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# 1/f noise on the brink of wet granular melting

## Title data

Huang, Kai:
1/f noise on the brink of wet granular melting.
In: New Journal of Physics. Vol. 17 (2015) Issue 8 . - 083055.
ISSN 1367-2630
DOI: https://doi.org/10.1088/1367-2630/17/8/083055

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## Project information

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## Abstract in another language

The collective behavior of a two-dimensional wet granular cluster under horizontal swirling motions is investigated experimentally. Depending on the balance between the energy injection and dissipation, the cluster evolves into various nonequilibrium stationary states with strong internal structure fluctuations with time. Quantitative characterizations of the fluctuations with the bond orientational order parameter ${q}_{6}$ reveal power spectra of the form ${f}^{\alpha }$ with the exponent α closely related to the stationary states of the system. In particular, $1/f$ type of noise with $\alpha \approx -1$ emerges as melting starts from the free surface of the cluster, suggesting the possibility of using $1/f$ noise as an indicator for phase transitions in systems driven far from thermodynamic equilibrium.

## Further data

Item Type: Article in a journal Yes granular matter; self organized criticality; phase transitions; 1/f noise; nonequilibrium systems FacultiesFaculties > Faculty of Mathematics, Physics und Computer ScienceFaculties > Faculty of Mathematics, Physics und Computer Science > Department of PhysicsFaculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics VFaculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics V > Chair Experimental Physics V - Univ.-Prof. Dr. Ingo RehbergProfile Fields > Advanced Fields > Nonlinear DynamicsProfile FieldsProfile Fields > Advanced Fields Yes 500 Science > 530 Physics 18 Feb 2017 22:00 20 Jun 2018 10:14 https://eref.uni-bayreuth.de/id/eprint/36143