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Topic Area: Advanced Materials
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Displaying records 41 to 50 of 78 records.
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41. 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

42. Measuring Organelle Shape in 3D in Stem Cells Cultured on Nanofiber Scaffolds
Topic: Advanced Materials
Published: 4/19/2014
Authors: Carl George Simon Jr, Peter Bajcsy, Wojtek J Tutak, Jyotsnendu (Jyotsnendu) Giri
Abstract: Previous work has demonstrated that culture of osteoprogenitor cells on nanofiber scaffolds can potentiate osteogenic differentiation [1-4]. Culture of cells in nanofiber scaffolds causes changes to cell morphology, suggesting that morphological ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914995

43. Measuring Stem Cell Dimensionality in Tissue Scaffolds
Topic: Advanced Materials
Published: 4/1/2014
Authors: Carl George Simon Jr, Sapun Parekh, Christopher K. Tison, Girish Kumar, Tanya M. Farooque, Charles H Camp
Abstract: Many 3D scaffold systems have evolved for tissue engineering, drug screening and in vitro tissue models. However, it is not clear which scaffolds provide a 3D cell niche and there is no clear way to measure cell niche dimensionality. Advances in 3D ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913148

44. Measuring the viscoelastic properties of confined polymer films by thermal wrinkling
Topic: Advanced Materials
Published: 3/21/2010
Authors: Edwin P Chan, Kirt Anthony Page, Christopher M Stafford
Abstract: We demonstrate that thermal wrinkling can be utilized to measure the rubbery modulus and shear viscosity of polystyrene (PS) thin films as a function of temperature. Specifically, we use surface laser-light scattering (SLS) to characterize the wrinkl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904142

45. Mechanically Robust Spin-On Organosilicates Glasses for Nanoporous Applications
Topic: Advanced Materials
Published: 2/7/2007
Authors: Hyun W. Ro, K Char, Eun-Chae Jeon, H C Kim, Dongil Kwon, Hae-Jeong Lee, J. H. Lee, Hee-Woo Rhee, Christopher L Soles, Do Y. Yoon
Abstract: An increasing number of technologies demand nanoporous materials with vastly improved physical, mechanical and thermal properties. This manuscript develops the microstructural basis for synthesizing organosilicate glasses (OSGs) with unprecedented ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852621

46. Modulus-Driven Differentiation of Marrow Stromal Cells in 3D Is Independent of Cytoskeletal Integrity
Topic: Advanced Materials
Published: 4/11/2011
Authors: Carl George Simon Jr, Kaushik Chatterjee, Sapun Parekh, Sheng Lin-Gibson, Nicole M. Moore, Marcus T Cicerone, Marian F Young
Abstract: Cell functions such as proliferation, migration, and differentiation are key physiological processes that are influenced by the physiochemical extracellular environment. We report on the effect of three-dimensional (3D) scaffold modulus on human bon ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907017

47. Molecular Layer-by-Layer Deposition of Highly Crosslinked Polyamide Membranes for Reverse Osmosis Applications
Topic: Advanced Materials
Published: 11/19/2011
Authors: Peter M. Johnson, Joonsung (Joonsung) Yoon, Jennifer Y. Kelly, John A. (John A) Howarter, Christopher M Stafford
Abstract: In membranes for reverse osmosis and nanofiltration, the discriminating layers consist of an interfacially polymerized polyamide film on a porous support. For reverse osmosis membranes, the dominant commercial interfacial film is a crosslinked netwo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908946

48. Morphological Changes Driven by Nanofibrous Scaffolds Induce Marrow Stromal Cell Osteogenesis
Topic: Advanced Materials
Published: 10/11/2011
Authors: Carl George Simon Jr, Kaushik Chatterjee, Christopher K. Tison, Girish Kumar, Patrick S Pine, Marc L Salit, Jennifer H McDaniel, Marian F Young
Abstract: Cells are sensitive to tissue scaffold architecture and these cell-material interactions drive cell functions critical in tissue regeneration. Results presented here demonstrate that nanofiber scaffolds force primary human bone marrow stromal cells ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908027

49. 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

50. NIST Reference Material Scaffolds Characterized for Cell Response
Topic: Advanced Materials
Published: 4/24/2011
Authors: Carl George Simon Jr, Jeff M Coles
Abstract: Reference scaffolds characterized for cell response are being developed for use as a standard for biological characterization of new scaffolds. The need for reference scaffolds to serve as a calibration standard between labs has been identified as c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907327



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