Alcántara Juan Carlos Castro, Cerda Zorrilla Mariana, Cabriales Lucia, Rossano Luis Manuel León, Hautefeuille Mathieu
Departamento de Física Facultad de Ciencias, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Circuito Exterior S/N, Delegación Coyoacán, C.P. 04510 Ciudad Universitaria, D.F. México, México.
Beilstein J Nanotechnol. 2015 Mar 16;6:744-8. doi: 10.3762/bjnano.6.76. eCollection 2015.
We present two simple alternative methods to form polymer-derived carbon nanodomains in a controlled fashion and at low cost, using custom-made chemical vapour deposition and selective laser ablation with a commercial CD-DVD platform. Both processes presented shiny and dark residual materials after the polymer combustion and according to micro-Raman spectroscopy of the domains, graphitic nanocrystals and carbon nanotubes have successfully been produced by the combustion of polydimethylsiloxane layers. The fabrication processes and characterization of the byproduct materials are reported. We demonstrate that CVD led to bulk production of graphitic nanocrystals and single-walled carbon nanotubes while direct laser ablation may be employed for the formation of localized fluorescent nanodots. In the latter case, graphitic nanodomains and multi-wall carbon nanotubes are left inside microchannels and preliminary results seem to indicate that laser ablation could offer a tuning control of the nature and optical properties of the nanodomains that are left inside micropatterns with on-demand geometries. These low-cost methods look particularly promising for the formation of carbon nanoresidues with controlled properties and in applications where high integration is desired.
我们展示了两种简单的替代方法，可通过定制化学气相沉积和利用商用CD - DVD平台进行选择性激光烧蚀，以可控方式且低成本地形成聚合物衍生的碳纳米域。在聚合物燃烧后，这两种工艺都呈现出光亮和深色的残留材料，并且根据这些域的显微拉曼光谱分析，聚二甲基硅氧烷层的燃烧成功产生了石墨纳米晶体和碳纳米管。本文报道了副产物材料的制备工艺和表征。我们证明化学气相沉积可大量生产石墨纳米晶体和单壁碳纳米管，而直接激光烧蚀可用于形成局部荧光纳米点。在后一种情况下，石墨纳米域和多壁碳纳米管留在微通道内，初步结果似乎表明激光烧蚀可为按需几何形状微图案内残留的纳米域的性质和光学特性提供调谐控制。这些低成本方法对于形成具有可控性质的碳纳米残留物以及在需要高集成度的应用中显得特别有前景。
