A Novel Nanofabrication Technique Using Focused Ion Beam (FIB), Metal Organic Chemical Vapour Deposition (MOCVD)
Issue:
Volume 1, Issue 2, July 2013
Pages:
46-51
Received:
2 May 2013
Published:
10 July 2013
Abstract: The aim of this paper is to present a novel nano-manufacturing technique for the fabrication of nano-scale systems, such as mechanical machines and printed circuits etc. The proposed technique utilizes a guided focused ion beam (FIB) through a pattern to a substrate where it decomposes a metal organic gas to generate a reduced outline copy of the mask, yielding the required design system. The novelty of this technique is in the ability to fabricate nano-scale systems layer-by-layer rather than atom-by-atom through the adjustment of the vertical position of the fabricated part.To demonstrate the proposed technique, a simulation model was designed and tested. The simulation results have shown that a reduction in the perimeter of the fabricated part can be achieved easily by adjusting its vertical position with respect to the beam focused point by a 100 to 400 times. Further investigation revealed that the growth rate is a function of the precursor flux. For example, using a titanium precursor flux below the 2x1010 molecules/cm2.s then sputtering is more predominant, and above that value, a net deposition will occur at a growth rate of 5.3x10-05cm/s.
Abstract: The aim of this paper is to present a novel nano-manufacturing technique for the fabrication of nano-scale systems, such as mechanical machines and printed circuits etc. The proposed technique utilizes a guided focused ion beam (FIB) through a pattern to a substrate where it decomposes a metal organic gas to generate a reduced outline copy of the m...
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Synthesis of Carbon Nanoparticles from Kerosene and their Characterization by SEM/EDX, XRD and FTIR
Mohammad Abul Hossain,
Shahidul Islam
Issue:
Volume 1, Issue 2, July 2013
Pages:
52-56
Received:
10 June 2013
Published:
10 July 2013
Abstract: Carbon nanoparticles (CNPs) were synthesized by a simple way of incomplete combustion of kerosene. Synthesized nanoparticles were characterized by Scanning electron microscope (SEM), Energy dispersive x-ray (EDX), Powder x-ray diffractometry (XRD) and Fourier transform infrared spectroscopy (FTIR). The SEM particle sizes of prepared CNPs were found to be non-uniform. The average size of particles is in the range of 20-100 nm. EDX analysis predicts the presence of pure carbon without any contamination. X-ray powder diffractometric analysis of prepared CNPs indicates the presence of large amounts of amorphous carbon material in association with hexagonal graphite lattice. FTIR spectroscopic analysis shows that the prepared CNPs are a mixture of elemental carbon and a trace amount of hydrocarbons.
Abstract: Carbon nanoparticles (CNPs) were synthesized by a simple way of incomplete combustion of kerosene. Synthesized nanoparticles were characterized by Scanning electron microscope (SEM), Energy dispersive x-ray (EDX), Powder x-ray diffractometry (XRD) and Fourier transform infrared spectroscopy (FTIR). The SEM particle sizes of prepared CNPs were found...
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Development of Biogenic Silver Nano Particle from Pelargonium Graveolens Leaf Extract and their Antibacterial Activity
Manonmani Pandian,
Ramar Marimuthu,
Geetha Natesan,
Raskin Erusan Rajagopal,
Jerlin Sowmiya Justin,
Abdul Jaffar Ali Haja mohideen
Issue:
Volume 1, Issue 2, July 2013
Pages:
57-64
Received:
21 July 2013
Published:
10 August 2013
Abstract: Antibacterial activity of biogenic silver nanoparticles was evaluated by zone of inhibition using standard agar disc diffusion method. Among three different concentrations (25, 50 and 100 µl) 100 µl concentration showed maximum activity against Klebsiella pneumonia (2.7 cm), Shigella someneii (2.4 cm), S. flexaneri (2.4 cm), Pseudomonas aeruginosa (2.2 cm), P. mirabilis (2.1 cm) and E. coli (2.0 cm) when compared to the other two concentrations. It was also observed that it showed no activity against geranium plant extract that served as control.
Abstract: Antibacterial activity of biogenic silver nanoparticles was evaluated by zone of inhibition using standard agar disc diffusion method. Among three different concentrations (25, 50 and 100 µl) 100 µl concentration showed maximum activity against Klebsiella pneumonia (2.7 cm), Shigella someneii (2.4 cm), S. flexaneri (2.4 cm), Pseudomonas aeruginosa ...
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