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Displaying 1501 - 1525 of 1926

Surface-Grafted Block Copolymer Gradients: Effect of Block Length on Solvent Response

September 1, 2005
Author(s)
Chang Xu, Tao Wu, J Batteas, Charles M. Drain, Kathryn L. Beers, Michael J. Fasolka
We outline a method to fabricate gradient combinatorial libraries that explore architectural parameters in surface-grafted block copolymers (BCs). In addition, we demonstrate the utility of such libraries for the rapid, thorough assessment of the response

Microfluidic Platform for Combinatorial Measurements of Polymer Particles

August 28, 2005
Author(s)
Zuzanna T. Cygan, Susan E. Barnes, Kathryn L. Beers, Eric J. Amis
Organic-stable microfluidic devices are used for combinatorial measurements of polymerization reactions on chip. Formulation, processing, and measurement are combined on one chip device for the generation of combinatorial polymer libraries. A monomer /

Direct Correlation of Organic Semiconductor Film Structure to Field-Effect Mobility

August 1, 2005
Author(s)
Dean M. DeLongchamp, S Sambasivan, Daniel A. Fischer, Eric K. Lin, Paul C. Chang, A R. Murphy, J M. Frechet, V Subramanian
Recent efforts towards the large-scale adoption of organic electronics have focused on maximizing device performance using new molecular designs and processing strategies. However, rational design and systematic progress are hindered by insufficient

Gradient Chemical Micropatterns: A Reference Substrate for Surface Nanometrology

August 1, 2005
Author(s)
D Julthongpiput, Michael J. Fasolka, Wenhua Zhang, Tinh Nguyen, Eric J. Amis
We present fabrication routes for a new type of surface specimen that exhibits a micropattern with a gradient in chemical contrast between the pattern domains. Design elements in the specimen allow chemical contrast in the micropattern to be related to

Direct Measurement of the Counterion Distribution Within Swollen Polyelectrolyte Films

July 19, 2005
Author(s)
Vivek M. Prabhu, B D. Vogt, Wen-Li Wu, Eric K. Lin, Jack F. Douglas, Sushil K. Satija, D L. Goldfarb, H Ito
The depth profile of the counterion concentration within thin polyelectrolyte films was measured in situ using contrast variant specular neutron reflectivity to characterize the initial swelling stage of the film dissolution.Wefind substantial counterion

Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry Interlaboratory Comparison of Mixtures of Polystyrene With Different End Groups: Statistical Analysis of Mass Fractions and Mass Moments

July 1, 2005
Author(s)
Charles M. Guttman, S Wetzel, Kathleen M. Flynn, B M. Fanconi, David L. VanderHart, William E. Wallace
A matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) interlaboratory comparison was conducted on mixtures of synthetic polymers having the same repeat unit and closely matching molecular mass distributions but with

Combinatorial and High-Throughput Measurement of the Modulus of Thin Polymer Films

June 1, 2005
Author(s)
Christopher M. Stafford, Shu Guo, Martin Y. Chiang, C Harrison
Considerable attention has been devoted to developing fabrication strategies for constructing combinatorial material libraries as well as tools for characterizing the chemical and physical properties of such libraries. Less attention has been dedicated to

Direct Measurement of the Counterion Distribution Within Swollen Polyelectrolyte Films

May 20, 2005
Author(s)
Vivek M. Prabhu, B D. Vogt, Wen-Li Wu, Jack F. Douglas, Eric K. Lin, Sushil K. Satija, D M. Goldfarb, H Ito
A depth profile of the counterion concentration within thin polyelectrolyte films was measured in-situ using contrast variant specular neutron reflectivity to characterize the initial swelling stage of the film dissolution. We find a substantial counterion

Genetic Cellular Responses to Tyrosine-Derived Polycarbonate Blends

April 1, 2005
Author(s)
L A. Bailey, Matthew Becker, James A. Cooper, J Kohn, Eric J. Amis
The evaluation and identification of detrimental interactions between biological species and synthetic surfaces is a daunting challenge as the number of materials and control of physical variables increases. In this talk, the physical properties of

Combinatorial Approach to Study Enzyme/Surface Interactions

March 1, 2005
Author(s)
K Loos, S L. Kennedy, Naomi Eidelman, Y Tai, M Zharnikov, Eric J. Amis, A Ulman, R A. Gross
A fast combinatorial approach to access information on the immobilization behavior and kinetics of enzymes on a variation of surfaces is presented. As a test system, Candida Antarctica Lipase B (CAL-B) was immobilized on a self-assembled monolayer (SAM)
Displaying 1501 - 1525 of 1926
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