© Manuel Kunz
Prof. Dr. habil. Thorsten Geisler-Wierwille
Chair holder
Chair holder
Affiliations
Research topics
- Raman spectroscopy in Material Sciences, Geosciences, and Archeaology
- Solid-water reactions (radiation damaged materials, silicate glasses, bones, rocks)
- High-temperature solid-solid and solid-melt reactions in ceramics U-Th-Pb geochronology (electron microprobe and LA-ICPMS dating)
- Radiation damage in minerals
- Physics and chemistry of solid solutions
Third-party funding (2011 – 2023): ~ 3.4 Mill. €
Selection of finshed projects:
Real-time imaging of high-temperature sintering and associated oxygen isotope exchange reactions by confocal hyperspectral Raman spectroscopy (DFG: 207,300 €)
Development and application of space- and time-resolved hyperspectral Raman imaging for in situ investigation of mineral and glass-water reactions (DFG: 207,200 €)
Experimental and natural corrosion of borosilicate glasses (BMBF: 284,149 €)
Model development to describe the aqueous corrosion of silicate glasses using spatially and time-resolved in-situ Raman spectroscopy (Otto-Schott Font: 170,000 €)
Two confocal Raman spectrometers (DFG: 733,00 €)
Selected publications
- Kral A.G., Lagos M., Guagliardo P., Tütken T., and Geisler T. (2022) Rapid alteration of cortical bone in fresh- and seawater solutions visualized and quantified from the millimeter down to the atomic scale. Chemical Geology., 609: 121060
- Böhme N., Hauke K., Dohrn M., Neuroth M., and Geisler T. (2022) High-temperature phase transformations of hydroxlyapatite and the formation of silicocarnotite in the hydroxylapatite-quartz-lime system studied in situ and in operando by Raman spectroscopy. Journal of Materials Research, 57, 15239–15266.
- Neumann J.T., Black J., Smith B., Hœrlé S., Watkins R., Lagos M., Ziegler A., and Geisler T. (2022) Artificial weathering of rock types bearing petroglyphs from Murujuga, Western Australia. Heritage Sciences, 10: 77.
- Geisler T., Dohmen L., Lenting C., and Fritzsche M.B.K. (2019) Real−time in situ observations of reaction and transport phenomena during silicate glass corrosion by fluid-cell Raman spectroscopy. Nature. Materials, 18, 342−348.
- Hauke K., Kehren J., Böhme N., Zimmer S., and Geisler T. (2019) In situ hyperspectral Raman imaging: A new method to investigate sintering processes of ceramic material at high-temperature. Applied Science, 9: 1310.
- Geisler T., Popa K., and Konings R.J.M. (2016) Evidence for lattice strain and non-ideal behavior in the (La1−xEux)PO4 solid solution from X-ray diffraction and vibrational spectroscopy. Frontiers in Earth Sciences, 4: 64.
- Pöml P., Geisler T., Heimink J., Cobos-Sabate J., Wiss T., Raison P.E., Schmid-Beurmann P., Golla−Schindler U., Deschanels X., and Putnis A. (2011) The mechanism of the hydrothermal alteration of Cerium- and Plutonium-doped zirconolite. Journal of Nuclear Materials., 410, 10−23.
- Geisler T., Schaltegger U., and Tomaschek F. (2007) Re-equilibration of zircon in aqueous fluids and melts. Elements, 3, 45−51.
© Manuel Kunz
Prof. Dr. habil. Thorsten Geisler-Wierwille
Chair holder
Chair holder
2.102
Meckenheimer Allee 169
53115 Bonn