U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 1476 - 1500 of 1923

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

Wetting-Dewetting Transition Line in Thin Polystyrene Films

September 9, 2005
Author(s)
H Raghavan, K M. Ashley, A Seghal, Jack F. Douglas, Alamgir Karim
We review recent advances in the application of combinatorial methods to polymer thin film characterization. Combinatorial methods allow the rapid exploration of multidimensional parameter spaces that naturally arise in the description of polymer film

Rheopexy of Synovial Fluid and Protein Aggregation

September 5, 2005
Author(s)
Katherine Oates, Wendy Krause, Ronald L. Jones, R H. Colby
Bovine synovial fluid and albumin solutions of similar concentration are rheopectic (stress increases with time in steady shear). This unusual flow characteristic is caused by protein aggrega- tion, and the total stress is enhanced by entanglement of this

Chemistry of Silanes Interfaces in Dental Polymers and Composites

September 1, 2005
Author(s)
Joseph M. Antonucci, Sabine H. Dickens, Bruce O. Fowler, Hockin D. Xu, Walter G. McDonough
The performance and service life of glassor ceramic-filled polymeric composites depend on the nature of their resin, filler and interfacial phases as well as the efficacy of the polymerization process. The synergy that exists between the organic polymer

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 /
Displaying 1476 - 1500 of 1923
Was this page helpful?