Developments of catalytic CVD generation of single-walled carbon nanotubes (SWNTs) are reviewed with an emphasis on vertically aligned (VA) growth. Following the first realization of VA-SWNTs [1] by alcohol catalytic CVD (ACCVD) method, various techniques are reported for the vertical aligned growth such as control of water [2], point-arc microwave plasma CVD [3], molecular-beam CVD [4], hot-fi...

To analyze the local structure and/or chemical states of boron atoms in boron-doped diamond, which can be synthesized by the microwave plasma-assisted chemical vapor deposition method (CVD-B-diamond) and the temperature gradient method at high pressure and high temperature (HPT-B-diamond), we measured the soft X-ray emission spectra in the CK and BK regions of B-diamonds using synchrotron radia...

We have recently been able to grow single-walled carbon nanotubes by purely thermal chemical vapour deposition (CVD) at temperatures as low as 400 degrees C. This has been achieved by separating the catalyst pre-treatment step from the growth step. In the pre-treatment step, a thin film catalyst is re-arranged into a series of nano-droplets, which are then the active catalysts. Both steps have ...

There is interest to analyse newer biomarkers to identify healthy individuals at risk to develop cardiovascular disease (CVD) incidents and death. To determine in healthy individuals new circulating protein biomarkers, whose systemic levels may be associated with the risk of future development of CVD incidents and death. The study was performed in 82 individuals from the Malmö Diet and Cancer s...

Hydrocarbon precursor such as methane has been widely used to grow graphene films and the methods of growing quality graphene films are dominated by thermal CVD (chemical vapor deposition) system. Graphene films grown by plasma process are generally highly defective which in turns degrade the quality of the films. Here, using a green precursor, camphor we demonstrate a simple and economical met...

Plasma enhanced chemical vapor deposition (PECVD) is a versatile technique to obtain vertically densealigned carbon nanotubes (CNTs) at lower temperatures than chemical vapor deposition (CVD). In this work, we used magnetron sputtering to deposit iron layer as a catalyst on silicon wafers. After that, radio frequency (rf) assisted PECVD reactor was used to grow CNTs. They were treated with wate...

Measurements of species concentrations and temperature are performed in the boundary layer of an atmospheric DC plasma assisted chemical vapor deposition (CVD) system. Broadband ultraviolet absorption spectroscopy is employed to measure absolute number density of C2 and CH radicals. Stark broadening of Hβ emission is utilized to determine the electron number density inside the boundary layer. T...

A thick diamond film prepared by glow discharge plasma assisted chemical vapor deposition (CVD) was investigated by scanning electron microscopy, X-ray diffraction and Raman spectroscopy. The degeneration of the {111} faces into three {110} faces was found to be widespread. Both the {110} and {100} faces grow via a step mechanism, with the steps generally originating from the re-entrant corner ...