Mr. Leonard S. Fifield Profile

Leonard S. Fifield

Scientist at Pacific Northwest National Lab

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Author

Publications (5)

Proceedings Article | 19 April 2017 Presentation + Paper

A comparison of different NDE signal processing techniques based on waveform entropies applied to long fiber-graphite/epoxy-plates

Michael Larche, Mathew Prowant, Paul Bruillard, Tobias Hagge, Leonard Fifield, Michael Hughes, Xin Sun

Proceedings Volume 10169, 101690T (2017) https://doi.org/10.1117/12.2260490

KEYWORDS: Carbon, Transducers, Image segmentation, Ultrasonics, Thermodynamics, Nondestructive evaluation, Signal processing, Composites, Ultrasonography, Data acquisition, Sensor networks, Structural health monitoring

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Proceedings Article | 19 April 2017 Presentation + Paper

Non-destructive evaluation of polyolefin thermal aging using infrared spectroscopy

Leonard Fifield, Yongsoon Shin, Kevin Simmons

Proceedings Volume 10169, 101690U (2017) https://doi.org/10.1117/12.2261983

KEYWORDS: Absorbance, Spectroscopy, Oxidation, Nondestructive evaluation, FT-IR spectroscopy, Composites, Polymers, Infrared spectroscopy, Attenuated total reflectance, Dielectrics

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Proceedings Article | 15 November 2002 Paper

Investigation of the capacitance minimum of unannealed single-walled carbon nanotube papers in aqueous sodium chloride

Leonard Fifield, Larry Dalton, Geoffrey Spinks

Proceedings Volume 4807, (2002) https://doi.org/10.1117/12.456530

KEYWORDS: Capacitance, Single walled carbon nanotubes, Carbon nanotubes, Actuators, Carbon, Electrodes, Sodium, Annealing, Nanolithography, Capacitors

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Proceedings Article | 16 July 2001 Paper

Conducting polymer, carbon nanotube, and hybrid actuator materials

Geoffrey Spinks, Gordon Wallace, Christopher Carter, Dezhi Zhou, Leonard Fifield, Clint Kincaid, Ray Baughman

Proceedings Volume 4329, (2001) https://doi.org/10.1117/12.432646

KEYWORDS: Actuators, Polymers, Coating, Carbon nanotubes, Polymeric actuators, Ions, Electrodes, Thin film coatings, Doping, Scanning electron microscopy

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Proceedings Article | 6 April 2001 Paper

Electrochemically driven actuators from conducting polymers, hydrogels, and carbon nanotubes

Geoffrey Spinks, Gordon Wallace, Trevor Lewis, Leonard Fifield, Liming Dai, Ray Baughman

Proceedings Volume 4234, (2001) https://doi.org/10.1117/12.424410

KEYWORDS: Polymers, Actuators, Carbon nanotubes, Ions, Carbon, Single walled carbon nanotubes, Capacitance, Electrodes, Chemical species, Oxidation

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