
Thilo BissbortLudwig-Maximilians-Universität in Munich | LMU · Section for Mineralogy, Petrology and Geochemistry
Thilo Bissbort
Dr. rer. nat.
About
18
Publications
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Introduction
I study diffusion in silicate glasses, melts, and minerals and the properties of glasses and melts. I developed new experimental procedures that make the low-temperature region in diffusion experiments accessible. This is achieved by combining techniques that originate from material science with ion beam analysis (NRRA & RBS) and numerical modeling. Investigations of glass transitions are performed by calorimetric analyses.
Additional affiliations
September 2022 - December 2022
February 2018 - June 2022
September 2015 - March 2017
Education
February 2018 - May 2022
October 2015 - December 2017
October 2012 - October 2015
Publications
Publications (18)
Base metal sulfides (Fe-Ni-Cu-S) are ubiquitous phases in mantle and subduction-related lithologies. Sulfides in the mantle often melt incongruently, which leads to the production of a Cu-Ni-rich sulfide melt and leaves a solid residue called mono-sulfide solid solution (mss). However, the persistence of crystalline sulfide phases like mss in the E...
Studying diffusion of hydrogen in nominally anhydrous minerals (NAMs), like clinopyroxene, at low temperatures is a challenging task due to experimental and analytical difficulties. In this study, to overcome these problems we have produced H concentration gradients in single crystals of natural diopsidic clinopyroxene by ion implantation and measu...
Implantation of ions in minerals by high energy radiation is an important process in planetary and materials sciences. For example, the solar wind is a multi-ion flux that progressively modifies the composition and structure of near-surface domains in solar objects, like asteroids. A bombardment of a target by different elements like hydrogen (H) a...
Diffusion of hydrogen (H) in silicate glasses plays a critical role in many applications because already at small concentrations the presence of H and its mobility have significant effects on the physical and chemical properties of materials. Although many of these applications such as weathering and alteration occur at low temperatures (e.g., < 60...
Amorphous calcium carbonate (ACC) is the least stable polymorph of calcium carbonates. It has been identified to play an important role in nature (e.g., biomineralization and speleothem formation), where it acts as a precursor for the transformation to more stable polymorphs such as calcite. Furthermore, the use of ACC in technical applications req...
Base‐metal sulfur liquids (mattes) play a crucial role as metasomatic agents and carriers of highly siderophile elements (HSE) within the Earth's mantle. Prior research has predominantly focused on sulfur‐poor metallic liquids involved in core formation scenarios. We conducted high‐pressure experiments using a multi‐anvil apparatus to investigate t...
Base metal sulfides (Fe-Ni-Cu-S) are ubiquitous phases in mantle and subduction-related lithologies. Sulfides in the mantle often melt incongruently, which leads to the production of a Cu-Ni-rich sulfide melt and a solid residue called monosulfide solid solution (mss). Even though peridotite-hosted sulfides, which tend to be more Ni-rich, are likel...
We report the first calorimetric observations of glass transition temperatures and crystallization rates of anhydrous, amorphous calcium-magnesium carbonate using fast scanning differential scanning calorimetry. Hydrous amorphous Ca0.95Mg0.05CO3 · 0.5H2O (ACMC) solid was precipitated from a MgCl2–NaHCO3 buffered solution, separated from the superna...
The solar wind is a multi-ion flux that progressively modifies the composition and structure of near-surface domains in atmosphere-less solar objects, like asteroids. A bombardment of the target by different elements like hydrogen (H) at various energies (keV to MeV) causes, among other things, the implantation of solar wind particles in crystallin...
Hydrogen in nominally anhydrous minerals (NAMs) is of significant interest due to its substantial impact on various properties even when present in trace amounts (e.g., melting and transport properties). Previous studies [1,2,3] investigated H diffusion in clinopyroxene at temperatures > 600 °C, but fast diffusion of hydrogen (compared to other ele...
I have written a MATLAB app that allows the calculation of silicate melt viscosity using the two popular models by Giordano et al. 2008 and Hui and Zhang 2007. It comes with a user-friendly GUI. You can download it from my GitHub - feel free to share
https://github.com/ThiloBissbort/ViscoCalc
ViscoCalc v1.0
This Matlab app allows the calculation...
Diffusion of hydrogen bearing species in glasses plays a significant role in numerous applications in commercial as well as scientific domains. The investigation of diffusion of water in glasses at low temperatures led to experimental and analytical difficulties in the past. We present a new approach that lets us overcome these complications. Diffu...
Questions
Question (1)
In order to relax the produced silicate glass I want to slowly cool it under the glass transition temperature (to prevent fissure formation but without crystallization). To do so I need information about the glass transition temperatures for "simple" silicate glass compositions or how to estimate those temperatures.
Thank you in advance!
Thilo