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Author: ronald dixson

Displaying records 31 to 40 of 116 records.
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31. Measurement Traceability and Quality Assurance in a Nanomanufacturing Environment
Published: 9/25/2009
Authors: Ndubuisi George Orji, Ronald G Dixson, Aaron Cordes, Benjamin Bunday, John Allgair
Abstract: A key requirement for nano-manufacturing is maintaining acceptable traceability of measurements performed to determine size. Given that properties and functionality at the nanoscale are governed by absolute size, maintaining the traceability of dimen ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903286

32. A moving window correlation method to reduce the distortion of SPM images
Published: 8/20/2009
Authors: Wei Chu, Joseph Fu, Ronald G Dixson, Ndubuisi George Orji, Theodore Vincent Vorburger
Abstract: Many scanning probe microscopes (SPMs), such as the scanning tunneling microscope (STM) and atomic force microscope (AFM), use piezoelectric actuators operating in open loop for generating the scans of the surfaces. However, nonlinearities mainly cau ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901732

33. Angle-resolved Optical Metrology using Multi-Technique Nested Uncertainties
Published: 8/15/2009
Authors: Richard M Silver, Bryan M Barnes, Hui H. Zhou, Nien F Zhang, Ronald G Dixson
Abstract: This paper introduces recent advances in scatterfield microscopy using improved normalization and fitting procedures. Reduced measurement uncertainties are obtained through the use of more accurate normalization procedures in combination with better ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902735

34. Reference Metrology in a Research Fab: The NIST Clean Calibrations Thrust
Published: 4/12/2009
Authors: Ronald G Dixson, Ndubuisi George Orji, Joseph Fu, Thomas B Renegar, Xiaoyu A Zheng, Theodore Vincent Vorburger, Albert M. Hilton, Marc J Cangemi, Lei Chen, Michael A. Hernandez, Russell E Hajdaj, Michael R Bishop, Aaron Cordes
Abstract: In 2004, the National Institute of Standards and Technology (NIST) commissioned the Advanced Measurement Laboratory (AML) ‹ a state-of-the-art, five-wing laboratory complex for leading edge NIST research. The NIST NanoFab ‹ a 1765 m2 (19,000 ft2) cl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902187

35. Comparison of Measurement Techniques for Linewidth Metrology on Advanced Photomasks
Published: 2/19/2009
Authors: Stewart Smith, Andreas Tsiamis, Martin McCallum, Andrew Hourd, J Stevenson, Anthony Walton, Ronald G Dixson, Richard A Allen, James Edward Potzick, Michael W Cresswell, Ndubuisi George Orji
Abstract: This paper compares electrical, optical, and atomic force microscope (AFM) measurements of critical dimension (CD)made on a chrome on quartz photomask. Test structures suitable for direct, on-mask electrical probing have been measured using the above ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901862

36. 2nd Annual Tri-National Workshop on Standards for Nanotechnology - (NIST presentations)
Published: 12/10/2008
Authors: Ronald G Dixson, Jon Robert Pratt, Vincent A Hackley, James Edward Potzick, Richard A Allen, Ndubuisi George Orji, Michael T Postek, Herbert S Bennett, Theodore Vincent Vorburger, Jeffrey A Fagan, Robert L. Watters
Abstract: A new era of cooperation between North American National Measurement Institutes (NMIs) was ushered by the National Research Council of Canada Institute for National Measurement Standards (NRC-INMS) on February 7, 2007 when the first Tri-National wo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824641

37. International photomask linewidth comparison by NIST and PTB
Published: 10/17/2008
Authors: James Edward Potzick, Ronald G Dixson, Richard Quintanilha, Michael T. Stocker, Andras Vladar, Egbert Buhr, Bernd Bodermann, Wolfgang Hassler-Grohne, Harald Bosse, C.G. Frase
Abstract: In preparation of the international Nano1 linewidth comparison on photomasks between 8 national metrology institutes, NIST and PTB have started a bilateral linewidth comparison in 2008, independent of and prior to the Nano1 comparison in order to tes ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824713

38. Re-calibration of the NIST SRM 2059 Master Standard using Traceable Atomic Force Microscope Metrology
Published: 10/17/2008
Authors: Ronald G Dixson, James Edward Potzick, Ndubuisi George Orji
Abstract: The National Institute of Standards and Technology (NIST) has had a robust program in photomask dimensional metrology since the late 70s when the late Diana Nyyssonen and coworkers developed the first chrome-on-glass (COG) Standard Reference Materi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824724

39. Accuracy Considerations for Critical Dimension Semiconductor Metrology
Published: 9/9/2008
Authors: Ronald G Dixson, Ndubuisi George Orji, B Bunday, J Allgair
Abstract: As the size of integrated circuit features continues to decrease, the accuracy of measurements becomes more important. Due to greater emphasis on precision rather than accuracy, many of the measurements made in semiconductor fabs are not traceable to ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824699

40. Through-focus Scanning and Scatterfield Optical Methods for Advanced Overlay Target Analysis
Published: 9/1/2008
Authors: Ravikiran (Ravikiran) Attota, Michael T. Stocker, Richard M Silver, Nathanael A Heckert, Hui H. Zhou, Richard J Kasica, Lei Chen, Ronald G Dixson, Ndubuisi George Orji, Bryan M Barnes, Peter Lipscomb
Abstract: In this paper we present overlay measurement techniques that use small overlay targets for advanced semiconductor applications. We employ two different optical methods to measure overlay using modified conventional optical microscope platforms. They ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902294



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