Spectroscopy App Note:
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November 2014  
Chemical Vapor Deposition Analysis of Graphene
Mark Wall, PhD, Thermo Fisher Scientific;  Robert M. Jacobberger, Department of Material Science and Engineering, University of Wisconsin; and Elena Polyakov, Graphene Laboratories
This note explores how Raman imaging is used to gain important insight with respect to critical parameters and mechanisms that govern the nucleation and growth of graphene via chemical vapor deposition (CVD).
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Graphene Protective Coating Capabilities Investigated with Raman Imaging
Mark Wall, PhD, Thermo Fisher Scientific; and Susmit Roy, Department of Materials Science and Engineering, University of Wisconsin
Graphene demonstrates exceptional barrier properties, attracting intense interest used as a protective layer in a variety of applications. This work investigates the capabilities of graphene using rapid Raman imaging.
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Visualizing Content Distribution in Tablets with Raman Imaging
Robert Heintz, PhD, Thermo Fisher Scientific
Raman imaging has the power to quickly visualize an expanded view of a tablet and provide a thorough analysis of component homogeneity and spatial distribution.
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Analysis of Low Dose Tablets and Polymorphs
Robert Heintz, PhD, Thermo Fisher Scientific
Using Raman imaging, this work evaluates the spatial distribution of active pharmaceutical ingredients in low dose tablets and includes the differentiation of polymorphs.
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An Exceptional View of Geological Materials with Raman Imaging
Robert Heintz, PhD, Thermo Fisher Scientific
Utilizing Raman imaging, this note explores identification of multiple components in a large sample area, differentiation of carbonate minerals, and how Raman imaging can be used for routine analyses.
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Raman Mapping of Mineral Inclusions in Diamonds and other Mineral Samples
Antony Burnham, PhD, School of Earth Sciences, University of Bristol, UK; and David James, Thermo Fisher Scientific
Mineral inclusions can be used to explain the evolution of a rock; because diamond is the hardest known material, polishing down and exposing inclusions is time-consuming and costly. Raman spectroscopy can identifiy inclusions while still encapsulated.
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Raman Analysis of Lithium-Ion Battery Components – Part I: Cathodes
Robert Heintz, PhD, Thermo Fisher Scientific
Raman spectroscopy was used to analyze the molecular structures of manganese spinels. Ordered spinel structures displayed lower electrical conductivity compared with normal spinel structure, emphasizing the importance of distinguishing between these phases.
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Raman Analysis of Lithium-Ion Battery Components – Part II: Anodes
Robert Heintz, PhD, Thermo Fisher Scientific
Carbon allotropes have been investigated for use as anode materials due to novel physical and chemical properties. Raman spectroscopy can be used to analyze the different allotropes and additional information on molecular structure.
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Raman Analysis of Lithium-Ion Battery Components – Part III: Electrolytes
Robert Heintz, PhD, Thermo Fisher Scientific
Raman spectroscopy can be used to determine the degree of association of electrolyte ions in solution, which directly affects battery performance.
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