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Author: Premsagar Kavuri

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1. Does Your SEM Really Tell the Truth? Part 2
Published: 11/1/2013
Authors: Michael T Postek, Andras Vladar, Premsagar Purushotham Kavuri
Abstract: The scanning electron microscope (SEM) has gone through a tremendous evolution to become indispensable for many and diverse scientific and industrial applications. The first paper in this series, discussed some of the issues related to signal generat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913866

2. Nanomanufacturing Concerns about Measurements made in the SEM II: Specimen Contamination
Published: 11/1/2013
Authors: Michael T Postek, Andras Vladar, Premsagar Purushotham Kavuri
Abstract: The scanning electron microscope (SEM) has gone through a tremendous evolution to become a critical tool for many and diverse scientific and industrial applications. The improvements that have been made have significantly improved the overall SEM per ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914028

3. Nanoparticle Size and Shape Evaluation Using the TSOM Method
Published: 6/1/2012
Authors: Bradley N Damazo, Ravikiran Attota, Premsagar Purushotham Kavuri, Andras Vladar
Abstract: A novel through-focus scanning optical microscopy (TSOM) method that yields nanoscale information from optical images obtained at multiple focal planes will be used here for nanoparticle dimensional analysis. The TSOM method can distinguish not only ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911138

4. Characterization and Resistive Switching Properties of Solution-Processed HfO2, HfSiO4, and ZrSiO4 Thin Films on Rigid and Flexible Substrates
Published: 12/7/2011
Authors: Joseph Leo Tedesco, Walter Zheng, Oleg A Kirillov, Sujitra Jeanie Pookpanratana, Hyuk-Jae Jang, Premsagar Purushotham Kavuri, Nhan V Nguyen, Curt A Richter
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910358

5. Accurate Nanometer-Scale Imaging and Measurements with SEM
Published: 8/18/2011
Authors: Bradley N Damazo, Bin Ming, Premsagar Purushotham Kavuri, Andras Vladar, Michael T Postek
Abstract: Scanning electron microscopes (SEMs) are incredibly versatile instruments for millimeter to nanometer scale imaging and measurements of size and shape. New methods to improve repeatability and accuracy have been implemented on the so-called Referenc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909147

6. AFM characterization of nanopositioner in-plane stiffnesses
Published: 8/19/2010
Authors: Seung Ho Yang, Yong Sik Kim, Premsagar Purushotham Kavuri, Jae Myung Yoo, Young M. Choi, Nicholas G Dagalakis
Abstract: A versatile method for measurement of in-plane stiffness of micro-elements was developed and its usefulness has been demonstrated. The in-plane stiffness of a NIST nanopositioner has been measured directly using a colloidal probe in an AFM without an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906223

7. Elastic Modulus of Faceted Aluminum Nitride Nanotubes Measured by Contact Resonance Atomic Force Microscopy
Published: 12/17/2008
Authors: Gheorghe Stan, C Ciobanu, Timothy Thayer, George Wang, Randall Creighton, Premsagar Purushotham Kavuri, Leonid A Bendersky, Robert Francis Cook
Abstract: A new methodology for determining the radial elastic modulus of a one-dimensional nanostructure laid on a substrate has been developed. The methodology consists of the combination of contact resonance atomic force microscopy (AFM) with finite element ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854145



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