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Displaying 1751 - 1775 of 1944

DNA Hydrogel Plugs Immobilized in Microfluidic Channels with Improved Stability

February 28, 2002
Author(s)
Rebecca A. Zangmeister, K G. Olsen, David J. Ross, Michael J. Tarlov
It has been previously demonstrated that DNA, modified on the 5' end with an acrylic acid group, can be incorporated into a polyacrylamide hydrogel matrix. These types of DNA containing gels have recently been immobilized in plastic microfluidic channels

Combinatorial Assay of Cells on Topographically Patterned Surfaces

February 1, 2002
Author(s)
S L. Kennedy, N Washburn, A Sehgal, Alamgir Karim, Eric J. Amis
It has been well established that cell substrate topography can affect cell morphology and cell behavior. Numerous groups have demonstrated that cell alignment, anisotropic cell spreading and cell proliferation can be controlled by various topographical

Data Analysis Methods for Synthetic Polymer Mass Spectrometry: Autocorrelation

February 1, 2002
Author(s)
William E. Wallace, Charles M. Guttman
Autocorrelation is shown to be useful in describing the periodic patterns found in high-resolution mass spectra of synthetic polymers. Examples of this usefulness are described for a simple linear homopolymer to demonstrate the method fundamentals, a

Combinatorial Mapping of Polymer Film Wettability on Gradient Energy Surfaces

January 1, 2002
Author(s)
K M. Ashley, A Sehgal, Eric J. Amis, D T. Raghavan, Alamgir Karim
The use of combinatorial methods for studying dewetting of thin hydrophobic polystyrene (PS) and hydrophilic poly d-lacticacid (PDLA) films on chemically modified gradient energy surfaces was studied. Substrate libraries were prepared by immersing Si-H

Near-Field Optical Imaging of Microphase Separated and Semi-Crystalline Polymer Systems

January 1, 2002
Author(s)
Michael J. Fasolka, Lori S. Goldner, A Urbas, Jeeseong C. Hwang, Kathryn Beers, P DeRege, Evan L. Thomas
Polymer self-assembly presents an attractive means of creating the micro- and nano-patterned spatial arrays required for many opto-electronic and coatings technologies. Two of these ordering processes are microphase separation (MS), exhibited by block

Tri-Alpha-Napthyl Benzene as a Crystalline or Glassy Matrix for Matrix-Assisted Laser Desorption/Ionization: A Model System for the Study of Effects of Dispersion of Polymer Samples at a Molecular Level

January 1, 2002
Author(s)
Barry J. Bauer, Kathleen M. Flynn, Da-Wei Liu, William R. Blair
Tri-a-napthyl benzene (TaNB) is used as a matrix in matrix-assisted laser desorption/ionization (MALDI) spectroscopy. Electrosprayed TaNB is crystalline and has a melting point of 180 2 C. After heating above the melting point, TaNB becomes amorphous with
Displaying 1751 - 1775 of 1944
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