@article { ISI:000326049600005,
	title = {Ascertaining universal features of yielding of soft materials},
	journal = {Rheologica Acta},
	volume = {52},
	number = {10-12},
	year = {2013},
	month = {NOV},
	pages = {859-865},
	publisher = {SPRINGER},
	address = {233 SPRING ST, NEW YORK, NY 10013 USA},
	abstract = {<p>Many metastable complex fluids, when subjected to oscillatory shear flow of increasing strain amplitude at constant frequency, are known to show a characteristic nonlinear rheological response which consists of a monotonic decrease in the elastic modulus and a nonmonotonic change in the loss modulus. In particular, the loss modulus increases from its low strain value, crosses the elastic modulus, and then decreases with further increase in the strain amplitude. Miyazaki et al. (Europhys Lett 75:915-921, 2006) proposed a qualitative argument to explain the origin of the nonmonotonic nature of the loss modulus and suggested that in fact this response could be universal to all complex fluids if they are probed in a certain frequency window in which the fluid is dominantly elastic in the small strain limit. In this letter, we confirm their hypothesis by showing that a wide variety of complex fluids, irrespective of their thermodynamic state under quiescent conditions, indeed show the aforementioned characteristic nonlinear response. We also show that the maximum relative dissipation during yielding occurs when the imposed frequency resonates with the characteristic beta relaxation frequency of the fluid.</p>},
	keywords = {Colloidal suspensions, Entangled melts, Gels, Glasses, Microgels, Rheology, Yielding},
	issn = {0035-4511},
	doi = {10.1007/s00397-013-0724-4},
	author = {Kamble, Samruddhi and Pandey, Anurag and Rastogi, Sanjay and Lele, Ashish K.}
}
@article {46015,
	title = {Alternating electric-field-induced assembly of binary mixtures of soft repulsive ionic microgel colloids},
	journal = {Journal of Colloid and Interface Science	},
	volume = {544},
	year = {2019},
	month = {MAY},
	pages = {88-95},
	type = {Article},
	abstract = {<p>An external alternating electric field is used to study the assembly of a binary mixture of Poly(N-isopro pylacrylamide-co-acrylic acid) microgels in their swollen form at hydrodynamic size ratio 2:1 under deprotonated state. The AC field experiments were carried out at a fixed frequency of 100 kHz in the fluid regime for three number density ratios 1:3, 1:1 and 3:1 of big-to-small microgels using a confocal microscope. Strings with different types of co-assembly structures such as buckled, ring, flame and sandwich have been observed at low and intermediate field strengths at ratio 1:3, 1:1. In buckled and ring type, one or two small particles sit at the contact of two big particles and in the flame type, small particles arrange like a cone at end of the string. In the sandwich structure, several double small particle layers lie in between big particles. At high field strength, aggregation of strings and a phase separation into individual aggregates of strings from both big and small microgels have been observed. At higher ratio 3:1, the string formation is mostly dominated by big particles. Our experimental results are discussed with the recent simulation and experimental works on AC field induced structures in binary hard sphere mixtures. (C) 2019 Elsevier Inc. All rights reserved.</p>},
	keywords = {assembly, dipolar interactions, Microgels, Soft colloids},
	issn = {0021-9797},
	doi = {10.1016/j.jcis.2019.02.075},
	author = {Jathavedan, Kiran and Bhat, Suresh K. and Mohanty, Priti S.}
}
