Localized structures in dissipative media: from optics to plant ecology

M Tlidi, K Staliunas, K Panajotov… - … of the Royal …, 2014 - royalsocietypublishing.org
Localized structures (LSs) in dissipative media appear in various fields of natural science
such as biology, chemistry, plant ecology, optics and laser physics. The proposal for this …

The fluid dynamics of propagating fronts with solutal and thermal coupling

S Mukherjee, MR Paul - Journal of Fluid Mechanics, 2022 - cambridge.org
We numerically explore the propagation of reacting fronts in a shallow and horizontal layer
of fluid. We focus on fronts that couple with the fluid due to density differences between the …

Ring-laser gyroscope without the lock-in phenomenon

S Sunada, S Tamura, K Inagaki, T Harayama - Physical Review A—Atomic …, 2008 - APS
We theoretically and numerically study the effect of backscattering on rotating ring lasers by
employing the Maxwell-Bloch equations. We show that frequency shifts due to the Sagnac …

Invariant manifolds and the geometry of front propagation in fluid flows

KA Mitchell, JR Mahoney - Chaos: An Interdisciplinary Journal of …, 2012 - pubs.aip.org
Recent theoretical and experimental work has demonstrated the existence of one-sided,
invariant barriers to the propagation of reaction-diffusion fronts in quasi-two-dimensional …

Autocatalytic reaction fronts inside a porous medium of glass spheres

S Atis, S Saha, H Auradou, D Salin, L Talon - Physical review letters, 2013 - APS
We analyze experimentally chemical wave propagation in the disordered flow field of a
porous medium. The reaction fronts travel at a constant velocity that drastically depends on …

Barriers to front propagation in ordered and disordered vortex flows

D Bargteil, T Solomon - Chaos: An Interdisciplinary Journal of …, 2012 - pubs.aip.org
We present experiments on reactive front propagation in a two-dimensional (2D) vortex
chain flow (both time-independent and time-periodic) and a 2D spatially disordered (time …

Front dynamics and pinning-depinning phenomenon in spatially periodic media

F Haudin, RG Elías, RG Rojas, U Bortolozzo… - Physical Review E …, 2010 - APS
Front propagation in one-and two-dimensional spatially modulated media is studied both
experimentally and theoretically. The pinning-depinning phenomenon, long ago predicted …

Experimental studies of coherent structures in an advection-reaction-diffusion system

S Gowen, T Solomon - Chaos: An Interdisciplinary Journal of Nonlinear …, 2015 - pubs.aip.org
We present experimental studies of reaction front propagation in a single vortex flow with an
imposed external wind. The fronts are produced by the excitable, ferroin-catalyzed Belousov …

Frozen reaction fronts in steady flows: A burning-invariant-manifold perspective

JR Mahoney, J Li, C Boyer, T Solomon, KA Mitchell - Physical Review E, 2015 - APS
The dynamics of fronts, such as chemical reaction fronts, propagating in two-dimensional
fluid flows can be remarkably rich and varied. For time-invariant flows, the front dynamics …

Pinning of reaction fronts by burning invariant manifolds in extended flows

PW Megson, ML Najarian, KE Lilienthal… - Physics of …, 2015 - pubs.aip.org
We present experiments on the behavior of reaction fronts in extended, vortex-dominated
flows in the presence of an imposed wind. We use the ferroin-catalyzed, excitable Belousov …