Target Audience
Anyone interested in Raman spectroscopy and silicate glasses or glass-ceramics.
- General practitioners who may or may not already use Raman spectroscopy in their work.
- Anyone new to Raman spectroscopy, glass- ceramics, and/or glass/liquid structure.
- Anyone with an interest in oxide glasses
The workshop consists of 4 segments:
- Who, what, when, where, and why Raman spectroscopy? A brief history, basic principles, and advantages and disadvantages. This section will cover how an experiment is actually done and what are the key things to consider. Phase identification (fingerprinting) is by far the #1 application of Raman spectroscopy and so will be highlighted as it is very straightforward.
- One of the main applications of Raman spectroscopy to glasses focuses on network connectivity or polymerization. to understand this important application the definition of glass, an intro to its structure, and how we can extract information from the Raman spectra will be discussed. Quantifying the network connectivity is done routinely but it is far from straightforward. This section will cover the current controversies in glass/liquid structure and show how Raman aids in these debates.
- Building on glass versus glass-ceramic spectra. it will be identified and discuss how to quantify and report on glassy spectra with clarity. Examples of best (and worst) practices will be given to identify the strengths and weaknesses that researchers face when dealing with Raman spectra. The basis of this perspective is that the Raman spectra must be interpreted in a physically reasonable way & consistent with the data from other probes (e.g. NMR). But, what does physically reasonable mean?
- How is Raman actually applied and what other complementary methods and approaches strengthen its use? it will be finished by adding some examples of interesting applications of Raman spectroscopy to glass and glass-ceramics. This discussion will touch on aluminates, borates, germanates, and phosphates which are often mixed with silicates to produce industrially important materials.
Dr. Benjamin J A Moulton
Dr. Benjamin J A Moulton Is a Postdoctoral Fellow in the CeRTEV group at UFSCar in São Carlos, Brazil. Dr. Moulton has worked extensively with XANES and Raman spectroscopy on glasses and mineral silicate phases. In his Ph.D., he applied these techniques to investigate the high-pressure behavior of CaMgSi2O6-CaAI2Si2O8 glasses at the University of Toronto under Prof. Grant Henderson. Since then he has focused on high temperature and crystallization studies again using these techniques (as well as Brillouin, EXAFS, 29Sİ MAS NMR, and others) mainly in the BaO-SiO2 system. Interestingly this system contains phases with hetero-connected structures similar to that found in most silicate liquids and glasses. During this time he has also looked at REE- dopants, lead and lithium silicates, and some phosphates systems.
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