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1. 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

2. 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

3. AFM Characterization of Semiconductor Line Edge Roughness, Edited by B. Bhushan, H. Fuchs, and S. Hosaka
Published: 3/5/2004
Authors: Ndubuisi George Orji, M. Sanchez, Jayaraman Raja, Theodore Vincent Vorburger
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902000

4. 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

5. Advanced Metrology Needs for Nanoelectronics Lithography
Published: 10/1/2006
Authors: Stephen Knight, Ronald Dixon, Ronald Leland Jones, Eric Lin, Ndubuisi G Orji, Richard M Silver, Andras Vladar, Wen-li Wu
Abstract: The semiconductor industry has exploited productivity improvements through aggressive feature size reduction for over four decades. While enormous effort has been expended in developing the optical lithography tools to print ever finer features, sign ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32439

6. Application of Carbon Nanotube Probes in a Critical Dimension Atomic Force Microscope
Published: 3/1/2007
Authors: B C. Park, J Choi, S J Ahn, D H Kim, L Joon, Ronald G Dixson, Ndubuisi George Orji, Joseph Fu, Theodore Vincent Vorburger
Abstract: The ever decreasing size of semiconductor features demands the advancement of critical dimension atomic force microscope (CD-AFM) technology, for which the fabrication and use of more ideal probes like carbon nanotubes (CNT) is of considerable intere ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823234

7. Atomic Level Surface Metrology
Published: 1/1/2001
Authors: Theodore Vincent Vorburger, Ronald G Dixson, Jun-Feng Song, Thomas B Renegar, Joseph Fu, Ndubuisi George Orji, V W. Tsai, E. C. Williams, H Edwards, D Cook, P West, R Nyffenegger
Abstract: MotivationSemiconductor wafers and many types of optical elementsrequire ultra-smooth surfaces in order to functionas specifiedExamples:Laser gyro mirrors with rms roughness ~ 0.1 nmSilicon gate oxides with thickness ~ 3 nm,rms roughness must be sign ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823146

8. CD-AFM Reference Metrology at NIST and SEMATECH
Published: 2/27/2005
Authors: Ronald G Dixson, Jing Fu, Ndubuisi G Orji, William F Guthrie, Richard A Allen, Michael W Cresswell
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32108

9. Calibration of 1 nm SiC Step Height Standards
Published: 3/31/2010
Authors: Theodore Vincent Vorburger, Albert M. Hilton, Ronald G Dixson, Ndubuisi George Orji, J. A. Powell, A. J. Trunek, P. G. Neudeck, P. B. Abel
Abstract: We aim to develop and calibrate a set of step height standards to meet the range of steps useful for nanotechnology. Of particular interest to this community is the calibration of atomic force microscopes operating at their highest levels of magnifi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905193

10. Comparison and Uncertainties of Standards for CD-AFM Microscope Tip Width Calibration
Published: 4/5/2007
Authors: Ronald G Dixson, Ndubuisi George Orji
Abstract: Since the advent of critical-dimension atomic force microscopes (CD-AFMs) inthe 90s, these tools have enjoyed growing acceptance in semiconductormanufacturing both for process development and to support in-line criticaldimension (CD) metrology.   ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823230



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