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You searched on: Author: Stephanie Hooker

Displaying records 1 to 10 of 11 records.
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1. Thermogravimetric analysis of NIST's single-wall carbon nanotube reference material
Published: 1/25/2011
Authors: Elisabeth Mansfield, Stephanie A Hooker

2. Measuring Up to Sustainable Water, NIST-Virginia Tech Workshop on Aging Water Infrastructure September 9-10 2010
Series: Special Publication (NIST SP)
Published: 9/9/2010
Authors: Stephanie A Hooker, Christopher N McCowan, Sunil K. Sinha, Mark Edwards
Abstract: The NIST-VT workshop identified funding priorities for federal institutions and other funding sources for sustainable water infrastructure systems in order to align fundamental and applied research with long-term needs. The workshop started with seve ...

3. Quartz Crystal Microbalances for Microscale Thermogravimetric Analysis
Published: 6/20/2010
Authors: Elisabeth Mansfield, Aparna Kar, Stephanie A Hooker
Abstract: A new method for analyzing the chemical purity and consistency of microscale samples is described using a quartz crystal microbalance (QCM) sensor platform. The QCM is used to monitor sub-picogram changes in the mass of a deposited thin film as a fu ...

4. Applications of Thermogravimetric Analysis in Quality Control of Single-Walled Carbon Nanotubes
Published: 2/1/2010
Authors: Elisabeth Mansfield, Aparna Kar, Stephanie A Hooker
Abstract: Carbon nanotube exhibit a range of chemistries, including mixtures of different nanotube diameters, lengths and chiralities, coupled with various concentrations of metallic and non-nanotube carbon impurities. The performance of a given material for ...

5. Sample Preparation Protocols for Realization of Reproducible Characterization of Single-walled Carbon Nanotubes
Published: 12/1/2009
Authors: Angela R Hight Walker, Jeffrey A Fagan, Stephanie A Hooker, Michael T Postek, Stephen A Wise, Andras Vladar, Rolf Louis Zeisler
Abstract: Harmonized sample pre-treatment is an integral first step in ensuring metrological quality of measurements as regards repeatability, inter-laboratory reproducibility and commutability. The development of standard preparation methods for SWCNT sample ...

6. Measurement Issues in Single-Wall Carbon Nanotubes
Series: Special Publication (NIST SP)
Report Number: 960.19
Published: 3/15/2008
Authors: S Arepalli, Stephen Weil Freiman, Stephanie A Hooker, Kalman D Migler
Abstract: Recommended Practice Guide for Single Wall Carbon Nanotube Characterization consisting of five chapters: Introduction; Thermogravimetric Analysis (TGA) ; Near-IR Spectroscopy (NIR), Raman Spectroscopy, Optical, Electron, and Scanned Probe Microscopy.

7. Characterization of degradation mechanisms in neural recording electrodes
Published: 8/1/2007
Authors: Jennifer Anton, Stephanie A Hooker
Abstract: Understanding the nature of specific neural activity is essential to the progression of research in the field of brain disorders and diseases, as well as neuroprosthetics. Microelectrodes are the primary measurement devices used to transduce neural a ...

Published: 7/1/2007
Authors: Stephanie A Hooker, Roy Howard Geiss, Aparna Kar
Abstract: Carbon nanotubes have unique properties of interest for applications in aerospace, electronics, and biotechnology. However, the properties of different batches of carbon nanotubes can vary considerably depending on chemical purity and the nanotube ty ...

9. Characterization of Carbon Nanotube Purity Using a Quartz Sensor Platform
Published: 11/28/2005
Authors: Stephanie A Hooker, Ryan Schilt, Natalia Varaksa, John H Lehman, Paul Rice
Abstract: Carbon nanotubes are revolutionary materials, with properties that are vastly different than any other bulk form of carbon. Their unique combination of electrical, mechanical, and thermal properties makes them attractive for applications in advanced ...

10. Miniature Piezoceramic Actuators with Improved Fatigue Resistance
Published: 6/1/2005
Authors: Stephanie A Hooker, Jens Mueller, Clayton Kostelecky, K. Womer
Abstract: Piezoelectric ceramics are desirable actuator materials for many biomedical applications due to their ability to generate precise, controlled motion with applied voltage. Herein, we report the fabrication of miniature piezoelectric ceramic actuators ...

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