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Author: vivek prabhu

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1. Formation of Disk- and Stacked Disk-Like Self-Assembled Morphologies from Cholesterol Functionalized Aliphatic Polycarbonate Containing Amphiphilic Diblock Copolymers
Published: 6/10/2013
Authors: Vivek M Prabhu, Shrinivas Venkataraman , Ashlynn Lee, Yi Yan Yang, James Hedrick, Hareem Maune
Abstract: In this study, a cholesterol functionalized aliphatic cyclic carbonate monomer, 2-(5-methyl-2-oxo-1,3-dioxane-5-carboxyloyloxy)ethyl carbamate (MTC-Chol) was synthesized. The organo-catalytic ring opening polymerization of MTC-Chol was accomplished ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912990

2. Aggregation/agglomeration state of carbon nanotubes
Published: 10/12/2012
Authors: Vivek M Prabhu, Toshiya Okazaki, Takeshi Eitoku, Masayoshi Tange, Haruhisa Kato
Abstract: Evaluation of aggregation and agglomeration of carbon nanotube (CNT) solution has been one of the key issues for applications. Here we introduce a simple method based on depolarized dynamic light scattering (DDLS) performed at multiple scattering ang ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912177

3. Vertically Segregated Structure and Properties of small molecule-polymer blend semiconductors for organic thin film transistors
Published: 8/27/2012
Authors: Nayool Shin, Dean M DeLongchamp, Jihoon Kang, Regis J Kline, Lee J Richter, Vivek M Prabhu, Balaji Purushothamanc, John E Anthony, Do Y Yoon
Abstract: The phase-segregated structure and the electrical properties of thin film blends of the small-molecule semiconductor fluorinated 5,11-bis(triethylsilylethynyl) anthradithiophene with insulating binder polymers were studied for organic thin film trans ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906842

4. Neutron reflectivity characterization of the photoacid reaction-diffusion latent and developed images of molecular resists for extreme-ultraviolet lithography
Published: 5/11/2012
Authors: Vivek M Prabhu, Shuhui Kang, Wen-Li Wu, Sushil K Satija, Christopher K. Ober, Jing Sha, Peter V. Bonnesen
Abstract: Lithographic feature size requirements have approached a few radius of gyration of chemically-amplified photoresist polymers used in thin film patterning. Further, the feature dimensions are commensurate with the photoacid diffusion length that defin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908575

5. In situ electrochemical small-angle neutron scattering (eSANS) for quantitative structure and redox properties of nanoparticles
Published: 2/16/2012
Authors: Vivek M Prabhu, Vytautas Reipa
Abstract: Rapid growth in nanomaterial applications highlight limitations of available physicochemical characterization methods. An in situ electrochemical small-angle neutron scattering (eSANS) meth-odology was devised that enables direct measurements of nano ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909405

6. Characterization of the non-uniform reaction in chemically-amplified calix[4]resorcinarene molecular resist thin films
Published: 7/19/2011
Authors: Vivek M Prabhu, Shuhui Kang, Regis J Kline, Dean M DeLongchamp, Daniel A Fischer, Wen-Li Wu, Sushil K Satija, Jing Sha, Christopher K. Ober, Peter V. Bonnesen
Abstract: The ccc stereoisomer-purified tert-butoxycarbonyloxy (t-Boc) protected calix[4]resorcinarene molecular resists blended with photoacid generator exhibit a non-uniform photoacid catalyzed reaction in thin films. The surface displays a reduced reaction ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908683

7. Nanoelectronics Lithography
Published: 3/1/2011
Authors: Stephen Knight, Vivek M Prabhu, John H Burnett, James Alexander Liddle, Christopher L Soles, Alain C. Diebold
Abstract: This is a compiled chapter that will be included into the Handbook of Nanophysics.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901888

8. Zone-Refinement Effect in Small Molecule‹Polymer Blend Semiconductors for Organic Thin Film Transistors
Published: 12/14/2010
Authors: Yeon Sook Chung, Nayool Shin, Jihoon Kang, Youngeun Jo, Vivek M Prabhu, Regis J Kline, John E Anthony, Do Y Yoon
Abstract: The blend films of small molecule semiconductors with insulating polymers exhibit not only an excellent solution processability, but also superior performance characteristics (field-effect mobility, on/off ratio, threshold voltage and stability) over ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906520

9. Lateral Uniformity in Chemical Composition along a Buried Reaction Front in Polymers
Published: 11/15/2010
Authors: Kristopher Lavery, Vivek M Prabhu, Sushil K Satija, Wen-Li Wu
Abstract: Off-specular neutron reflectometry was applied to characterize the form and amplitude of lateral compositional variations at a buried reaction-diffusion front. In this work, off-specular neutron measurements were first calibrated using off-specular ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903570

10. Photoresist latent and developer images as probed by neutron reflectivity methods
Published: 9/16/2010
Authors: Vivek M Prabhu, Shuhui Kang, David Lloyd VanderHart, Eric K Lin, Wen-Li Wu
Abstract: Photoresist materials enable the fabrication of advanced integrated circuits with ever decreasing feature sizes. As next-generation light sources are developed, using extreme ultraviolet light of wavelength 13.5 nm, these highly-tuned formulations m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902742



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