Personal profile
Research interests
The Fike Lab focuses on using isotopic signatures (primarily those of C, N, O, S) of aqueous, organic, and mineral phases to understand both modern and ancient microbial metabolic activity and global biogeochemical cycling. As such, my interests cover spatial (and temporal) scales ranging from globally averaged biologic productivity to cell-specific microbial metabolic activity. We make particular use of secondary ion mass spectrometry, using a Cameca 7f-GEO instrument in my lab that is capable of mapping elemental and isotopic compositions in microbial cells down to approximately 100 nm.
Available to Mentor:
- PhD Students
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Collaborations and top research areas from the last five years
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Carbonation and Sulfidation of Mg- and Ni-Containing Solutions: Implications for Carbon Mineralization and Critical Element Recovery
Wang, Y., Alexakos, C., Zaidman, T. J., Houghton, J., Xie, Z., Fike, D. A. & Jun, Y. S., May 8 2025, In: Journal of Physical Chemistry C. 129, 18, p. 8570-8581 12 p.Research output: Contribution to journal › Article › peer-review
1 Link opens in a new tab Scopus citations -
In situ measurement of sulfur isotope ratios in sulfide samples with LA-ICP-MS/MS using N2O and He reaction gas
Eensoo, E., Paiste, P., Paiste, K., Fike, D. A. & Houghton, J. L., Jul 30 2025, In: Journal of Analytical Atomic Spectrometry. 40, 8, p. 2126-2137 12 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Selectivity of tris complexation for Ni(II), Co(II), and Fe(II) and its effect on carbonate precipitation under alkaline conditions
Houghton, J. L., Haywood, J. M., Wang, Y., Jun, Y. S. & Fike, D. A., Oct 2025, In: Applied Geochemistry. 191, 106512.Research output: Contribution to journal › Article › peer-review
Open Access -
A Machine-Learning Approach to Biosignature Exploration on Early Earth and Mars Using Sulfur Isotope and Trace Element Data in Pyrite
Figueroa, M. C., Gregory, D. D., Williford, K. H., Fike, D. J. & Lyons, T. W., Nov 1 2024, In: Astrobiology. 24, 11, p. 1110-1127 18 p.Research output: Contribution to journal › Article › peer-review
5 Link opens in a new tab Scopus citations -
Decoding paleomire conditions of paleogene superhigh-organic-sulfur coals
Adsul, T., O'Beirne, M. D., Fike, D. A., Ghosh, S., Werne, J. P., Gilhooly, W. P., Hackley, P. C., Hatcherian, J. J., Philip, B., Hazra, B., Bhattacharyya, S., Konar, R. & Varma, A. K., Aug 6 2024, In: International Journal of Coal Geology. 290, 104559.Research output: Contribution to journal › Article › peer-review
Open Access9 Link opens in a new tab Scopus citations