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Displaying 1401 - 1425 of 1856

Dissolution Fundamentals of 193-nm Methacrylate Based Photoresists

February 19, 2006
Author(s)
Ashwin Rao, Shuhui Kang, B D. Vogt, Vivek Prabhu, Eric K. Lin, Wen-Li Wu, Karen Turnquest, W D. Hinsberg
The dissolution of partially deprotected chemically amplified photoresists is the final step in printing lithographic features. Since this process step can be tuned independently from the design of the photoresist chemistry, fundamental measurements of the

Generating Thickness Gradients of Thin Polymer Films via Flow Coating

February 1, 2006
Author(s)
Christopher Stafford, Kristen Roskov, Thomas Epps, Michael J. Fasolka
Thickness is a governing factor in the behavior of films and coatings. To enable the high-throughputanalysis of this parameter in polymer systems, we detail the design and operation of a flow coater device for fabricating continuous libraries of polymer

Mirofluidic Appproach for Rapid Interfacial Tensiometry

February 1, 2006
Author(s)
J Cabral, Steven Hudson
We report a microfluidic instrument to rapidly measure the interfacial tension of multi-component immiscible liquids. The measurement principle rests upon the deformation and retraction dynamics of drops under extensional flow and was implemented in

Effect of Shear Flow on Multi-Component Polymer Mixtures

January 1, 2006
Author(s)
Charles C. Han, Yonghua Yao, C.L. Zhang, Erik K. Hobbie
There is considerable interest in the phase behavior of multi-component polymer mixtures, the so-called polymer blends, due to their broad technological importance in the plastics industry. Traditionally, quiescent conditions have been adopted for

High Throughput Measurement of Peel of a Pressure Sensitive Adhesive

January 1, 2006
Author(s)
P M. McGuiggan, James J. Filliben
The peel force of a pressure sensitive adhesive (PSA) tape is measured on a surface that varied linearly in temperature. As the tape is peeled from the surface, the adhesive is peeled from a surface at a different temperature. The temperature can be

Small Angle Neutron Scattering from Labeled Single Wall Carbon Nanotubes

January 1, 2006
Author(s)
Barry J. Bauer, Erik K. Hobbie, Matthew Becker
Small angle neutron scattering (SANS) is used with the high concentration method to extract single particle scattering from single wall carbon nanotubes (SWNTs). The SWNT material was labeled by covalently attaching -C4H9 or -C4D9 groups by use of free

The influence of molecular weight on the microstructure and thin film transistor characteristics of pBTTT polymers

January 1, 2006
Author(s)
Rick Hamilton, Clare Bailey, Warren Duffy, Martin Heeney, Martin Shkunov, David Sparrowe, Steve Tierney, Iain McCulloch, Regis J. Kline, Dean DeLongchamp, Michael L. Chabinyc
A common strategy to improve the electrical performance of organic field effect transistors is to optimize the charge carrier mobility of the semiconducting thin film. Polymer semiconductor transport properties have shown a dependence on the chain length

Multiscale Modeling of Germanium Quantum Dots in Silicon

December 30, 2005
Author(s)
Vinod Tewary, David T. Read
A method is described for multiscale modeling of a quantum dot in a semiconductor containing a free surface. The method is based upon the use of the lattice-statics and continuum Green's functions integrated with classical molecular dynamics. It fully

Self-Assembly, Molecular Ordering, and Charge Mobility in Solution-Processed Ultrathin Oligothiophene Films

November 29, 2005
Author(s)
A R. Murphy, Paul C. Chang, Priscilla VanDyke, J Liu, J M. Frechet, V Subramanian, Dean DeLongchamp, S Sambasivan, Daniel A. Fischer, Eric K. Lin
Symmetrical quarter-(T4), penta-(T5), sexi-(T6), and heptathiophene (T7) oligomers containing thermally removable aliphatic ester solubilizing groups were synthesized, and their UV-vis and thermal characteristics were compared. Spun-cast thin films of each

Variations in Semiconducting Polymer Microstructure and Hole Mobility With Spin-Coating Speed

November 15, 2005
Author(s)
Dean M. DeLongchamp, Brandon M. Vogel, Youngsuk Jung, Curt A. Richter, Oleg A. Kirillov, Jan Obrzut, Daniel A. Fischer, S Sambasivan, Marc Gurau, Lee J. Richter, Eric K. Lin
Organic semiconductors permit low-cost processing methods such as spin-coating, dip coating, or ink-jet printing onto flexible substrates. However, the performance of these materials in devices is difficult to control and new processing methods can deliver

Acoustic Modes and Elastic Properties of Polymeric Nanostructures

October 21, 2005
Author(s)
R Hartschuh, A Kisliuk, V N. Novikov, Alexei Sokolov, Paul R. Heyliger, Colm Flannery, Ward L. Johnson, Christopher Soles, Wen-Li Wu
Fabricating mechanically robust polymer structures with nanoscale dimensions is critical for a wide range of emerging technologies. The rigidity of such structures is expected to change as the feature sizes approach the characteristic dimensions of the

Fragility of Glass-Forming Polymer Liquids

October 4, 2005
Author(s)
J Dudowicz, Karl Freed, Jack F. Douglas
Many fluids exhibiting complex molecular structure or interactions solidify by glass-formation rather than crystallization. This tendency is especially prevalent in polymeric and biological systems where glass-formation is normal rather than exceptional

Combinatorial Materials Synthesis and High-Throughput Characterization

October 1, 2005
Author(s)
Ichiro Takeuchi, Lauterbach Jochen, Michael J. Fasolka
The pace at which major technological changes take place is often dictated by the rate at which new materials are discovered, and timely arrival of new materials has always played a key role in bringing advances to our society. There is no wonder then that
Displaying 1401 - 1425 of 1856