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Topic Area: Advanced Materials

Displaying records 41 to 50 of 69 records.
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41. Combinatorial Screening of Osteoblast Response to 3D Calcium Phosphate/Poly(e-caprolactone) Scaffolds Using Gradients and Arrays
Topic: Advanced Materials
Published: 12/31/2010
Authors: Carl George Simon Jr, Kaushik Chatterjee, Laurence Chung Lung Chow, Limin Sun, Marian F Young
Abstract: There is a need to improve rapid methods for screening cell-biomaterial interactions. Current methods employ a flat 2D format even though 3D scaffolds are more representative of the tissue environment in vivo and cells are responsive to topological ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906746

42. Effect of Polymeric Scaffold Structure on Osteogenic Differentiation of Human Bone Marrow Stromal Cells
Topic: Advanced Materials
Published: 12/17/2010
Authors: Girish Kumar, Marian F Young, Carl George Simon Jr
Abstract: Structural properties of polymeric scaffolds for bone tissue engineering play key role in directing osteogenesis. These properties depend on the chemical nature and the fabrication process of biomaterial. There are many protocols for fabricating sc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906518

43. 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

44. 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

45. 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

46. 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

47. 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

48. 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

49. 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

50. 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



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