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Search Publications by: Alamgir Karim (Assoc)

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Displaying 151 - 175 of 200

Combinatorial Study of Surface Pattern Formation in Thin Block Copolymer Films

July 1, 2001
Author(s)
A P. Smith, Jack F. Douglas, J C. Meredith, Eric J. Amis, Alamgir Karim
Surface pattern formation in thin diblock copolymer films is investigated utilizing a high-throughput methodology to validate the combinatorial measurement approach for polymer science. Measurement libraries of block copolymer films having gradients in

Suppression of Lateral Phase Separation in Thin Polyolefin Blend Films

March 1, 2001
Author(s)
Y A. Akpalu, Alamgir Karim, Sushil K. Satija, N P. Balsara
The effectiveness of a compatibilizer in suppressing lateral phase separation in thin polyolefin blend films is investigated as a function offilm thickness and temperature. Neutron and x-ray reflectivity measurements were made on spun cast thin blend films

Polymer-Clay Nanocomposite Materials: Solution and Bulk Properties

January 1, 2001
Author(s)
G Schmidt, A Nakatani, Paul Butler, V Ferreiro, Alamgir Karim, Charles C. Han
The influence of shear on viscoelastic polymer-clay solutions was investigated by means of small-angle neutron scattering (SANS) under shear. SANS measured the shear-induced orientation of polymer and platelets. With increasing shear rate an anisotropic

Combinatorial Materials Science for Polymer Thin-Film Dewetting

December 1, 2000
Author(s)
J C. Meredith, A P. Smith, Alamgir Karim, Eric J. Amis
A combinatorial technique is described for rapid measurement of phenomena associated with thin-film polymer science. Thin-film libraries of polystyrene on silicon, containing systematic variations in film thickness and temperature, are prepared with a