Our team

Juanita Rausch, PhD - Director
Juanita Rausch is a geologist and particle analysis specialist with deep expertise in morpho-chemical single particle characterization. She holds a PhD from the University of Fribourg, where she investigated volcanic fragmentation processes and fine particle dynamics. Before Particle Vision, she worked as a teaching assistant in geosciences and completed a research internship at the Hawaiian Volcano Observatory. As Director, she leads the scientific and operational direction of the company, ensuring methodological excellence and application-oriented results.

David Jaramillo, PhD - R&D & Microscopy
David is a geologist with a Diplom (MSc) from the University of Hamburg and a PhD in sedimentology from the University of Fribourg. He leads Research & Development as well as the Microscopy Laboratory at Particle Vision, where he has been active since 2016. With extensive experience in the application of SEM/EDX to environmental samples, he oversees and continuously develops the microscopy analysis of airborne particles.

Daniel Jaramillo, MBA - Business Development
Daniel brings over a decade of international experience in business development, e-commerce, and strategy. At Particle Vision, he leads global growth initiatives, product portfolio development, and strategic collaborations. He holds an MBA from IMD (Switzerland), an MSc in Strategic Management from RSM (Netherlands), and a BBA from Universidad de los Andes (Colombia). Daniel speaks five languages and combines commercial expertise with a strong interest in innovation and sustainable development.

Prof. Bernard Grobéty - Scientific Advisor
Bernard Grobéty is a professor emeritus of mineralogy and materials science at the University of Fribourg and a recognized expert in the morpho-chemical analysis of airborne particles. His research has contributed significantly to the development of single particle characterization techniques using SEM/EDX. At Particle Vision, he serves as scientific advisor, supporting the advancement of particle forensics methodologies and ensuring rigorous academic foundations. He has co-authored numerous peer-reviewed publications and regularly collaborates with environmental authorities and interdisciplinary research teams.

Ildiko Katona Serneels, PhD - Microscopist
Ildikó Katona Serneels is a specialist in electron microscopy and mineralogical analysis, holding a PhD in geosciences. She has extensive experience applying SEM/EDX techniques to environmental samples. At Particle Vision, she is responsible for preparing and analyzing environmental samples, ensuring high-quality data throughout our laboratory workflows. In addition to her technical role, she supports key operational processes.

Raphael Kunz, B.Sc. - Microscopist and Field Assistant
Raphael Kunz holds a BSc in geosciences and specializes in scanning electron microscopy and sample preparation. At Particle Vision, he supports both laboratory operations and field deployments.
"We greatly appreciated the ability of the Particle Vision team to develop analytical and statistical methods that allowed us to better characterize fine dusts, their components and their origins. These methods will also be very useful in the future for analysing dust resulting from the abrasion of various metallic or mineral materials.
Richard Ballaman, Head of the Air Quality Section at the Federal Office for the Environment
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«Pleasant and very professional collaboration. State-of-the-art expertise, precious advice and passionate scientific discussions.»
«The Office for Nature and Environment (ANU) Graubünden has been working successfully with Particle Vision on several projects since 2014. In addition to the chemical and morphological composition of coarse and fine dust, as well as microparticles, the source contributions of dust particles could also be quantitatively determined thanks to the knowledge and technical equipment of Particle Vision. This has made it possible for the ANU Graubünden to verify the implementation of various measures in wood-burning and industrial activities. But also, in the case of dust disturbances the ANU Graubünden has been supported by Particle Vision, and it was possible to determine the sources of the dust pollution and their contributions to the dust. We can unreservedly recommend the cooperation with Particle Vision.»
The Department of Air, Noise and Non-Ionizing Radiation (SABRA) / State of Geneva has called upon Particle Vision's expertise on several occasions to perform analyses on fine particles measured in the canton. These collaborations, which have highlighted Particle Vision's flexibility and professionalism, have enabled SABRA to obtain detailed information on fine particle emission sources and their composition.