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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

Official URL: Volltext

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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
Refereed: Yes
Keywords: granular matter; self organized criticality; phase transitions; 1/f noise; nonequilibrium systems
Institutions of the University: Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics V
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics V > Chair Experimental Physics V - Univ.-Prof. Dr. Ingo Rehberg
Profile Fields > Advanced Fields > Nonlinear Dynamics
Profile Fields
Profile Fields > Advanced Fields
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 18 Feb 2017 22:00
Last Modified: 20 Jun 2018 10:14
URI: https://eref.uni-bayreuth.de/id/eprint/36143