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You searched on: Topic Area: Nanotechnology

Displaying records 51 to 60 of 195 records.
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51. Discriminating the states of matter in metallic nanoparticle transformations: What are we missing?
Topic: Nanotechnology
Published: 2/20/2013
Authors: John M Pettibone, Julien C. Gigault, Vincent A Hackley
Abstract: A limiting factor in assessing the risk of current and emerging nanomaterials in biological and environmental systems is the ability to accurately detect and characterize their size, shape and composition in broad distributions and complex media. Asy ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913009

52. ELECTRICAL AND PHYSICAL CHARACTERIZATION OF BILAYER CARBOXYLIC ACID FUNCTIONALIZED MOLECULAR LAYERS
Topic: Nanotechnology
Published: 1/30/2013
Authors: Sujitra Jeanie Pookpanratana, Joseph William Robertson, Cherno Jaye, Daniel A Fischer, Curt A Richter, Christina Ann Hacker
Abstract: We have used Flip Chip Lamination (FCL) to form monolayer and bilayer molecular junctions of carboxylic acid-containing molecules with Cu atom incorporation. Carboxylic acid-terminated monolayers are self-assembled onto ultrasmooth Au using thiol che ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912203

53. Real-Time Size Discrimination and Elemental Analysis of Gold Nanoparticles using ES-DMA coupled to ICP-MS
Topic: Nanotechnology
Published: 1/22/2013
Authors: Sherrie R. Elzey, De-Hao D. Tsai, Lee Lijian Yu, Michael R Winchester, Michael E Kelley, Vincent A Hackley
Abstract: We report the development of a hyphenated instrument with the capacity to quantitatively characterize aqueous suspended gold nanoparticles (AuNPs) based on a combination of gas-phase size separation, particle counting, and elemental analysis. A custo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912171

54. Standard Guide for Size Measurement of Nanoparticles Using Atomic Force Microscopy
Topic: Nanotechnology
Published: 1/1/2013
Authors: Vincent A Hackley, Frank W DelRio
Abstract: The purpose of this document is to provide guidance on the quantitative application of atomic force microscopy (AFM)to determine the size of nanoparticles2 deposited in dry form on flat substrates using height (z-displacement) measurement. Unlike ele ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912221

55. First-principles modeling of gold adsorption on BeO (0001)
Topic: Nanotechnology
Published: 10/29/2012
Authors: Shmuel Barzilai, Francesca M Tavazza, Lyle E Levine
Abstract: Gold nanowire chains are considered a good candidate for nanoelectronics devices since they exhibit remarkable structural and electrical properties. For practical engineering devices, -wurtzite BeO may be a useful platform for supporting the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911264

56. Temperature-dependent mechanical-resonance frequencies and damping in ensembles of gallium nitride nanowires
Topic: Nanotechnology
Published: 10/22/2012
Authors: Kristine A Bertness, Norman A Sanford, J. R. Montague, H.S. Park, Victor M. Bright, C. T. Rogers
Abstract: We have measured singly clamped cantilever mechanical-resonances in ensembles of as-grown gallium nitridenanowires (GaN NWs), from 12 K to 320 K. Resonance frequencies are approximately linearly dependent on temperature near 300 K ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910038

57. Evaluation of viability and proliferation profiles on macrophages treated with silica nanoparticles in vitro via plate-based, flow cytometry, and Coulter counter assays
Topic: Nanotechnology
Published: 9/3/2012
Authors: Simona Bancos, De-Hao D. Tsai, Vincent A Hackley, J L Weaver, Katherine M Tyner
Abstract: Nanoparticles (NPs) are known to interfere with many high throughput cell viability and cell proliferation assays, which complicates the assessment of their potential toxic effects. The aim of this study was to compare viability and proliferation res ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911765

58. Void formation in nanowire contacts revealed
Topic: Nanotechnology
Published: 8/23/2012
Author: Kristine A Bertness
Abstract: Popular contact scheme to p-type GaN fails when applied to nanowires.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912070

59. Characterization of Surface Accumulation and Release of Nanosilica During Irradiation of Polymer Nanocomposites with Ultraviolet Light
Topic: Nanotechnology
Published: 8/12/2012
Authors: Tinh Nguyen, Bastien T. Pellegrin, Coralie Bernard, Savelas A Rabb, Paul E Stutzman, Justin M Gorham, Xiaohong Gu, Lee Lijian Yu, Joannie W Chin
Abstract: Nanofillers are increasingly used for enhancing multiple properties of polymeric materials in many applications. However, polymers are susceptible to photodegradation by solar ultraviolet (UV) radiation Therefore, nanofillers in a polymer nanocompos ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909878

60. Effects of chlorine and other water quality parameters on the release of silver nanoparticles from a ceramic surface
Topic: Nanotechnology
Published: 8/11/2012
Authors: Michael W Stewart, Angela Bielefeldt, Elisabeth Mansfield, R. Scott Summers, Joseph N Ryan
Abstract: A quartz crystal microbalance was used to determine the effects of different water quality parameters on the desorption of silver nanoparticles from surfaces representative of ceramic water filters (CWFs). Silver nanoparticles stabilized with 25-30% ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911517



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