Papers – Page 70 – TechConnect Briefs

Hertz Elastic Contact in Spherical Nanoindentation Considering Infinitesimal Deformation of Indenter

Kang S.-K., Kim J-Y, Kim Y.-C., Lee Y-H, Kim J-Y, Kim Y.-C., Kwon D., Seoul National University, KR

Many studies have been performed to identify and analyze unusual nano-scale phenomena. Violation of Hertz elastic contact between the spherical nanoindenter and metallic materials has been discussed in previous studies. The unexpected results obtained using [...]

A facile block copolymer inclusion technique for large scale monodisperse hexagonal arrays of superparamagnetic iron oxides nanodots

Ghoshal T., Maity T., Godsell J.F., Roy S., Morris M.A., University College Cork, IE

We demonstrate a simple and cost-effective route, based around block copolymer patterning, to create dense arrays of highly ordered iron oxide nanodots at substrate surface. The methodology creates hexagonally arranged features via a process of [...]

Platinum Silicide probes: A novel approach to manufacture highly conductive AFM probes with small radii and high wear resistance

Krause O., Sebastian A., Despont M., Nanoworld Services, DE

Conventionally, conductive Atomic Force Microscopy (c-AFM) probes are either made by depositing a metal, an alloy or a doped diamond layer onto a ready-made AFM probe or, alternatively, by depositing one of those materials into [...]

Synthesis and characterization of carbon nanotubes by catalytic decomposition of acetylene with Fe/Co/MgO, Co/Zn/Al and (C5H7O2)3Mn/Al as catalysts

Dikio E.D., Vaal University of Technology, ZA

We report our studies on the effect of various catalysts in the synthesis of carbon nanomaterials. The as-prepared carbon nanomaterials were characterized by Raman spectroscopy, high resolution transmission electron microscopy and X-ray diffraction. The catalysts [...]

Characterizing Environmental Transformation of Multi-walled Carbon Nanotubes and Carbon Nano-Fiber Composites using Thermal Analysis and Related Hyphenated Techniques

Sahle-Demessie E., Zhao A., Salamon A.W., Cassel B., Gagliardi N.A., U.S. Environmental Protection Agency, US

Thermogravimetric analysis (TGA) coupled with gas chromatography and mass spectroscopy (TGA/GCMS), for the evolved gas analysis, has given insight to the stability and kinetics of structural changes and determining adsorbed organics to nanomaterials and nanocomposites. [...]

The effect of nanoparticles on the translucency and antimicrobial activities of experimental resin cements

Lim B.S., Ahn S.J., Park S.Y., Seoul National University, School of Dentistry, KR

The purpose of this study was to evaluate the effect of the nanoparticles in experimental resin cements on opacity (contrast ratio) and antibacterial activities. Experimental resin cements were prepared with three different kinds of fillers: [...]

Effect of γ-ray irradiated MWCNTs on electrical conductivity of a PET/graphite composites

Son Y., Kongju National University, KR

The effects of a compoundingmethod and γ-ray treatedmultiwall carbon nanotubes (MWCNTs) on the electrical conductivity of graphite/PET composites were investigated. We found that dispersion of MWCNTs in the PET phase plays a critical role in [...]

SC-15 Epoxy Reinforced with Magnetic Nanofillers under Uniform Magnetic Field – An Investigation of Anisotropic Physical Properties

Malkina O., Mahfuz H., Sorge K.D., Rondinone A.J., Chen J., Rangari V.K., Florida Atlantic University, US

SC-15 epoxy is used in many industrial applications. It is well known that the mechanical and viscoelastic properties of epoxy can be significantly enhanced when reinforced with nanofillers. In this work, SC-15 epoxy is reinforced [...]

The Study on Nanocellulose and Their Biocomposites

Lim D.-Y., Yoon M.-J., Yoon S.Y., Yoon M.-J., Yoon S.Y., Kim K-Y, Korea Institute of Industrial Technology, KR

Nanocelluloses with the average diameter below 100nm were successfully obtained by high shear fluid processor, microfluidizer. Their large surface area and the nano-scale dimensions can lead to the emerging materials for reinforcements in polymer composites, [...]

Far-infrared Radiation Properties of Poly(vinyl alcohol) Nanofibrous Membranes Containing Germanium and Silicon Dioxide

Chung J., Lee S., Yonsei University, KR

Far-infrared radiation effect and antibacterial properties were introduced in PVA nanofibrous membrane using germanium (Ge) and silicon dioxide (SiO2). Composite fibers containing Ge and SiO2 were fabricated at various concentrations of Ge and/or SiO2 using [...]