01952nas a2200241   4500008004100000022001400041245011200055210006900167260009500236300001400331490000600345520104000351653001301391653003201404653002101436653001901457100002001476700002301496700001801519700001901537700003001556856012401586       2006                        eng d  a1533-488000aAssembly of phase transferred nickel nanoparticles at air-water interface using Langmuir-Blodgett technique0 aAssembly of phase transferred nickel nanoparticles at airwater i  a25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USAbAMER SCIENTIFIC PUBLISHERScDEC  a3736-37450 v63 a<p>Development of simple and efficient protocol for the synthesis of Ni nanoparticles in aqueous media and their subsequent phase transfer to organic media is reported. The synthesis of nickel nanoparticles in aqueous medium is accomplished by reducing the nickel nitrate with sodium borohydricle in presence of oleic acid. It results in the formation of nickel nanoparticles capped with oleic acid. The pristine oleic acid capped nickel nanoparticles were then phase transferred to nonpolar solvents such as toluene using stearic acid. The phase transfer was effective probably due to the space exchange between the oleic acid moiety and stearic acid molecules. The hydrophobized Ni thus obtained was organized at the air-water interface and it was observed that by controlling the pressure and concentration of hydrophobized Ni nanoparticles at air-water interface, linear ribbon like assemblies could be obtained. The organization process was followed by surface pressure-area isotherm measurement and Brewster Angle Microscopy.</p>10aassembly10aLangmuir-Blodgett technique10aNi nanoparticles10aPhase transfer1 aBala, Tanushree1 aJoshi, Bhagyashree1 aIyer, Neelima1 aSastry, Murali1 aPrasad, Bhagavatula L. V.  uhttps://library.ncl.res.in/content/assembly-phase-transferred-nickel-nanoparticles-air-water-interface-using-langmuir-002058nas a2200217   4500008004100000022001400041245010900055210006900164260000800233300001000241490000800251520131600259653001301575653002501588653001401613653001801627100002201645700002101667700002301688856012901711       2019                        eng d  a0021-979700aAlternating electric-field-induced assembly of binary mixtures of soft repulsive ionic microgel colloids0 aAlternating electricfieldinduced assembly of binary mixtures of   cMAY  a88-950 v5443 a<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>10aassembly10adipolar interactions10aMicrogels10aSoft colloids1 aJathavedan, Kiran1 aBhat, Suresh, K.1 aMohanty, Priti, S.  uhttps://library.ncl.res.in/content/alternating-electric-field-induced-assembly-binary-mixtures-soft-repulsive-ionic-microgel