D, Morawiec A, Ozdemir S, Talukder A.
PMID: 12425588
Ultramicroscopy. 2002 Nov;93(2):99-109. doi: 10.1016/s0304-3991(02)00151-1.

A new experimental approach to the quantitative characterization of polycrystalline microstructure by scanning electron microscopy is described. Combining automated electron backscattering diffraction with conventional scanning contrast imaging and with calibrated serial sectioning, the new method (mesoscale interface mapping system)...

Polycrystal orientation maps from TEM.

Ultramicroscopy

Fundenberger JJ, Morawiec A, Bouzy E, Lecomte JS.
PMID: 12672563
Ultramicroscopy. 2003 Aug;96(2):127-37. doi: 10.1016/S0304-3991(02)00435-7.

Determination of topography of crystallite orientations is an important technique of investigation of polycrystalline materials. A system for creating orientation maps using transmission electron microscope (TEM) Kikuchi patterns and Convergent beam electron diffraction patterns is presented. The orientation maps...

Volatility clustering and scaling for financial time series due to attractor bubbling.

Physical review letters

Krawiecki A, Hołyst JA, Helbing D.
PMID: 12366029
Phys Rev Lett. 2002 Oct 07;89(15):158701. doi: 10.1103/PhysRevLett.89.158701. Epub 2002 Sep 18.

A microscopic model of financial markets is considered, consisting of many interacting agents (spins) with global coupling and discrete-time heat bath dynamics, similar to random Ising systems. The interactions between agents change randomly in time. In the thermodynamic limit,...

Orientation precision of TEM-based orientation mapping techniques.

Ultramicroscopy

Morawiec A, Bouzy E, Paul H, Fundenberger JJ.
PMID: 24056282
Ultramicroscopy. 2014 Jan;136:107-18. doi: 10.1016/j.ultramic.2013.08.008. Epub 2013 Aug 30.

Automatic orientation mapping is an important addition to standard capabilities of conventional transmission electron microscopy (TEM) as it facilitates investigation of crystalline materials. A number of different such mapping systems have been implemented. One of their crucial characteristics is...

Shear banding phenomenon in a Cu-8 at.% Al alloy analysed by orientation imaging microscopy.

Journal of microscopy

Paul H, Morawiec A, Darrieulat M, Bouzy E.
PMID: 20500387
J Microsc. 2010 Mar;237(3):314-9. doi: 10.1111/j.1365-2818.2009.03250.x.

The microstructure and texture of Cu-8 at.% Al alloy single crystal with (112)[11 1] orientation plane strain compressed at 77 K were characterized by scanning electron microscope and transmission electron microscope orientation mappings in order to investigate the influence...

Minimal exactly solved model with the extreme Thouless effect.

Physical review. E

Fronczak A, Fronczak P, Krawiecki A.
PMID: 26871041
Phys Rev E. 2016 Jan;93(1):012124. doi: 10.1103/PhysRevE.93.012124. Epub 2016 Jan 14.

We present and analyze a minimal exactly solved model that exhibits a mixed-order phase transition known in the literature as the Thouless effect. Such hybrid transitions do not fit into the modest classification of thermodynamic transitions and, as such,...

Stochastic resonance and noise-enhanced order with spatiotemporal periodic signal.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics

Krawiecki A, Sukiennicki A, Kosinski RA.
PMID: 11138039
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 2000 Dec;62(6):7683-9. doi: 10.1103/physreve.62.7683.

Stochastic resonance is investigated in a chain of coupled threshold elements driven by independent noises and a plane traveling wave. Both stochastic resonance in an individual element embedded in the chain, characterized by a maximum of the signal-to-noise ratio...

On representing rotations by Rodrigues parameters in non-orthonormal reference systems.

Acta crystallographica. Section A, Foundations and advances

Morawiec A.
PMID: 27580203
Acta Crystallogr A Found Adv. 2016 Sep 01;72:548-56. doi: 10.1107/S2053273316009426. Epub 2016 Jul 28.

A Rodrigues vector is a triplet of real numbers used for parameterizing rotations or orientations in three-dimensional space. Because of its properties (e.g. simplicity of fundamental regions for misorientations) this parameterization is frequently applied in analysis of orientation maps...

Showing 1 to 12 of 25 entries