Light enhancement back on track

Two-photon absorption enhancement observed in PbS quantum dots
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Fabrication of Pt/C Nanofiber Electrode for Fuel Cell Application

Product Description
Triethylamine catalyst was used to increase the molecular weight of poly(amic acid). In electrospinning, diameter of PAA nanofibers was controlled by molecular weight of poly(amic acid) and concentration of poly(amic acid)/N-N dimethylformamide solution. The diameters of polyimide based carbon nanofibers reached to a minimum value of around 100 nm. The conductivity of the carbon nanofiber papers increased with the decreasing of fiber diameters, while the mechanical strength of polyimide and carbon nanofiber paper was diameter independent. Further more, Pt was successfully impregnated in carbon nanofiber. Reduction accompanied with carbonization in Ar gas at up to 1000 degree C produced small and well-dispersed Pt nanoparticles (3-5 nm). Carbon dioxide treatment exhibited the effective ability of removal of carbonaceous overlayers to promise a potential enhancement Pt catalyst activity. The reduction rate of Pt ion is different at heating rate of 2 and 5 degree C/min. Thus, the heating rate and time at high temperature strongly affected Pt nanoparticle size.

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Tip Enhancement

Product Description
This book discusses the recent advances in the area of near-field Raman scattering, mainly focusing on tip-enhanced and surface-enhanced Raman scattering. Some of the key features covered here are the optical structuring and manipulations, single molecule sensitivity, analysis of single-walled carbon nanotubes, and analytic applications in chemistry, biology and material sciences. This book also discusses the plasmonic materials for better enhancement, and optical antennas. Further, near-field microscopy based on second harmonic generation is also discussed. Chapters have been written by some of the leading scientists in this field, who present some of their recent work in this field.

·Near-field Raman scattering
·Tip-enhanced Raman spectroscopy
·Surface-enhanced Raman spectroscopy
·Nano-photonics
·Nanoanalysis of Physical, chemical and biological materials beyond the diffraction limits
·Single molecule detection

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Towards a European Strategy for Nanotechnology: Legal and Other Relevant Implications on Europe’s Approach towards Regulation in Nanotechnology

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The enthusiasm of many industries towards the manifold opportunities associated with nanotechnology is reflected in the rapid increase in research funding. However, studies indicate that nanoparticles may cause adverse effects to human beings and the environment. Nanoparticles display completely new properties than their larger counterparts. Their size makes them highly mobile in both the human body and the environment. Is the current legal and administrative framework provided by the EU sufficient to cover the potential adverse effects? What are the weaknesses of the existing regulation? The author Sandra Grossalber provides the reader with information on nanomaterials and their applications in the industry and gives an overview of the EU¿s efforts in implementing a coherent strategy. Based on the discussion of possible adverse health, environmental and safety impacts she examines the administrative and legal framework and gives recommendations for adaptation. Providing an easily readable compilation of information, the author intends to contribute to the enhancement of public interest and comprehension of regulation activities.

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Enhancement of a conducting polymer-based biosensor using carbon

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This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
A biosensor with improved performance was developed through the immobilization of horseradish peroxidase (HRP) onto electropolymerized polyaniline (PANI) films doped with carbon nanotubes (CNTs). The effects of electropolymerization cycle and CNT concentration on the response of the biosensor toward H”2O”2 were investigated. It was found that the application of CNTs in the biosensor system could increase the amount and stability of the immobilized enzyme, and greatly enhanced the biosensor response. Compared with the biosensor without CNTs, the proposed biosensor exhibited enhanced stability and approximately eight-fold sensitivity. A linear range from 0.2 to 19@mM for the detection of H”2O”2 was observed for the proposed biosensor, with a detection limit of 68nM at a signal-to-noise ratio of 3 and a response time of less than 5s.

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