Online ISSN
1750-0443
Micro & Nano Letters
Volume 3, Issue 2, June 2008
Volumes & issues:
Volume 3, Issue 2
June 2008
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- Author(s): Y. Yang ; M.C. Gupta ; J.N. Zalameda ; W.P. Winfree
- Source: Micro & Nano Letters, Volume 3, Issue 2, p. 35 –40
- DOI: 10.1049/mnl:20070073
- Type: Article
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35
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The dispersion behaviour, thermal and electrical conductivities of carbon nanotube-polystyrene nanocomposites were investigated. The dispersion of carbon nanotubes (CNTs) in the nanocomposites was characterised by scanning electron microscope; it was observed that CNTs were homogeneously dispersed and embedded within the polystyrene matrix. The thermal conductivity of the nanocomposites were measured with a through transmission thermal inspection system at room temperature. The results showed that the thermal conductivity increased with an increase in CNT content, and the nanocomposite loaded 5 wt% CNTs exhibited a 120% enhancement in thermal conductivity. The correlation between the dispersion behaviour and thermal and electrical conductivities was discussed. In addition, it was demonstrated that CNT-polymer nanocomposites give larger increases in thermal and electrical conductivities for the same loading of carbon nanofibres, graphite powders and silver nanoparticles. - Author(s): T.A. Hilder and J.M. Hill
- Source: Micro & Nano Letters, Volume 3, Issue 2, p. 41 –49
- DOI: 10.1049/mnl:20080008
- Type: Article
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41
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Understanding the encapsulation and expulsion of drug molecules from nanocarriers is vital for the development of nanoscale drug delivery. In a previous paper, the authors investigate the acceptance and suction behaviour of the anticancer drug cisplatin entering a carbon nanotube. The previous work presented by the authors is extended and the encapsulation of two further anticancer drugs that have far more complicated molecular structures, namely paclitaxel and doxorubicin is investigated. Since these complicated molecular structures may enter the tube at any orientation, the results obtained for both drug molecules are represented in the form of the probability of encapsulation. The numerical data obtained displays an apparent periodicity and can be very accurately approximated by the first few terms of a Fourier series. Thus, a more sophisticated approach than previously detailed, which is applicable to far more complicated drug molecules is presented. The highest probability of achieving both encapsulation and maximum uptake (or suction energy) for paclitaxel occurs in the radii range 9.134<a<12.683 Å, while for doxorubicin this occurs in the range 8.855<a<10.511 Å. In addition, specific data is included for each orientation which might be useful in future experimental and molecular dynamics studies by medical scientists. - Author(s): Z. Shi ; S. Wu ; C. Fairbridge ; J.A. Szpunar
- Source: Micro & Nano Letters, Volume 3, Issue 2, p. 50 –56
- DOI: 10.1049/mnl:20070064
- Type: Article
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50
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An inexpensive electroless deposition technique has been used to build highly-ordered palladium nanowires on a porous stainless steel surface. The nanowire formation starts by aligning palladium nanoparticles in one direction, linking the nanoparticles so they become a nanowire bead by bead, ultimately forming a uniform wire. The diameter of the palladium nanowire can be controlled by the concentration of PdCl2 in the plating bath. The experimental results reported here are promising for developing desired palladium nanowires in potential engineering applications. - Author(s): M. Bonato ; G.C. Allen ; T.B. Scott
- Source: Micro & Nano Letters, Volume 3, Issue 2, p. 57 –61
- DOI: 10.1049/mnl:20080007
- Type: Article
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p.
57
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Titanium dioxide nanotubes were investigated as an adsorbent for the uranyl ion from solution under UV irradiation. Results from X-ray photoelectron spectroscopy analysis clearly indicate the reduction of U(VI) to U(IV) on the oxide surface. - Author(s): P. Lundahl ; R. Stokes ; E. Smith ; R. Martin ; D. Graham
- Source: Micro & Nano Letters, Volume 3, Issue 2, p. 62 –65
- DOI: 10.1049/mnl:20080003
- Type: Article
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62
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A method that enables reproducible synthesis of low aspect ratio, monodispersed and stable silver nanoparticle suspensions, uniform in its optical response and tunable over a range of diameters has been developed. The uniformity of the nanoparticles has been accurately determined using electron and atomic force microscopies for diameters down to 50 nm. These particles are highly suited to applications in optical nanotechnology.
Dispersion behaviour, thermal and electrical conductivities of carbon nanotube-polystyrene nanocomposites
Probability of encapsulation of paclitaxel and doxorubicin into carbon nanotubes
Controlling palladium nanowire size through electroless deposition process
Reduction of U(VI) to U(IV) on the surface of TiO2 anatase nanotubes
Synthesis and characterisation of monodispersed silver nanoparticles with controlled size ranges
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