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Topic Area: Nanotechnology
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1. The Economic Impacts of Early Stage Consensus Standards Development: A Case Study of Nanotechnology Documentary Standards
Series: Grant/Contract Reports (NISTGCR)
Topic: Nanotechnology
Published: 11/30/2014
Authors: David P. Leech, John T. Scott
Abstract: This economic impact assessment focuses on documentary standards development for nanotechnology. Nanotechnology developments and applications are just emerging; thus, the standards studied in this report are regarded as ,early-stageŠ or ,proactiveŠ s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917398

2. Nanoparticle size determination using optical microscopes
Topic: Nanotechnology
Published: 10/27/2014
Authors: Ravikiran Attota, Richard J Kasica, Premsagar Purushotham Kavuri, Hyeong Gon Kang, Lei Chen
Abstract: We present a simple method for size determination of nanoparticles using conventional optical microscopes. The method, called through-focus scanning optical microscopy (TSOM), makes use of the four-dimensional optical information collected at differe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914209

3. A pilot interlaboratory comparison of protocols that simulate aging of nanocomposites and detect released fragments
Topic: Nanotechnology
Published: 10/1/2014
Authors: Wendel Wohlleben, Deborah L Stanley, Justin M Gorham, Li Piin Sung, Tinh T. Nguyen
Abstract: The safe use of nanocomposites depends, in part, on a good understanding of the fate of nanofillers throughout the nanocomposite,s lifecycle. Various modifications of ISO weathering protocols have been proposed to assess what is released and at which ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916125

4. Effects of Temperature on Surface Accumulation and Release of Silica Nanoparticles in an Epoxy Nanocoating Exposed to UV Radiation
Topic: Nanotechnology
Published: 6/16/2014
Authors: Chun-Chieh Tien, Ching-Hsuan Chang, Bernard Hao-Chih Liu, Deborah L Stanley, Savelas A Rabb, Lee Lijian Yu, Tinh T. Nguyen, Li Piin Sung
Abstract: Polymer nanocoatings are increasingly used outdoors and in harsh environments. However, because most common polymers degraded by the weathering elements, nanoparticles in polymer nanocoatings may be released into the environments. Such nanoparticle r ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915955

5. Multi-method analysis of multiwall carbon nanotube polymer nanocomposite samples after photodegradation
Topic: Nanotechnology
Published: 6/16/2014
Authors: Elijah J Petersen, Thomas Fung Lam, Justin M Gorham, Keana C K Scott, Christian John Long, Renu Sharma, Li Piin Sung, James Alexander Liddle, Tinh T. Nguyen
Abstract: Nanomaterials can be used as nanofillers to enhance the properties of polymeric materials. However, the effect of weathering on nanocomposites and the potential for nanomaterial release is not yet well understood. Multiple analytical methods are ne ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915812

6. Does Your SEM Really Tell the Truth? How Would You Know? Part 2
Topic: Nanotechnology
Published: 5/30/2014
Authors: Michael T Postek, Andras Vladar, Premsagar Purushotham Kavuri
Abstract: The scanning electron microscope (SEM)has gone through a tremendous evolution to become indispensable for many and diverse scientific and industrial applications. The improvements have significantly enriched and augmented the overall SEM performance ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915610

7. Localization and electron-electron interactions in few-layer epitaxial graphene
Topic: Nanotechnology
Published: 5/28/2014
Authors: Randolph E Elmquist, Fan-Hung Liu, Lung-I Huang, Yasuhiro Fukuyama, Chi-Te Liang, Yanfei Yang
Abstract: We study the quantum corrections caused by electron-electron (e-e) interactions and localization to the conductivity in few-layer epitaxial graphene, in which the carriers responsible for transport are massive. Our results demonstrate that the diffus ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915647

8. Single molecule confocal fluorescence lifetime correlation spectroscopy for accurate nanoparticle size determination
Topic: Nanotechnology
Published: 5/15/2014
Authors: Bonghwan Chon, Kimberly A Briggman, Jeeseong Hwang
Abstract: We report on an experimental procedure in confocal single molecule fluorescence lifetime correlation spectroscopy (FLCS) to determine the range of excitation power and molecule concentration in solution under which the application of an unmodified ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914381

9. Comparison of the Properties of Cellulose Nanocrystals and Cellulose Nanofibrils Isolated From Bacteria, Tunicate, and Wood Processed Using Acid, Enzymatic, Mechanical, and Oxidative Methods
Topic: Nanotechnology
Published: 4/18/2014
Authors: Iulia Alisa Sacui, Jeffrey W Gilman, Ryan C Nieuwendaal, Stephan J Stranick, Henryk Szmacinski, Mehdi Jorfi, Christopher Weder, Johan Foster, Richard Olsson, Daniel Burnett
Abstract: This work describes the study and characterization of native cellulose nanocrystals and nanofibrils (CNCs, CNFs), whose crystallinity, morphology, aspect ratio, and surface chemistry depend on the raw material source and hydrolysis conditions. Me ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915137

10. Preparation of nanocomposite plasmonic films made from cellulose nanocrystals or mesoporous silica decorated with unidirectionally aligned gold nanorods
Topic: Nanotechnology
Published: 4/11/2014
Authors: Michael Campbell, Qingkun Liu, Aric Warner Sanders, Julian Evans, Ivan I. Smalyukh
Abstract: Using liquid crystalline self-assembly of cellulose nanocrystals, we achieve long-range alignment of anisotropic metal nanoparticles in colloidal nanocrystal dispersions that are then used to deposit thin structured films with ordering features h ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915636



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