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Topic Area: Advanced Materials
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Displaying records 51 to 60 of 77 records.
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51. Polymeric Gels Prepared from the Mixtures of Polar Polymers and Ionic Liquids for Thermally Remendable Coating Systems
Topic: Advanced Materials
Published: 11/7/2010
Authors: Joonsung (Joonsung) Yoon, Christopher M Stafford
Abstract: A new kind of physical gels was prepared using the mixtures of poly(vinyl alcohol) (PVOH) and high melting ionic liquid (IL), 1-ethylpyridinium bromide. As the IL content was increased, the stiffness of the mixtures decreased sharply while extensibil ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906696

52. Effect of 3D Scaffold Structure on Osteogenic Differentiation of Human Bone Marrow Stromal Cells
Topic: Advanced Materials
Published: 9/30/2010
Authors: Girish Kumar, Marian F Young, Carl George Simon Jr
Abstract: 3D structural properties of polymeric scaffolds for tissue engineering play a key role in directing osteogenesis. In addition, much work has demonstrated that cell differentiation is sensitive to topology at sizes ranging from nano- to micro- to mac ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906748

53. Surface Wrinkling: a Versatile Platform for Measuring Thin Film Properties
Topic: Advanced Materials
Published: 9/2/2010
Authors: Jun Y. Chung, Adam J. Nolte, Christopher M Stafford
Abstract: Surface instabilities in soft matter have captivated the scientific community for decades. Recently, surface wrinkling has received a great deal of attention due to its simplicity and well-established mechanics of formation. Particularly, the use o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902425

54. Manipulation of the elastic modulus of polymers at the nanoscale: Influence of UV-ozone crosslinking and plasticizer
Topic: Advanced Materials
Published: 8/16/2010
Authors: Jessica M. Torres, Christopher M Stafford, Bryan D. Vogt
Abstract: The mechanical stability of polymeric nanostructures is critical to the processing, assembly and performance of numerous existing and emerging technologies. A key predictor of mechanical stability is the elastic modulus. However, a significant reduc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904765

55. Impact of molecular mass on the elastic modulus of polystyrene thin films
Topic: Advanced Materials
Published: 7/31/2010
Authors: Jessica M. Torres, Christopher M Stafford, Bryan D. Vogt
Abstract: Euler wrinkling was used to determine the elastic modulus at ambient temperature of polystyrene (PS) films of varying thickness and relative molecular mass (Mn). A range of Mn from 1.2 kg/mol to 990 kg/mol was examined to determine if the molecular ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903960

56. Characterization of Tissue-Equivalent Materials for High-Frequency Applications (200 MHz to 20 GHz)
Series: Technical Note (NIST TN)
Report Number: 1554
Topic: Advanced Materials
Published: 7/1/2010
Authors: James R. Baker-Jarvis, Sung Kim, Luke Leschallinger, Justin Johnson, Brad Givot
Abstract: The purpose of this report is to summarize the characterization of a number of high-frequency solid, liquid, and semisolid tissue-equivalent materials, from 200 MHz to 20 GHz. Carbon black and liquid mixtures were studied, but were found to be uns ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905167

57. Combinatorial Screening of Hydrogels for 3-D Cell Culture: Osteoblasts in Stiffness Gradients Yield Graded Tissues
Topic: Advanced Materials
Published: 7/1/2010
Authors: Kaushik Chatterjee, Sheng Lin-Gibson, William E Wallace III, Marian F Young, Carl George Simon Jr
Abstract: A combinatorial library approach was used to demonstrate that hydrogel scaffold modulus can enhance osteoblast differentiation driving formation of a 3-D graded tissue construct. Though many previous studies have focused on screening cell-material i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902328

58. Multi-Scale Pore Morphology in Vapor-Deposited Yttria-Stabilized Zirconia Coatings
Topic: Advanced Materials
Published: 6/16/2010
Authors: Derek D. Hass, H. Zhao, Tabbetha A. Dobbins, Andrew John Allen, Andrew J Slifka, H. N.G. Wadley
Abstract: A high pressure, electron-beam directed-vapor deposition process has been used to deposit partially stabilized zirconia containing 7 % yttria by mass at deposition pressures of 7.5 Pa to 23 Pa. Anisotropic ultra-small-angle X-ray scattering (USAXS) w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903655

59. Challenges and Opportunities of Organic Electronics
Topic: Advanced Materials
Published: 4/2/2010
Author: Calvin Chan
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905387

60. Organic Electronics: Challenges and Opportunities
Topic: Advanced Materials
Published: 3/31/2010
Author: Calvin Chan
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905389



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