Browsing Citations Only by Author "Heben, Michael"

Now showing items 1-17 of 17

    • Adsorption of hydrogen on carbon single-walled nanotubes as measured by the volumetric technique 

      Parilla, Philip; Dillon, Anne; Gennett, Thomas; Alleman, Jeffrey; Jones, Kim; Heben, Michael (Materials Research Society Proceedings: Symposium A: Nanotubes and Related Materials, 2000)
      We report on hydrogen adsorption onto carbon single-walled nanotube (SWNT) material as measured by the volumetric technique. This method determines the amount adsorbed by monitoring the pressure in a known volume at a known ...

    • Assessing the hydrogen adsorption capacity of single-wall carbon nanotube / metal composites 

      Heben, Michael; Dillon, Anne; Gilbert, Katherine; Parilla, Philip; Gennett, Thomas; Alleman, Jeffrey; Hornyak, Louis; Jones, Kim (American Institute of Physics Conference Proceedings: Hydrogen in Materials and Vacuum Systems, 2003-07-11)
      Carefully controlled and calibrated experiments indicate a maximum capacity for adsorption of hydrogen on SWNTs is ~8 wt% under room temperature and pressure conditions. Samples displaying this maximum value were prepared ...

    • Carbon nanotube anodes for lithium ion batteries 

      Raffaelle, Ryne; Gennett, Thomas; Maranchi, Jeff; Kumta, Prashant; Hepp, Aloysius; Heben, Michael; Dillon, Anne; Jones, Kim (Materials Research Society Proceedings Fall 2001: Making Functional Materials with Nanotubes, 2002)
      Highly purified single-wall carbon nanotubes (SWCNT) were investigated for use as an anode material for thin film lithium ion batteries. The high purity nanotubes were obtained through chemical refinement of soot generated ...

    • Development and characterization of single wall carbon nanotube–Nafion composite actuators 

      Landi, Brian; Raffaelle, Ryne; Heben, Michael; Alleman, Jeffrey; VanDerveer, William; Gennett, Thomas (Elsevier: Materials Science and Engineering B, 2005-02-15)
      The development and characterization of thin film polymeric actuators has been performed for single wall carbon nanotube (SWNT)–Nafion composite systems. Previous work in our laboratory illustrated that incorporation of ...

    • Effects of adsorbed O2, H2, CO2 and H2O on the optical properites of pure and polymer encapsulated single walled carbon nanotubes 

      Gennett, Thomas; Roe, Jo; VanDerveer, William; Fever, Adam; Landi, Brian; Raffaelle, Ryne; Alleman, Jeffrey; Dillon, Anne; Heben, Michael (American Physical Society: Annual APS March Meeting, 2002-03-18)
      We have measured the optical absorption spectra of single wall carbon nanotubes (SWCNTs) and SWCNT-polymer matrix samples at several temperatures and pressures. An in-situ cell was designed that allowed for heating of ...

    • Electrochemical transformation of SWNT/Nafion composites 

      Liu, Ping; Lee, Se-Hee; Yan, Yanfa; Gennett, Thomas; Landi, Brian; Dillon, Anne; Heben, Michael (The Electrochemical Society: Electrochemical and Solid State Letters, 2004-10-08)
      The electrochemical performance of single wall carbon nanotube (SWNT)/Nafion composite electrodes were studied in sulfuric acid solutions. Electrochemical oxidation of the highly dispersed SWNTs within the Nafion matrix ...

    • Evaluating the purity of single-wall nanotube materials 

      Dillon, Anne; Gennett, Thomas; Parilla, Philip; Alleman, Jeffrey; Jones, K.; Heben, Michael (Materials Research Society: 2000 Fall Proceedings Symposium A: Nanotubes and Related Materials, 2001)
      Carbon single-wall nanotubes (SWNTs) have a variety of unique physical, electronic and mechanical properties. However, the SWNTs must be thoroughly purified if they are to be used in the wide array of projected applications ...

    • Formation of single-wall carbon nanotube superbundles 

      Gennett, Thomas; Dillon, Anne; Alleman, Jeffrey; Jones, K.; Hasoon, F.; Heben, Michael (The American Chemical Society: Chemistry of Materials, 2000-03)
      Since their discovery in 1993, carbon single-wall nanotubes (SWNTs) have been of great interest because of their expected novel electronic, mechanical, and gas adsorption properties. Difficulties arise in measuring these ...

    • Fuel cell applications of nanotube-metal supported catalysts 

      Gennett, Thomas; Landi, Brian; Elich, J.; Jones, K.; Alleman, Jeffrey; Lamarre, P.; Morris, R.; Raffaelle, Ryne; Heben, Michael (Materials Research Society Proceedings Fall 2002: Materials for Fuel Cells and Fuel Processors, 2002-12-02)
      Novel carbon materials with nanometer dimensions are of potentially significant importance for a number of advanced technological applications. Within this report we describe the results for the electrochemical characterization ...

    • Investigation of the electronic structure of carbon single wall nanotube hybrid nanostructures 

      Engtrakul, Chaiwat; Davis, Mark; Gennett, Thomas; Dillon, Anne; Jones, Kim; Heben, Michael (Plasmonic Nano-imaging and Nanofabrication: Proceedings of the SPIE, 2005-08-03)
      The effects of protonation on the structure of the carbon single-walled nanotube (SWNT) polymer composites were studied by solid-state nuclear magnetic resonance (NMR) techniques and Raman spectroscopy. In addition, ...

    • Laser synthesis of single-wall carbon nanotubes utilizing high temperature induction heating. 

      Gennett, Thomas; Dillon, Anne; Alleman, Jeffrey; Jones, K.; Parilla, Philip; Heben, Michael (Materials Research Society Proceedings: Nanotubes and Related Materials, 2001)
      An inductive heating system was used to control the temperature of the target during laser synthesis of SWNTs. The position of the target relative to the heating coil, the type of catalyst metals and the synthesis temperatures ...

    • Protonation of carbon single-walled nanotubes studied using 13C and 1H-13C cross polarization nuclear magnetic resonance and raman spectroscopies 

      Engtrakul, Chaiwat; Davis, Mark; Gennett, Thomas; Dillon, Anne; Jones, Kim; Heben, Michael (The American Chemical Society: Journal of the American Chemical Society, 2005-12-14)
      The reversible protonation of carbon single-walled nanotubes (SWNTs) in sulfuric acid and Nafion was investigated using solid-state nuclear magnetic resonance (NMR) and Raman spectroscopies. Magic-angle spinning (MAS) was ...

    • Rapid, room temperature, high-density hydrogen adsorption on single-walled carbon nanotubes at atmospheric pressure assisted by a metal alloy 

      Heben, Michael; Dillon, Anne; Gennett, Thomas; Alleman, Jeffrey; Parilla, Philip; Jones, K.; Hornyak, G. (Materials Research Society 2000 Fall Meeting: Symposium A: Nanotubes and Related Materials, 2001)
      Laser-generated, carbon single-walled nanotubes (SWNTs) adsorb hydrogen in a matter of minutes at room temperature and atmospheric pressure in the presence of a Ti-6Al-4V metal alloy. The unusual hydrogen adsorption ...

    • A simple and complete purification of single-walled carbon nanotube materials 

      Dillon, Anne; Gennett, Thomas; Jones, K.; Alleman, Jeffrey; Parilla, Philip; Heben, Michael (Wiley: Advanced Materials, 1999-11)

    • Single wall carbon nanotube-Nafion composite actuators 

      Landi, Brian; Raffaelle, Ryne; Heben, Michael; Alleman, Jeffrey; VanDerveer, William; Gennett, Thomas (The American Chemical Society: Nano Letters, 2002-11)
      Single wall carbon nanotube (SWNT)-Nafion composite actuators have been demonstrated for 0.1-18% w/w doping of purified SWNTs within the polymer matrix. The high purity SWNTs, >95% w/w, were homogeneously dispersed into ...

    • Synthesis and characterization of boron-doped single-wall carbon nanotubes produced by the laser vaporization technique 

      Blackburn, Jeff; Yan, Yanfa; Engtrakul, Chaiwat; Parilla, Philip; Jones, Kim; Gennett, Thomas; Dillon, Anne; Heben, Michael (The American Chemical Society: Chemistry of Materials, 2006-05-16)
      We present the first successful high-yield laser vaporization synthesis of high-quality boron-doped single-wall carbon nanotubes (B-SWNTs). Boron was loaded into graphite targets in the form of elemental B as well as nickel ...

    • Systematic inclusion of defects in pure carbon single-wall nanotubes and their effect on the Raman D-band 

      Dillon, Anne; Parilla, Philip; Alleman, Jeffrey; Gennett, Thomas; Jones, K.; Heben, Michael (Elsevier: Chemical Physics Letters, 2005-01-11)
      The Raman D-band feature (∼1350 cm[-][1]) is examined with 2.54 eV excitation for pure bulk carbon single-wall nanotube samples before and after treatments that increase defect densities. Upon employing mass-transport-limited ...