Phys. Rev. E 65, 031306 (2002) [4 pages]Granular polymer solutionReceived 14 March 2001; published 27 February 2002 We have measured the spectrum of fluctuations in the size of a granular polymer in a granular solvent. The system consists of a linear chain of plastic spheres immersed in a planar fluid of self-propelled balls. The time average of the end-to-end length r of the chain scales with the number of links N according to 〈r2〉∼N2ν, with ν=0.75±0.01. This provides an experimental test of the theoretical value ν=3/4 of the critical exponent for a self-avoiding random walk in two dimensions. The measured probability distribution P(r) is compared with the universal function of the scaling theory. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.65.031306
DOI:
10.1103/PhysRevE.65.031306
PACS:
45.70.-n, 36.20.-r, 05.40.-a, 89.75.-k
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