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You searched on: Author: hui zhou

Displaying records 21 to 30 of 38 records.
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21. Nested Uncertainties and Hybrid Metrology to Improve Measurement Accuracy
Published: 4/18/2011
Authors: Richard M Silver, Nien F Zhang, Bryan M Barnes, Hui Zhou, Jing Qin, Ronald G Dixson
Abstract: In this paper we present a method to combine measurement techniques that reduce uncertainties and improve measurement throughput. The approach has immediate utility when performing model-based optical critical dimension measurements. When modeling ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908290

22. The Limits and Extensibility of Optical Patterned Defect Inspection
Published: 4/1/2010
Authors: Richard M Silver, Bryan M Barnes, Martin Y Sohn, Richard Quintanilha, Hui Zhou, Chris Deeb, Mark Johnson, Milton Goodwin, Dilip Patel
Abstract: New techniques recently developed at the National Institute of Standards and Technology using bright field optical tools are applied to signal-based defect analysis of features with dimensions well below the measurement wavelength. A key to this app ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905318

23. Angle-resolved Optical Metrology using Multi-Technique Nested Uncertainties
Published: 8/15/2009
Authors: Richard M Silver, Bryan M Barnes, Hui 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

24. Through-focus Scanning and Scatterfield Optical Methods for Advanced Overlay Target Analysis
Published: 9/1/2008
Authors: Ravikiran Attota, Michael T. Stocker, Richard M Silver, Nathanael A Heckert, Hui Zhou, Richard J Kasica, Lei NMN 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

25. A Time-Resolved Kinetic Monte-Carlo Simulation Study On Si (111) Etching
Published: 1/1/2007
Authors: Hui Zhou, Joseph Fu, Richard M Silver
Abstract: In this paper we have extended the Kinetic Monte-Carlo simulation method to study the etching dynamics of Si (111) surfaces in NH4F in a time-resolved basis. We have examined the step-flow dynamics of Si(111) etching using various simulation window s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823196

26. The Influence of Defects on the Morphology of Si (111) Etched in NHF
Published: 1/1/2005
Authors: Hui Zhou, Joseph Fu, Richard M Silver
Abstract: We have implemented a kinetic Monte-Carlo (KMC) simulation to study the morphologies of Si (111) surfaces etched in NHF. Although our initial simulations reproduced the previous results from Hines, it failed to produce the morphologies observed in ou ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823191

27. Nano-Lithography in Ultra-High Vacuum (UHV) for Real World Applications
Published: 3/11/2004
Authors: James D Gilsinn, Hui Zhou, Bradley N Damazo, Joseph Fu, Richard M Silver
Abstract: As nano-lithography technology improves, more companies and research groups have the capability to create nano-scale structures. Scanning tunneling microscopes (STMs) are commonly used to create these structures and evaluate them afterward. One diffi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822480

28. Nano-Lithography in Ultra-High Vacuum (UHV) for Real World Applications
Published: 3/1/2004
Authors: James D Gilsinn, Hui Zhou, Bradley N Damazo, Joseph Fu, Richard M Silver
Abstract: As nano-lithography technology improves, more companies and research groups have the capability to create nano-scale structures. Scanning tunneling microscopes (STMs) are commonly used to create these structures and evaluate them afterward. One diffi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822172

29. Developing Atomic-Resolution Measurements Using a Tunable Diode Laser-Based Interferometer
Published: 10/1/2003
Authors: Hui Zhou, Bradley N Damazo, S Gonda, Richard M Silver
Abstract: A new implementation of a Michelson interferometer capable of resolution on the order of 20 pm has been developed.  This new method uses a tunable diode laser as the light source with the diode laser wavelength continuously tuned to fix the numb ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822230

30. Dependency of Morphology on Miscut Angle for Si(111) Etched in NH^d4^F
Published: 5/1/2003
Authors: Joseph Fu, Hui Zhou, John A Kramar, Richard M Silver, S Gonda
Abstract: Using scanning probe microscopy, we have examined the surfaces produced by etching several different vicinal Si(111) samples in NH^d4^F aqueous solution. In agreement with others, we found that deoxygenation of the etchant generally reduces the numbe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823151



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