Dr. Jasmina Wiemann
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jwiemann.bsky.social
Dr. Jasmina Wiemann
@jwiemann.bsky.social
Molecular Geo-, Astro-, & Paleobiologist | Asst. Professor at Johns Hopkins University & JHMI | PI of the PaLEO Lab | Proudly #interdisciplinary 🧬🧪
For folks interested in interdisciplinary PhD or postdoc opportunities - catch me on Sunday or Monday, I look forward to meeting you!

This talk touches only on one out of many topical foci in my lab at Hopkins - curious? Here's our lab homepage:
www.jasminawiemann.com
Jasmina Wiemann's PaLEO Lab | JHU
Lab homepage for Jasmina Wiemann's PaLEO Lab (Molecular Geo-, Astro-, Paleobiology) at Johns Hopkins University.
www.jasminawiemann.com
October 17, 2025 at 8:27 PM
Many thanks, Matt!
October 15, 2025 at 2:00 PM
This preservational bias held up when we analyzed a large fossil sample via #Raman spectroscopy [note the *beautiful* CH2-scissoring diagnostic for cholestane in raw spectra and the 2-D spectral correlation plot!]. Check out the spectacular ToF SIMS maps for direct comparisons!
September 19, 2025 at 2:42 PM
#Biomarkers do not preserve uniformly well across the diverse diagenetic minerals found in #fossils - cholestane, one of the most widely used informative biomarker preserves exceptionally well in diagenetic carbonates rather than phosphates.
September 19, 2025 at 2:42 PM
If you're around, check out our fancy new data, and learn more about how we use our state-of-the-art AFM-Raman platform to rethink #biosignatures here at Hopkins!

Let's chat about how our methods could help answer your evolutionary questions! [2/2]
August 19, 2025 at 10:18 PM
Here starts our odyssey to illuminate the fingerprint, origin(s), evolution, and evolvability of Life on Earth and elsewhere in the Universe ... one photon at a time!
August 13, 2025 at 3:24 PM