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Author: yvonne gerbig
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1. Combinatorial study of the crystallinity boundary in the HfO2-TiO2-Y2O3 system using pulsed laser deposition library thin films
Published: 5/16/2008
Authors: Peter K. Schenck, Jennifer L Klamo, Nabil Bassim, Peter G. Burke, Yvonne Beatrice Gerbig, Martin L Green
Abstract: HfO2-TiO2-Y2O3 is an interesting high-k dielectric system.  Combinatorial library films of this system enable the study of the role of composition on phase formation as well as optical and mechanical properties.  A library film of this syst ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853610

2. Comparison of Nanoscale Measurements of Strain and Stress using Electron Back Scattered Diffraction and Confocal Raman Microscopy
Published: 12/12/2008
Authors: Mark D Vaudin, Yvonne Beatrice Gerbig, Stephan J Stranick, Robert Francis Cook
Abstract: Strains in Si as small as 104 (corresponding to stresses of 10 MPa) have been measured using electron back scatter diffraction (EBSD), with spatial resolution close to 10 nm, and confocal Raman microscopy (CRM) with spatial resolution app ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854129

3. Direct observation of phase transformation anisotropy in indented silicon using confocal Raman microscopy
Published: 5/31/2011
Authors: Yvonne Beatrice Gerbig, Stephan J Stranick, Robert Francis Cook
Abstract: The theoretically-predicted anisotropic nature of the indentation phase transformation in silicon (Si) is observed directly in experiments using hyperspectral, confocal Raman microscopy. The anisotropy is reflected in the two-dimensional distribution ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906105

4. Effect of crystallographic orientation on phase transformations during indentation of silicon
Published: 3/9/2009
Authors: Yvonne Beatrice Gerbig, Dylan Morris, Stephan J Stranick, Mark D Vaudin, Robert Francis Cook
Abstract: In a statistical nanoindentation study using a spherical probe, the effect of crystallographic orientation on the phase transformation of silicon (Si) was investigated. The presence and pressure at which events associated with phase transformation oc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854143

5. Improving Fatigue Strength of Alumina through Surface Grading
Published: 5/9/2011
Authors: Yvonne Beatrice Gerbig, Linlin Ren, Lela Liu, Sanjit Bhowmick, Malvin Janal, Van Thompson, Yu Zhang
Abstract: Porcelain veneered alumina crown restorations often fail from bulk fracture resulting from radial cracks that initiate at the cementation surface with repeated flexure of the stiffer crown layers on the soft dentin support. We hypothesize that bulk f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907566

6. In situ observation of the indentation-induced phase transformation of silicon thin films
Published: 3/5/2012
Authors: Yvonne Beatrice Gerbig, Chris A Michaels, Aaron M Forster, Robert Francis Cook
Abstract: Indentation-induced phase transformation processes were studied by in situ Raman microspectroscopy of the deformed contact region of silicon on sapphire samples during contact loading and unloading. During loading, the formation of Si-II and another ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910047

7. Indentation device for in situ Raman spectroscopic and optical studies
Published: 12/12/2012
Authors: Yvonne Beatrice Gerbig, Chris A Michaels, Aaron M Forster, John W Hettenhouser, Walter Eric Byrd, Dylan J. Morris, Robert Francis Cook
Abstract: Instrumented indentation is a widely used technique to study the mechanical behavior of materials at small length scales and thus has been exploited in particular for metals, ceramics, glasses, and polymers. Mechanical tests of bulk materials, micros ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911470

8. Measurement of residual stress field anisotropy at indentations in silicon
Published: 6/23/2010
Authors: Yvonne Beatrice Gerbig, Stephan J Stranick, Robert Francis Cook
Abstract: The residual stress field around spherical indentations on single crystal silicon (Si) of different crystallographic orientation is mapped by confocal Raman microscopy. All orientations exhibit an anisotropic stress pattern with an orientation spec ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905445

9. Stress-Intensity Factor and Toughness Measurement at the Nanoscale using Confocal Raman Microscopy
Published: 7/12/2009
Authors: Robert Francis Cook, Yvonne Beatrice Gerbig, Mark D Vaudin, Jeroen Schoenmaker, Stephan J Stranick
Abstract: A confocal Raman microscopy technique is presented that allows stress measurement at the nanoscale, which in turn enables measurement of stress-intensity factors (SIF) at crack tips and thus toughness to be estimated. Peak-fitting and super-resolutio ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900910

10. THE ROLE OF TOOTH ENAMEL MECHANICAL PROPERTIES IN PRIMATE DIETARY ADAPTATION
Published: 6/27/2012
Authors: Paul Constantino, James J. Lee, Yvonne Beatrice Gerbig, Adam Hartstone-Rose, Mauricio Talebi, Brian Ronald Lawn, Peter Lucas
Abstract: Primate teeth adapt to the physical properties of foods in a variety of ways including changes in occlusal morphology, enamel thickness, and overall size. We conducted a comparative study of extant primates to examine whether their teeth also adap ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907407



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