TITLE

Amorphous boron carbon nitride as a pH sensor

AUTHOR(S)
Li, C. L.; Huang, B. R.; Chattopadhyay, S.; Chen, K. H.; Chen, L. C.
PUB. DATE
April 2004
SOURCE
Applied Physics Letters;4/5/2004, Vol. 84 Issue 14, p2676
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Amorphous boron carbon nitride (a-BCxNy) has been used as the sensing membrane in an extended gate field effect transistor for the measurement of pH of solutions. The a-BCxNy material was produced by dual gun magnetron sputtering and has been found to be a stable and sensitive pH sensor with sensitivities in the range of 40 mV/pH. The pH sensitivity, however, increased with increasing carbon content of the a-BCxNy sensing membrane and reached a maximum of 46 mV/pH for a carbon concentration of 47 at. %. The response times of these sensors are close to 6 s. The drain current, which is an indicator of the pH, remained stable (fluctuation of few microamperes) over a period of 10 min in the phosphate solution with varied pH, demonstrating a good stability of the sensing membrane. © 2004 American Institute of Physics.
ACCESSION #
12715430

 

Related Articles

  • Electronic and Optical Properties of Granular Amorphous Carbon Films. Varyukhin, V. N.; D'yachenko, T. A.; Okunev, V. D.; Pafomov, N. N.; Plekhov, A. L.; Shemchenko, E. I. // Technical Physics Letters;Mar2005, Vol. 31 Issue 3, p217 

    Amorphous carbon (a-C) films on glass substrates are obtained by magnetron sputtering of a graphite target in nitrogen. The temperature dependence of the electric conductivity (ln σ∼T1/2 at temperatures T < 280 K) of the films is typical of a granular structure. The results of...

  • Continuum modelling of spherical and spheroidal carbon onions. Baowan, D.; Thamwattana, N.; Hill, J. M. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Oct2007, Vol. 45 Issue 1, p117 

    Carbon nanostructures are of considerable interest owing to their unique mechanical and electronic properties. Experimentally, a wide variety of different shapes are obtained, including both spherical and spheroidal carbon onions. A spheroid is an ellipsoid with two major axes equal and the term...

  • The Simulation of Transformation of Graphite to Diamond under Conditions of Dynamic Compression in a Conic Target. Lomonosov, I. V.; Fortov, V. E.; Frolova, A. A.; Khishchenko, K. V.; Charakhch'yan, A. A.; Shurshalov, L. V. // High Temperature;Jul/Aug2003, Vol. 41 Issue 4, p447 

    Some results are given of numerical simulation of carbon loading in conic lead targets using aluminum impactors moving at a velocity of 4 km/s. Semiempirical wide-range equations of state for materials and a kinetic model of nonequlibrium transformation of graphite to diamond, calibrated against...

  • Effect of carbon addition on the glass-forming ability of mechanically alloyed Fe-based alloys. Sharma, Satyajeet; Suryanarayana, C. // Journal of Applied Physics;Jan2008, Vol. 103 Issue 1, p013504 

    The effect of carbon addition on the glass-forming ability (GFA) of mechanically alloyed Fe-based Fe42M28Zr10B20 (M=Ni, Al, or Ge) amorphous alloy systems was investigated. It was shown that when B was partially replaced by 10 at. % C in the Fe–Ni–Zr–B and...

  • Characteristics of the Semiconductor Resistive Carbon Monooxide Sensors in the Thermo-Cyclic Operation Mode. Gaman, V.; Sevast'yanov, Е.; Маksimova, N.; Sergeichenko, N.; Drobot, А. // Russian Physics Journal;Jul2014, Vol. 57 Issue 3, p334 

    The results of studies of time dependence of conductivity of carbon monooxide sensors based on thin polycrystalline films of tin dioxide in a thermo-cyclic operation mode are presented. Expressions describing the dependences of the sensor response and sensitivity on the CO concentration in gas...

  • A starting device for a metal plasma source. Grigor'ev, A. N.; Turchina, A. K. // Instruments & Experimental Techniques;Jan2008, Vol. 51 Issue 1, p135 

    An explosion of a thin self-renewable carbon film is used for initiating an arc in a vacuum-arc metal plasma source, which makes operation of the device independent of the operating mode of the plasma source and allows the circuit of the setup to be simplified, since there is no need for...

  • Ab initio study of small graphitic cones with triangle, square, and pentagon apex. Compernolle, Steven; Kiran, B.; Chibotaru, L. F.; Nguyen, M. T.; Ceulemans, Arnout // Journal of Chemical Physics;8/1/2004, Vol. 121 Issue 5, p2326 

    Accurate geometries of carbon nanocones of different sizes with a triangle, square or pentagon at the apex have been determined for the first time using a quantum chemical optimization method. The structure close to the apex is distorted from an ideal conical surface. The charging effect of the...

  • Energy of the C = C Double Bond. Batsanov, S. S.; Kozhevina, L. I. // Russian Journal of General Chemistry;Feb2004, Vol. 74 Issue 2, p314 

    Determination of the π bond energy as the difference between the experimental energy of the double bond and standard value of the C-C bond energy does not take into account changes in the energy of the C-C bond as it becomes shorter. The change in the single bond energy upon its shortening...

  • Geometry and electronic properties of single vacancies in achiral carbon nanotubes. Wang, C.; Wang, C. Y. // European Physical Journal B -- Condensed Matter;Nov2006, Vol. 54 Issue 2, p243 

    An ideal single vacancy can be formed by removing one carbon atom from a hexagonal network. The vacancy is one of the most important defect structures in carbon nanotubes (CNTs). Vacancies can affect the mechanical, chemical, and electronic properties of CNTs. We have systematically investigated...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics