Grain boundary fine structure of ultrananocrystalline diamond thin films measured by Raman scattering

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Abstract

Structural units of the grain boundaries in ultrananocrystalline diamond thin films with different grain sizes were investigated using Raman spectroscopy. Characteristic peaks of well-defined molecular structural building blocks were detected in the near-infrared excited Raman spectra of these materials by limiting the excitation volume to the size of the crystallites using an optical microscope and surface enhanced Raman spectroscopy. The analysis of the spectra provides evidence for the presence of aromatic hydrocarbons and different s p3 C Hx groups in grain boundaries of these materials.

Original languageEnglish
Article number031913
JournalApplied Physics Letters
Volume91
Issue number3
DOIs
Publication statusPublished - 2007

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grain boundaries
Raman spectroscopy
fine structure
diamonds
Raman spectra
thin films
optical microscopes
crystallites
hydrocarbons
grain size
excitation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

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title = "Grain boundary fine structure of ultrananocrystalline diamond thin films measured by Raman scattering",
abstract = "Structural units of the grain boundaries in ultrananocrystalline diamond thin films with different grain sizes were investigated using Raman spectroscopy. Characteristic peaks of well-defined molecular structural building blocks were detected in the near-infrared excited Raman spectra of these materials by limiting the excitation volume to the size of the crystallites using an optical microscope and surface enhanced Raman spectroscopy. The analysis of the spectra provides evidence for the presence of aromatic hydrocarbons and different s p3 C Hx groups in grain boundaries of these materials.",
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AB - Structural units of the grain boundaries in ultrananocrystalline diamond thin films with different grain sizes were investigated using Raman spectroscopy. Characteristic peaks of well-defined molecular structural building blocks were detected in the near-infrared excited Raman spectra of these materials by limiting the excitation volume to the size of the crystallites using an optical microscope and surface enhanced Raman spectroscopy. The analysis of the spectra provides evidence for the presence of aromatic hydrocarbons and different s p3 C Hx groups in grain boundaries of these materials.

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