Calibration of an interfacial force microscope for MEMS metrology : FY08-09 activities. (open access)

Calibration of an interfacial force microscope for MEMS metrology : FY08-09 activities.

Progress in MEMS fabrication has enabled a wide variety of force and displacement sensing devices to be constructed. One device under intense development at Sandia is a passive shock switch, described elsewhere (Mitchell 2008). A goal of all MEMS devices, including the shock switch, is to achieve a high degree of reliability. This, in turn, requires systematic methods for validating device performance during each iteration of design. Once a design is finalized, suitable tools are needed to provide quality assurance for manufactured devices. To ensure device performance, measurements on these devices must be traceable to NIST standards. In addition, accurate metrology of MEMS components is needed to validate mechanical models that are used to design devices to accelerate development and meet emerging needs. Progress towards a NIST-traceable calibration method is described for a next-generation, 2D Interfacial Force Microscope (IFM) for applications in MEMS metrology and qualification. Discussed are the results of screening several suitable calibration methods and the known sources of uncertainty in each method.
Date: October 1, 2009
Creator: Houston, Jack E.; Baker, Michael Sean; Crowson, Douglas A.; Mitchell, John Anthony & Moore, Nathan W.
System: The UNT Digital Library
Department of Justice (DOJ) Appropriations for FY2008 and FY2009 (open access)

Department of Justice (DOJ) Appropriations for FY2008 and FY2009

This report provides coverage of the FY2009 appropriations cycle for the Department of Justice (DOJ), including FY2008 supplemental appropriations.
Date: August 1, 2008
Creator: Krouse, William J.; Franco, Celinda & James, Nathan
System: The UNT Digital Library
Multilateral Development Banks: U.S. Contributions FY2000-FY2013 (open access)

Multilateral Development Banks: U.S. Contributions FY2000-FY2013

This report shows in tabular form how much the Administration requested and how much Congress appropriated for U.S. payments to the multilateral development banks (MDBs) since 2000. It also provides a brief description of the MDBs and the ways they fund their operations. It will be updated periodically as annual appropriation figures are known.
Date: February 1, 2013
Creator: Nelson, Rebecca M.
System: The UNT Digital Library