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Search Publications by: Richard S. Gates (Assoc)

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Displaying 26 - 50 of 58

Prototype Cantilevers for AFM Lateral Force Measurement

June 2, 2008
Author(s)
Richard S. Gates, Mark Reitsma
One of the major difficulties in calibrating the lateral forces measured with optical lever Atomic Force Microscopy is in determining the lateral optical lever sensitivity. Novel cantilevers have been designed and fabricated to simplify this measurement

Prototype Cantilevers for SI Traceable NanoNewton Force Calibration

September 20, 2006
Author(s)
Richard S. Gates, Jon R. Pratt
A series of extremely uniform prototype reference cantilevers has been created that can be used to calibrate the spring constants of atomic force microscope (AFM) cantilevers and other micromechanical structures. By utilizing optimal combinations of

Prototype Cantilevers for SI-Traceable NanoNewton Force Calibration

September 20, 2006
Author(s)
Richard S. Gates, Jon R. Pratt
A series of extremely uniform prototype reference cantilevers have been created that can be used to calibrate the spring constants of atomic force microscope (AFM) cantilevers and other micromechanical structures. By utilizing optimal combinations of

New Reference Standards and Artifacts for Nanoscale Physical Property Characterization

January 1, 2006
Author(s)
Jon R. Pratt, John A. Kramar, Gordon A. Shaw, Richard S. Gates, Paul Rice, John M. Moreland
This paper provides an overview of calibration artifacts being developed at the National Institute of Standards and Technology (NIST) that are intended to aid the accurate determination of nanoscale physical properties across a broad range of applications

Use of Transfer Artifacts for Small Force Measurement

January 1, 2006
Author(s)
Gordon A. Shaw, Jon R. Pratt, Richard S. Gates, Mark Reitsma
In order for the atomic microscope (AFM) to be used in truly quantatitive studies, a basis within the international system of units (SI) must be established. In order to do this, the microfabricated cantilevers typically used for AFM force measurements

Boundary Lubricated Wear

July 15, 2005
Author(s)
Stephen M. Hsu, R G. Munro, M C. Shen, Richard S. Gates
This chapter reviews the fundamental nature of wear under lubricated conditions and presents a comprehensive view of our current understanding of the wear processes under boundary lubrication conditions. Wear under lubricated conditions can be classified

Boundary Lubricating Film: Formation and Lubrication Mechanism

March 4, 2005
Author(s)
Stephen M. Hsu, Richard S. Gates
Boundary lubricating films are critical in effective lubrication of engine components. Their formation mechanism has not been fully understood because of the large variations of chemistry and machinery in operation. Various reports on boundary lubricating

Boundary Lubrication and Boundary Lubricating Film

March 3, 2005
Author(s)
Stephen M. Hsu, Richard S. Gates
This chapter offers a comprehensive summary of current understanding in boundary lubrication and the formation of boundary lubricating films. Classical and modern definitions of boundary lubrication are presented which serve to define the scope of boundary

Tribochemistry Between Water and Si 3 N 4 and SiC: Induction Time Analysis

October 1, 2004
Author(s)
Richard S. Gates, Stephen M. Hsu
Avanced ceramics are being considered as one of the potential materials for high temperature steam engines. Silicon nitride and silicon carbide have demonstrated in laboratory bench wear tests that under low loads and medium speed conditions, water is an