کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1442836 | 1509450 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Optical advanced spectroscopic techniques for the study of nano-structured materials: Applications to carbon nanotubes Optical advanced spectroscopic techniques for the study of nano-structured materials: Applications to carbon nanotubes](/preview/png/1442836.png)
In this paper, we present the anti-Stokes Raman scattering as a technique allowing investigations of materials at a nanoscale level. When the energy of the excitation light coincides with the energy of an electronic transition, a strong anti-Stokes Raman spectrum with respect to the prediction of the Maxwell–Boltzman (MB) law is regularly observed. Under a tight-focusing of the excitation light, the anti-Stokes Raman emission is reminiscent of Coherent anti-Stokes Raman Scattering (CARS). It has been detected on carbon nanotubes (CNTs), prototypes of nanometric materials, as well as on other compounds such as copper phthalocyanine (CuPc), poly(bithiophene) (PBTh), poly(3,4-ethylene dioxythiophene) (PEDOT), polyparaphenylene vinylene (PPV) layered as thin films on a metallic support in which are generated surface plasmons. We demonstrate that nanostructures by themselves can be of importance by generating non-linear phenomena that can be exploited for studying such materials and in particular carbon nanotubes.
Journal: Synthetic Metals - Volume 159, Issues 21–22, November 2009, Pages 2173–2176