Welcome on Florian Wiesner

Applied AI Scientist at Mistral

Sun, 07 Jun 2026 00:00:00 +0000

I’ve joined Mistral AI as an Applied AI Scientist & Research Engineer.

Formalized Proofs in Physics

Fri, 29 May 2026 00:00:00 +0000

Exploring formal methods in physics.

Towards a Physics Foundation Model

Sun, 24 May 2026 00:00:00 +0000

With this work, I wanted to explore whether the concept of foundation models (LLMs for language) can be applied to physics simulations. The idea is to train a single model on a large corpus of diverse simulation data, such that it can generalize to new physical systems without retraining. I also wrote a blog post explaining the work in more detail.

Enhancing Bubble Removal in Geometry-Optimized Electrodes

Fri, 15 May 2026 00:00:00 +0000

This work demonstrates that geometry-optimized 3D-printed lattice electrodes achieve better electrochemical performance than conventional stochastic foams in alkaline water electrolysis, despite having lower surface area. The key innovation is the Venturi-like entrainment mechanism that improves bubble evacuation through straight flow channels.

Physics Foundation Model Talk on Youtube

Thu, 05 Mar 2026 00:00:00 +0000

I gave a talk on physics foundation models for the StartUp First Principles, now available on YouTube.

Dissertation done!

Wed, 18 Feb 2026 00:00:00 +0000

I successfully defended my dissertation with highest honors, earning the title of “Dr.-Ing.” or PhD.

Using Agents to Assist Research Tasks

Mon, 09 Feb 2026 08:00:00 +0200

I am starting to use AI agents to do the research for me, and here is my experience so far.

Data Mining for Enhanced PEM Electrolysis

Mon, 26 Jan 2026 00:00:00 +0000

The main goal of this work was to tackle the reproducibility crisis in PEM electrolysis research. Many studies focus only on the catalyst or other subparts of the cell and do not report all the parameters that influence the performance. We created a database with more than 1,000 samples from 127 publications to get more insights into the influence of different parameters on the performance.

Recap: More than 20 students supervised

Fri, 17 Oct 2025 08:00:00 +0200

I am revisiting my experience supervising more than 20 students in their research projects.

Towards a Physics Foundation Model

Tue, 23 Sep 2025 20:49:03 +0200

A new transformer-based model that learns multiple physical systems and generalizes to unseen scenarios.

ML Training Boilerplate Project

Wed, 10 Sep 2025 00:00:00 +0000

This project serves as a boilerplate for training machine learning models.

Merck Innovation Cup 2025

Sun, 27 Jul 2025 00:00:00 +0000

Participated in the Merck Innovation Cup 2025, developing an innovative solution for multi-modal models in material discovery.

Physics Foundation Model Research at University of Virginia

Sat, 15 Feb 2025 00:00:00 +0000

Excited to announce the start of my research stay working on Physics Foundation Models at the University of Virginia!

Unveiling the Role of PTFE Surface Coverage on Controlling Gas Diffusion Layer Water Content

Thu, 27 Jun 2024 00:00:00 +0000

Accurate prediction of water content in fuel cells or electrolyzers is crucial for their performance. We developed a new algorithm which is fast and accurate (enough). I am not sure if this simulation will be used in industry, but it opened up new questions and challenges regarding the role of PTFE and where to place it.

Spatio-Temporal Electrowetting and Reaction Monitoring in Microfluidic Gas Diffusion Electrode Elucidates Mass Transport Limitations

Thu, 22 Feb 2024 00:00:00 +0000

We developed a novel experimental setup (microfluidic) to visualize and study the complex interactions between water and electrodes in CO₂ reduction reactors. We hope to find new insights into the behavior of such gas diffusion electrodes.

Hiking

Fri, 12 Jan 2024 00:00:00 +0000

If I find the time, I love to go hiking. Recently, my wife and I visited the US west coast and enjoyed Yosemite National Park (photo) and Zion National Park. We also got to see the gigantic sequoias in the Sierra Nevada mountains as well as the Grand Canyon. Last year, we went to the Alps, specifically the Königssee, which offers breathtaking views of the lake and the surrounding mountains. During my research stay in Virigina, I also had the chance to explore the Appalachian mountains (Shennandoah National Park and the Blue Ridge mountains).

Snowboarding

Fri, 12 Jan 2024 00:00:00 +0000

Most winters, I try to get at least one week of snowboarding in. I’d say I’m an allrounder, enjoying some carving as well as freeriding in powder or some smaller jumps (not very good yet!). With the right people, snowboarding is one of my favorite activities. Here, you can see me enjoying the slopes of Kleinwalsertal while a good friend of mine is recording. As a teenager, I really practiced jumping and fun park stuff, but I got really rusty.

Software and Coding

Fri, 12 Jan 2024 00:00:00 +0000

I am not only a software developer at work, but also enjoy working on personal projects. You can find some of my more polished projects on my github, but oftentimes I also just play around with new technologies. Here you can see a small animation I created with a custom n-body solver. It shows two suns orbiting around each other, stealing each other’s planets. Currently, I put most of my effort into research so the fun projects have to take a backseat.

Custom CUDA Kernel

Fri, 05 Jan 2024 00:00:00 +0000

A custom CUDA kernel for masked 3D convolution operations.

N-body Simulation

Fri, 05 Jan 2024 00:00:00 +0000

A simple N-body simulation implemented in C++.

Additive Manufacturing of Intertwined Electrode Pairs - Guided Mass Transport with Gyroids

Wed, 19 Oct 2022 00:00:00 +0000

During this study, I had access to a metal 3D printer. I used it to create novel electrode designs based on mathematical surfaces called triply periodic minimal surfaces (TPMS). Such 3D electrodes can have significantly higher surface area than conventional parallel plate electrodes as well as improved mass transport. Additionally, it is just fun to create crazy-looking metal things!

Joined the TriggerInk project

Fri, 01 Apr 2022 00:00:00 +0000

Became a member of the TriggerInk project focusing cartilage tissue engineering using 3D bioprinting.

Beginning of PhD

Sat, 01 May 2021 00:00:00 +0000

Started my PhD journey in Chemical Engineering at RWTH Aachen University.

Process model for high salinity flow-electrode capacitive deionization processes with ion-exchange membranes

Tue, 15 Dec 2020 00:00:00 +0000

This was my Bachelor thesis. I developed a model (in gProms) for the flow-electrode capacitive deionization (FCDI) process. FCDI is a novel water desalination technology our chair uses to recover lithium from brines (battery waste). The simulation is able to predict the process behavior for a wide range of salinities.