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Author: daniel fischer

Displaying records 21 to 30 of 209 records.
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21. Determination of the Electron Escape Depth for NEXAFS Spectroscopy
Published: 6/2/2009
Authors: Daniel A Fischer, K E Sohn, M D Dimitriou, Jan Genzer, C Hawker, E. J Kramer
Abstract: Depth profiling using near-edge X-ray absorption fine structure (NEXAFS) spectroscopy was used to determine the carbon atom density as a function of depth by analyzing the post-edge signal in NEXAFS spectra. We show that the common assumption in the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901683

22. Modification of PET surfaces with self-assembled monolayers of organosilane precursors
Published: 5/13/2009
Authors: Daniel A Fischer, Ali Ozcam, Kirill Effimenko, Cherno Jaye, Richard Spontak, Jan Genzer
Abstract: We report on a facile, robust and rapid method by which poly(ethylene terephthalate) (PET) surfaces can be chemically modified while avoiding chemical degradation. Specifically, we demonstrate that brief exposure of PET surfaces to ultraviolet/ozone ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901679

23. Near Edge X-Ray Absorption Fine Structure Spectroscopy Studies of Single-Crystalline V2O5 Nanowire Arrays
Published: 5/7/2009
Authors: Daniel A Fischer, J Velasquez, Cherno Jaye, S Banerjee
Abstract: Near edge X-ray absorption fine structure (NEXAFS) spectroscopy is used to precisely probe the alignment, uniformity in crystal growth direction, and electronic structure of single-crystalline V2O5 nanowire arrays prepared by a cobalt-catalyzed vapor ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902379

24. Synthesis, Structural Characterization, and Electronic Structure of Single-Crystalline CuxV2O5 Nanowires
Published: 4/6/2009
Authors: Daniel A Fischer, C Patridge, Cherno Jaye, H Zhang, Amy Marschilok, E Takeuchi, S Banerjee
Abstract: Single-crystalline copper vanadium oxide nanowires β'-CuxV2O5 (x ~ 0.60) have been synthesized by the hydrothermal reduction of bulk CuV2O6 using small-molecule aliphatic alcohols as reducing agents. The prepared copper vanadium bronze nanow ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901684

25. Elastic and adhesive properties of alkanethiol self-assembled monolayers on gold
Published: 3/30/2009
Authors: Frank W DelRio, Cherno Jaye, Daniel A Fischer, Robert Francis Cook
Abstract: Elastic and adhesive properties of alkanethiol (CH3(CH2)n 1SH) self-assembled monolayers on gold are investigated by atomic force microscopy and correlated with surface structure via near edge x-ray absorption fine structure spectroscopy. As the cha ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901545

26. Semiconducting Thienothiophene Copolymers: Design, Synthesis, Morphology and Performance in Thin Film Organic Transistors
Published: 3/1/2009
Authors: Iain McCulloch, Martin Heeney, Michael L. Chabinyc, Dean M DeLongchamp, Regis J Kline, Michael Colle, Warren Duffy, Daniel A Fischer, David J Gundlach, Behrang H Hamadani, Rick Hamilton, Lee J Richter, Alberto Salleo, Martin Shkunov, David Sparrowe, Steve Tierney, Weimin Zhang
Abstract: Organic semiconductors are emerging as a viable alternative to amorphous silicon in a range of thin film transistor devices. , With the possibility to formulate these p-type materials as inks and subsequently print into patterned devices, organic bas ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854123

27. The molecular basis of mesophase ordering in a thiophene-based copolymer
Published: 2/18/2009
Authors: Dean M DeLongchamp, Regis J Kline, Youngsuk Jung, Eric K Lin, Daniel A Fischer, David J Gundlach, Andrew Moad, Lee J Richter, Michael F. Toney, Martin Heeney, Iain McCulloch
Abstract: The carrier mobility of poly(2,5-bis(3-alkylthiophen-2-yl) thieno[3,2-b]thiophene) semiconductors can be substantially enhanced after heating through a thermotropic mesophase transition, which causes a significant improvement in thin film structural ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852781

28. Surface Engineering of Styrene/PEGylated-Fluoroalkyl Styrene Block Copolymer Thin Films
Published: 1/1/2009
Authors: Elisa Martinelli, Sara Menghetti, Giancarlo Galli, Antonella Glisenti, Sitaraman Krishnan, Marvin Y. Paik, Christopher K. Ober, Detlet-M Smilgies, Daniel A Fischer
Abstract: A series of diblock copolymers prepared from styrenic monomers was synthesized using ATRP. One block was derived from styrene while the second block was prepared from a styrene modified with an amphiphilic PEGylated-fluoroalkyl side chain. The surf ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854428

29. Electronic Structure and Chemistry of Iron-Based Metal Oxide Nanostructured Materials: A NEXAFS Investigation of BiFeO3, Bi2Fe4O9, a-Fe2O3, g-Fe2O3, and Fe/Fe3O4
Published: 11/6/2008
Authors: Tae-Jin Park, S Sambasivan, Daniel A Fischer, R Ramesh, J A Misewich, S S Wong
Abstract: We present a systematic and detailed Near Edge X-ray Absorption Fine Structure (NEXAFS) experimental investigation of the electronic structure and chemistry of iron-based metal oxide nanostructured (FeMONS) materials including BiFeO3, Bi2Fe4O9, a-Fe2 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853567

30. The effect of interfacial roughness on the thin film morphology and charge transport of high performance polythiphenes
Published: 9/1/2008
Authors: Yeon-Gil Jung, Regis J Kline, Daniel A Fischer, Eric K Lin, Martin Heeney, Iain McCulloch
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854398



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