The authors are grateful to Tim Smith, Renishaw spectroscopy products division, England, for his assistance in measuring the UV Raman spectrum of our sample. This work was supported in part by the Gerhard M. J. Schmidt Minerva Center for Supramolecular Architecture.
Laser-Induced Direct Lithography for Patterning of Carbon with sp3 and sp2 Hybridization†
Article first published online: 30 APR 2003
© 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Functional Materials
Volume 13, Issue 5, pages 412–417, May, 2003
How to Cite
Zbaida, D., Popovitz-Biro, R., Lachish-Zalait, A., Klein, E., Wachtel, E., Prior, Y. and Elbaum, M. (2003), Laser-Induced Direct Lithography for Patterning of Carbon with sp3 and sp2 Hybridization. Adv. Funct. Mater., 13: 412–417. doi: 10.1002/adfm.200304318
- Issue published online: 30 APR 2003
- Article first published online: 30 APR 2003
- Manuscript Received: 23 DEC 2002
- Carbon, sp2-hybridized;
- Carbon, sp3-hybridized;
- Patterning, laser-induced
A new method of laser-induced lithography for direct writing of carbon on a glass surface is described, in which deposition occurs from a transparent precursor solution. At the glass–solution interface where the laser spot is focused, a micro-explosion process takes place, leading to the deposition of pure carbon on the glass surface. Transmission electron microscopy (TEM) analysis shows two distinct co-existing phases. The dominant one shows a mottled morphology with diffraction typical of cubic (sp3) diamond. The other region shows an ordered array of graphene sheets with diffraction pattern typical of sp2-bonded carbon. The sp3 crystallites range in size from 9 to 30 Å and are scattered randomly throughout the sample. A UV Raman spectrum shows a broad band at the location of the expected diamond peak, together with a peak corresponding to the graphite region. We conclude that the patterned carbon is composed of a mixture of nanocrystalline sp3 and sp2 carbon forms.