News Column

Studies from Shanghai University in the Area of Nanorods Described

January 31, 2014



By a News Reporter-Staff News Editor at Science Letter -- A new study on Nanorods is now available. According to news reporting from Shanghai, People's Republic of China, by NewsRx journalists, research stated, "When the distance between two silver nanoparticles is small enough, interparticle surface plasmon coupling has a great impact on their radiative properties. It is becoming a promising technique to use in the sensing and imaging."

The news correspondents obtained a quote from the research from Shanghai University, "A model based on finite difference time domain method is developed to investigate the effect of the assembled parameters on the radiative properties and the field-enhancement effect of silver nanorod dimer. The numerical results indicate that the radiative properties of silver nanorod dimer are very sensitive to the assembled angle and the polarization orientation of incident wave. There is great difference on the intensity and location of field-enhancement effect for the cases of different assembled angle and polarization. The most intensive field-enhancement effect occurs in the middle of two nanorods when two nanorods is assembled head to head and the polarization orientation parallels to the length axis of nanorods. Moreover, compared with the single nanorod, the wavelength of extinction peak of dimer has a red-shift, and the intensity of field-enhancement effect on the dimer is more intensive than that of single particle. With the increasing of particle length, extinction cross-section of silver nanorod dimer rises, while extinction efficiency and scattering efficiency firstly increase then drop down gradually."

According to the news reporters, the research concluded: "In addition, the extinction peaks of silver nanorod dimer on the substrate are smaller than that without the substrate, and their extinction peaks has a red-shift compared with that without the substrate."

For more information on this research see: Numerical investigation of radiative properties and surface plasmon resonance of silver nanorod dimers on a substrate. Journal of Quantitative Spectroscopy & Radiative Transfer, 2014;132():28-35. Journal of Quantitative Spectroscopy & Radiative Transfer can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Journal of Quantitative Spectroscopy & Radiative Transfer - www.elsevier.com/wps/product/cws_home/272)

Our news journalists report that additional information may be obtained by contacting W. An, Shanghai Univ Elect Power, Sch Energy & Environm Engn, Shanghai, People's Republic of China. Additional authors for this research include T. Zhu and Q.Z. Zhu (see also Nanorods).

Keywords for this news article include: Asia, Shanghai, Nanotechnology, Emerging Technologies, People's Republic of China

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Source: Science Letter


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