Natural systems are undeniably subject to random fluctuations, arising from either
environmental variability or thermal effects. The consideration of those fluctuations supposes …

We review experimental and theoretical studies on the design and control of spatiotemporal
behavior in chemical systems. A wide range of approaches have been pursued to control …

The human eye is bored by monotonous landscapes. We are depressed by gray skies,
unending plains under the wing of an airliner, featureless urban sprawl, geometric …

The beating of the heart is a synchronized contraction of muscle cells (myocytes) that is
triggered by a periodic sequence of electrical waves (action potentials) originating in the …

A scroll wave in a sufficiently thin layer of an excitable medium with negative filament
tension can be stable nevertheless due to filament rigidity. Above a certain critical thickness …

Two kinds of scroll wave instabilities were studied experimentally in the excitable Belousov-
Zhabotinsky reaction: three-dimensional meandering and negative line tension of the scroll …

One of the fundamental mechanisms for the onset of turbulence in 3D excitable media is
negative filament tension. Thus far, negative tension has always been obtained in media …

Scroll waves are vortices that occur in three-dimensional excitable media. Scroll waves have
been observed in a variety of systems including cardiac tissue, where they are associated …

Scroll waves are vortices that occur in three-dimensional excitable media. Scroll waves have
been observed in a variety of systems including cardiac tissue, where they are associated …

Filament-induced surface defect-mediated turbulence in bounded three-dimensional (3D)
excitable media is investigated in the regime of negative line tension. In this regime …