Multi wall carbon nanotubes (MWCNTs) doped polypyrrole DNA biosensor for label free detection of genetically modified organisms by QCM and EIS

... respectively. 3.2. Label- free detection of CaMV 35S complementary target by QCM measurements The hybridization events with complementary and muted tar- gets were detected by QCM and EIS. QCM is known ... Film formation and morphology Normally, sensitivity and reproductibility of DNA sensors are determined by the surface chemistry of the recognition interface...

Ngày tải lên: 02/07/2014, 14:14

... Introduction The discovery of carbon nanotubes (CNTs) by Iijima in 1991 has attracted scientific and technological interest worldwide. Both multi- walled and single-walled carbon nanotubes (MWCNTs and SWCNTs) ... at 2Â =26 ◦ and two lower intensity peaks at 43.4 ◦ and 54.1 ◦ , all of which were attributed to the diffraction signature of the distance between the walls...

Ngày tải lên: 05/05/2014, 15:26

... nucleation and growth of carbon nanotubes and other carbon nanomorphologies. Carbon 2009, 47:659-669. 29. Yoshida H, Takeda S, Uchiyama T, Kohno H, Homma Y: Atomic-scale in-situ observation of carbon ... As it is seen from Figure 7a, both the few -wall and multi- wall carbon nanotubes of different diameters can be found. They usually have 3 to 10 walls and...

Ngày tải lên: 20/06/2014, 20:20

... Single carbon nanotube optical spectroscopy. ChemPhysChem 2005, 6:1-6. 16. Weisman RB: Optical spectroscopy of single-walled carbon nanotubes Department of Chemistry, Center for Nanoscale Science and Technology, ... glass matrices and multiwall car- bon nanotubes have been used to study coupling of the nanoparticles and their contribution to the longitudinal mode of th...

Ngày tải lên: 20/06/2014, 22:20

... disordered carbon [17, 18]. In addition to the D band, the D 0 band as a shoulder of the Fig. 2 Raman spectrum of CNTs before (a) and after (b) ALD of ZnO. Inset: Raman spectrum in the range of 150–650 ... Lett (2010) 5:1836–1840 123 NANO EXPRESS Atomic Layer Deposition of ZnO on Multi- walled Carbon Nanotubes and Its Use for Synthesis of CNT–ZnO Heterostructures X. L...

Ngày tải lên: 21/06/2014, 08:20

... disorder of CNTs, which originates from the defects including disordered materials, poor graphitization, functionalized carbon, and the amorphous carbon on the sidewall of nanotubes [28–30]. The G band ... in this case. Therefore, even with the addition of 20 vol.% H 2 (H 2 /O 2 of 10/40 (sccm/sccm)) in gas, there is still a significant removal of amorphous carbon and for...

Ngày tải lên: 22/06/2014, 01:20

... diffusion layer porous carbon paper which consists of a macroporous layer of carbon fiber paper (SGL, Germany) and a microporous layer of carbon black powder and a hydrophobic agent. The carbon black powder ... between the CNTs and the macroporous carbon paper. The graphitized carbon paper was prepared by deposition of a mixture of carbon black and poly-tetrafl...

Ngày tải lên: 22/06/2014, 18:20

... sheets, of which those formed by rolling up of single sheet are called single-walled c arbon nanotubes (SWCNTs) and those formed by rolling up of more than one sheets are called multi- walled CNTs (MWCNTs). ... functionalization of single -wall carbon nanotubes through C-N bond forming substitutions of fluoronanotubes-Patent. 2006, US2006171874. 45. Ford WE, Wessels...

Ngày tải lên: 20/06/2014, 22:20

... problem of choosing Q and b q with the utility function rewritten 7 The subscript n stands for normal, the subscript b stands for biological, and the subscript g stands for genetically modified ... See Table 1 and Table 2 for the units of measurement, baseline values of parameters, and for the pre-innovation solution. 11 of conventional food,  is the unit rental...

Ngày tải lên: 05/03/2014, 20:20