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Displaying records 31 to 40 of 71 records.
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31. Gradient Nanofiber Scaffold Libraries for Screening Cell Response to Poly(e-caprolactone)-Calcium Phosphate Composites
Topic: Advanced Materials
Published: 3/1/2013
Authors: Carl George Simon Jr., Limin Sun, Laurence Chung Lung Chow, William Miles, Christopher K. Tison, Kaushik Chatterjee, Marian F Young, Vinoy Thomas, Murugan Ramalingam
Abstract: A 2-spinnerette approach has been developed for fabricating nanofiber scaffold gradients for use as 1) scaffold libraries for screening the effect of nanofiber properties on cell response and 2) templates for generating graded tissue interfaces. Alt ...

32. Graphene Epitaxial Growth on SiC(0001) for Resistance Standards
Topic: Advanced Materials
Published: 6/1/2012
Authors: Mariano A. Real, Tian T. Shen, George R Jones, Randolph E Elmquist, Johannes A Soons, Albert Davydov
Abstract: Epitaxial growth of graphene layers on 6H-SiC(0001) substrates have been studied in order to improve graphene‰s performance for metrological applications. A face-to-face (FTF) sublimation method at 2000 °C and in Ar background atmosphere is used to i ...

33. Graphene Epitaxial Growth on SiC(0001) for Resistance Standards
Topic: Advanced Materials
Published: 6/3/2013
Authors: Mariano A. Real, Eric Lass, Fan-Hung H. Liu, Tian T. Shen, George R Jones, Johannes A Soons, David B Newell, Albert Davydov, Randolph E Elmquist
Abstract: A well-controlled technique for high-temperature epitaxial growth on 6H-SiC(0001) substrates is shown to allow development of monolayer graphene that exhibits promise for precise metrological applications. Face-to-face (FTF) and face-to-graphite (FTG ...

34. Inter-Laboratory Comparisons of NbTi Critical Current Measurements
Topic: Advanced Materials
Published: 6/22/2009
Authors: Arno Godeke, D. Turrioni, T. Boutboul, Najib Cheggour, A. K. Ghosh, Loren Frederick Goodrich, M Meinesz, A. den Ouden
Abstract: We report on a multi-institute comparison of critical current data, measured on a modern Large Hadron Collider (LHC) NbTi wire that has shown a standard deviation below 1% in critical current density spread in more than 1500 measurements. Inter-labor ...

35. Internal tin Nb3Sn conductors engineered for fusion and particle accelerator applications
Topic: Advanced Materials
Published: 6/22/2009
Authors: Jeffrey Parrell, Y. Zhang, Michael Field, M Meinesz, Yonghua Huang, H Miao, Seungok Hong, Najib Cheggour, Loren Frederick Goodrich
Abstract: The critical current density (Jc) of Nb3Sn strand has been significantly improved over the last several years. For most magnet applications, high Jc internal tin has displaced bronze process strand. The highest Jc values are obtained from distributed ...

36. 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 ...

37. Materials Testing Standards for Additive Manufacturing of Polymer Materials: State of the Art and Standards Applicability
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 8059
Topic: Advanced Materials
Published: 5/15/2015
Author: Aaron M Forster
Abstract: Additive manufacturing (AM) continues to grow as an advanced manufacturing technique. The most recent industry report from Wohlers and Associates indicates AM represented $1.6Bin revenue from parts, systems, and other supporting industries in 201 ...

38. 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 J. 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 ...

39. 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 ...

40. Measuring the viscoelastic properties of confined polymer films by thermal wrinkling
Topic: Advanced Materials
Published: 3/21/2010
Authors: Edwin P Chan, Kirt A. 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 ...

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