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Author: lee richter

Displaying records 31 to 40 of 87 records.
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31. Distinguishing Between Nonlinear Channel Transport and Contact Effects in Organic FETs
Published: 8/30/2007
Authors: Behrang H Hamadani, Jeremy LeBoeuf, R J Kline, Iain McCulloch, Martin Heeney, Curt A Richter, Lee J Richter, David J Gundlach
Abstract: We investigate charge injection and transport in organic field-effect transistors fabricated by using poly(2,5-bis(3-tetradecylthiophene-2-yl)thieno[3,2-b]thiophene) (pBTTT-C14) as the active polymer layer. We show that in high mobility devices where ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32741

32. Origin of differing reactivities of aliphatic chains on H-Si(111) and oxide surfaces with metal
Published: 6/5/2007
Authors: Christina Ann Hacker, Curt A Richter, Nadine Emily Gergel-Hackett, Lee J Richter
Abstract: The interaction of deposited metals with monolayer films is critical to the understanding of, and ultimate utility of, the emerging arena of molecular electronics. We present the results of a thorough study of the interaction of vapor deposited Au an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32527

33. High Carrier Mobility Polythiophene Thin Films: Structure Determination by Experiment and Theory
Published: 3/19/2007
Authors: Dean M DeLongchamp, Regis J Kline, Eric K Lin, Daniel A Fischer, Lee J Richter, Leah A. Lucas, Martin Heeney, Iain McCulloch, John E Northrup
Abstract: We exploit the unprecedented crystallinity of poly(2,5-bis(3-alkylthiophene-2-yl)thieno[3,2-b]thiophenes) (pBTTTs) high performance semiconducting polymers to study structural detail within 25 nm thick films of a pBTTT with tetradecyl side chains (p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852643

34. Ordering in Poly (3-alkylthiophene) Thin Films Determined with Polarized Optical Spectroscopies
Published: 3/16/2007
Authors: M C. Gurau, Dean M DeLongchamp, Brandon M. Vogel, Eric K Lin, Daniel A Fischer, S Sambasivan, Lee J Richter
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854217

35. Characterization and Control of Lipid Layer Fluidity in Hybrid Bilayer Membranes
Published: 1/31/2007
Authors: Neil A. Anderson, Lee J Richter, John C. Stephenson, Kimberly A Briggman
Abstract: The main gel-to-liquid-crystal (LC) phase transition temperature, Tm, of the distal lipid layer in hybrid bilayer membranes (HBMs) under water was investigated using vibrational sum frequency spectroscopy (VSFS). VSFS has unique sensitivity to order ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100963

36. Measuring Molecular Order in Poly(3-alkylthiophene) Thin Films with Polarizing Spectroscopies
Published: 1/16/2007
Authors: Marc Gurau, Dean M DeLongchamp, Brandon M. Vogel, Eric K Lin, Daniel A Fischer, S Sambasivan, Lee J Richter
Abstract: We measured the molecular order of poly(3-alkylthiophene) chains in thin films before and after melting through the combination of several polarized photon spectroscopies: infrared (IR) absorption, variable angle spectroscopic ellipsometry (SE), and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854060

37. Optical Anisotropy of Semiconducting Single-Wall Carbon Nanotubes
Published: 1/1/2007
Authors: Jeffrey A Fagan, Erik K. Hobbie, Jeffrey Ray Simpson, Lee J Richter, Idan Mandelbaum, Vardhan Bajpai, Derek L. Ho, Barry J. Bauer, Angela HightWalker, Ryan Raffaelle
Abstract: We measure the full optical anisotropy of individual semiconducting single-wall carbon nanotubes (SWNTs). Dispersion of aligned SWNTs in stretched polymer films is confirmed with small-angle scattering and near-infrared fluorescence spectroscopy. By ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852677

38. Determination of Lipid Phase Transition Temperatures in Hybrid Bilayer Membranes
Published: 9/9/2006
Authors: Neil A. Anderson, Lee J Richter, John C. Stephenson, Kimberly A Briggman
Abstract: The main gel to liquid crystal (LC) phase transition temperature, Tm, of the lipid monolayers in hybrid bilayer membranes (HBMs) was investigated using vibrational sum frequency spectroscopy (VSFS). The unique sensitivity of VSFS to probe order/diso ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841012

39. Broadband coherent anti-strokes Raman spectroscopy characterization of polymer thin films
Published: 8/2/2006
Authors: Lee J Richter, M C. Gurau, Zachary Schultz
Abstract: Broadband coherent anti-Stokes Raman spectroscopy (CARS) is demonstrated as an effective probe of the polymer thin film materials. A simple modification to a commercially available 1 kHz SFG spectrometer permits acquisition of CARS spectra for polym ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902172

40. Competitive Adsorption of PEG, CI^u-^, and SPS/MPS on Cu: An In Situ Ellipsometric Study
Published: 8/1/2006
Authors: Marlon L Walker, Lee J Richter, Thomas P Moffat
Abstract: The adsorption of Cu electrodeposition accelerating agents SPS and MPS on evaporated Cu thin films was examined in-situ using spectroscopic ellipsometry under quiescent conditions. Both the thiol (MPS) and disulfide (SPS) resulted in definitive chan ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831400



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