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You searched on: Topic Area: Nanotechnology Sorted by: date

Displaying records 21 to 30 of 203 records.
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21. Mechanisms of aging and release from weathered nanocomposites
Topic: Nanotechnology
Published: 10/31/2014
Authors: Tinh Nguyen, Wendel Wohlleben, Li Piin Sung
Abstract: Polymer nanocomposites are increasingly used in outdoor structures. However, polymers are susceptible to degradation by solar ultraviolet (UV) radiation, which potentially releases nanofiller during polymer nanocomposites‰ life cycle. Such release ma ...

22. Nanoparticle size determination using optical microscopes
Topic: Nanotechnology
Published: 10/27/2014
Authors: Ravikiran Attota, Richard J Kasica, Premsagar Purushotham Kavuri, Hyeong Gon (Hyeonggon) 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 ...

23. 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 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 ...

24. Photoelectron spectroscopy of wet and gaseous samples through electron transparent graphene membranes
Topic: Nanotechnology
Published: 9/22/2014
Authors: Jurgen Kraus, Robert Reichelt, Sebastian Gunther, Luca Gregoratti, Matteo Amati, Maya Kiskinova, Alexander Yulaev, Ivan Vlassiouk, Andrei A Kolmakov
Abstract: Photoelectron spectroscopy (PES) and microscopy are highly demanded for exploring morphologically complex solid-gas and solid-liquid interfaces under realistic conditions but the very small electron mean free path inside the dense media imposes serio ...

25. Multiscale Correlative Measurements of Nanoparticles in Cells
Topic: Nanotechnology
Published: 8/26/2014
Authors: Aric Warner Sanders, Kavita M Jeerage, Cindi Schwartz, Alexandra E Curtin, Ann Chiaramonti Chiaramonti Debay
Abstract: Nanoparticles are emerging as invaluable tools in disease diagnosis, disease treatment and imaging contrast enhancement agents. The interactions of nanoparticles with host organisms are complex and affect biological systems over length scales that va ...

26. Reliability of Low Temperature Grown Multi-Wall Carbon Nanotube Bundles Integrated as Vias in Monolithic Three-Dimensional Integrated Circuits
Topic: Nanotechnology
Published: 8/26/2014
Authors: Ann Chiaramonti Chiaramonti Debay, Sten Vollebregt, Aric Warner Sanders, Alexandra E Curtin, R. Ishihara, David Thomas Read
Abstract: In this extended abstract we present our recent results on the reliability testing of multi-wall carbon nanotube vertical interconnects (vias).

27. Dominant Thermal Boundary Resistance in Multi-Walled Carbon Nanotube Bundles Fabricated at Low Temperatures
Topic: Nanotechnology
Published: 7/11/2014
Authors: Ann Chiaramonti Chiaramonti Debay, Sten Vollebregt, Sarbajit Banerjee, Kees Beenakker, R. Ishihara
Abstract: While carbon nanotubes (CNT) have been suggested as thermal management mate- rial for integrated circuits, the thermal properties and especially the thermal bound- ary resistance (TBR) of as-grown CNT have hardly been investigated. Here the therma ...

28. 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 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 ...

29. Multi-method analysis of multiwall carbon nanotube polymer nanocomposite samples after photodegradation
Topic: Nanotechnology
Published: 6/16/2014
Authors: Elijah J Petersen, Thomas F. Lam, Justin M Gorham, Keana C K Scott, Christian John Long, Renu Sharma, Li Piin Sung, James Alexander Liddle, Tinh 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 ...

30. Use of Single Particle Inductively Coupled Plasma Mass Spectrometry to Characterize a New Silver Nanoparticle Reference Material
Topic: Nanotechnology
Published: 6/11/2014
Authors: Karen E Murphy, Jingyu Liu, William F Guthrie, Justin M Gorham, John E Bonevich, Andrew John Allen, Michael R Winchester, Vincent A Hackley, Robert MacCuspie
Abstract: In this study we use inductively coupled plasma mass spectrometry operated in single particle mode (spICP-MS) to simultaneously characterize the size distribution and dissolved silver fraction of a new silver nanoparticle (AgNP) candidate reference m ...

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