Note: Detecting flow velocity with high purity semiconducting single-walled carbon nanotubes

Lee, Seungho; Jung, Wonsuk; Woo, Ju Yeon; Kim, Soohyun; Han, Chang-Soo
March 2013
Review of Scientific Instruments;Mar2013, Vol. 84 Issue 3, p036110
Academic Journal
We report the measurement of fluid velocity on a semiconducting single-walled carbon nanotubes film in a microfluidic channel. To investigate the mechanism related to electrical signal change, we performed various experiments along with changing the flow velocity, the ion concentration and liquid viscosity, etc. Our result suggests that the sensing of flow velocity is a closely related to a pulsating asymmetrical thermal ratchet model. The electric signal change was strongly dependent on the electrode alignment, and the channel width of the sample. As the result, we achieved highly sensitive detection of the fluid, roughly 4 times greater than previous results.


Related Articles

  • High temperature electrical resistance of substrate-supported single walled carbon nanotubes. Avedisian, C. Thomas; Cavicchi, Richard E.; McEuen, Paul M.; Xinjian Zhou; Hurst, Wilbur S.; Hodges, Joseph T. // Applied Physics Letters;12/22/2008, Vol. 93 Issue 25, p252108 

    We report the electrical characteristics of substrate-supported metallic single walled carbon nanotubes at temperatures up to 573 K over a range of bias voltages (Vb) for zero gate voltage in air under atmospheric pressure. Our results show a monotonic increase in resistance with temperature,...

  • An ultrafast carbon nanotube terahertz polarisation modulator. Docherty, Callum J.; Stranks, Samuel D.; Habisreutinger, Severin N.; Joyce, Hannah J.; Herz, Laura M.; Nicholas, Robin J.; Johnston, Michael B. // Journal of Applied Physics;2014, Vol. 115 Issue 20, p203108-1 

    We demonstrate ultrafast modulation of terahertz radiation by unaligned optically pumped single-walled carbon nanotubes. Photoexcitation by an ultrafast optical pump pulse induces transient terahertz absorption in nanowires aligned parallel to the optical pump. By controlling the polarisation of...

  • Silver-nanoprism solution functions as an optical limiter.  // Laser Focus World;Sep2008, Vol. 44 Issue 9, p17 

    The article reports on the research conducted by the scientists at the National University of Singapore regarding the implication of silver-nanoprism solution in Singapore. They created an optical limiter based on silver nanoprisms that bests the performance of carbon nanotubes (CNT) and found...

  • First-principles study for transport properties of armchair carbon nanotubes with a double vacancy under strain. Li, Zi; Wang, Chong-Yu; Zhang, Xu; Ke, San-Huang; Yang, Weitao // Journal of Applied Physics;Jun2008, Vol. 103 Issue 11, p113714 

    Vacancies are one of the most important defects in carbon nanotubes (CNTs). Vacancies could affect the mechanical, chemical, and electronic properties of CNTs. In this study, we first use first-principles plane-wave calculation to optimize the structure of single-walled CNTs with a double...

  • A simulation study on the combined effects of nanotube shape and shear flow on the electrical percolation thresholds of carbon nanotube/polymer composites. Eken, A. E.; Tozzi, E. J.; Klingenberg, D. J.; Bauhofer, W. // Journal of Applied Physics;Apr2011, Vol. 109 Issue 8, p084342 

    Here we investigate the combined effects of carbon nanotube (CNT) properties such as aspect ratio, curvature, and tunneling length and shear rate on the microstructure and electrical conductivities of CNT/polymer composites using fiber-level simulations. Electrical conductivities are calculated...

  • Thermal stability and formation barrier of a high-energetic material N8 polymer nitrogen encapsulated in (5,5) carbon nanotube. Wei Ji; Timoshevskii, V.; Guo, H.; Abou-Rachid, Hakima; Lussier, Louis-Simon // Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p021904 

    We report the density functional theory total energy calculations of thermal stability and formation barrier of polymer nitrogen confined in carbon nanotubes (CNT). The analysis suggests that N8 polymer nitrogen encapsulated in (5,5) carbon nanotube [N8@CNT(5,5)] is thermally (meta)stable at a...

  • Synthesis and Optimization of MWCNTs on Co-Ni/MgO by Thermal CVD. Ryu, H.; Singh, B. K.; Bartwal, K. S. // Advances in Condensed Matter Physics;2008, p1 

    Multiwalled carbon nanotubes (MWCNTs) were prepared by the thermal chemical vapor deposition (CVD) technique. Monometallic and bimetallic Co and Ni combinations were used as a catalyst on MgO support. The mixer of H2/C2H2 was used as a carbon source. The prepared CNTs were found to possess...

  • Effects of initial compression stress on wave propagation in carbon nanotubes. Selim, M. M.; Abe, S.; Harigaya, K. // European Physical Journal B -- Condensed Matter;Jun2009, Vol. 69 Issue 4, p523 

    An analytical method to investigate wave propagation in single- and double- walled carbon nanotubes under initial compression stress is presented. The nanotube structures are treated within the multilayer thin shell approximation with the elastic properties taken to be those of the graphene...

  • who discovered carbon nanotubes?  // New Zealand Science Teacher;2009, Issue 120, p4 

    The article focuses on the discovery of carbon nanotubes and their characterization. Accordingly, the amazing properties of carbon nanotubes were rapidly uncovered, in which some related to the strength of the aromatic layers. Nanotubes are considered the strongest material, which can make...


Read the Article


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

Try another library?
Sign out of this library

Other Topics