Our Team

  • Portrait photo of Sascha Feldmann

    Sascha Feldmann, Ph.D.

    Sascha is a Research Group Leader and Rowland Fellow at Harvard University’s Rowland Institute, as well as tutor and SCR member at Winthrop House of Harvard College.

    Prior to starting his lab at Harvard, Sascha studied Chemistry at Heidelberg University (Germany) and completed a PhD in Physics at the University of Cambridge (UK), where he subsequently worked as an EPSRC Doctoral Prize Fellow.

    Outside of work, Sascha explores the physics & chemistry around food at home, as he has a passion for cooking & baking - or can be found in the gym to somewhat make up for the above…

    You can read more about Sascha in his interview with Angewandte Chemie here.

  • Portrait photo of Antti

    Antti Reponen, Ph.D.

    Antti is a postdoctoral research fellow in the Feldmann Lab with a focus on molecular photophysics and chiroptical spectroscopy development.

    He studied Physics at the University of Cambridge (UK) and completed his PhD in Physics at the Cavendish Laboratory with Prof. Neil Greenham.

  • Portrait photo of Zach

    Zachary VanOrman, Ph.D.

    Zach is a postdoctoral research fellow in the Feldmann Lab specializing in perovskite photophysics and new approaches to semiconductor nanocrystal synthesis.

    He studied Chemistry at Hillsdale College (MI) and completed his PhD in Chemistry at Florida State University in Tallahassee (FL) with Prof. Lea Nienhaus.

    Read more about Zach here!

  • Kinga Mastej Portrait Photo

    Kinga Mastej

    Kinga joins us for her Master’s thesis in Chemistry from the University of Oxford (UK). Jointly supervised by Prof. Volker Deringer, she explores machine-learning-assisted materials synthesis & computational modelling with us.

  • Benjamin Savinson profile picture

    Benjamin Savinson, B.Sc.

    Benjamin joins us for his Master’s thesis in Physics as an Excellence Scholar at ETH Zurich. He is interested in new materials for sustainable energy and quantum technologies.

  • Huygen Jöbsis photograph

    Huygen Jöbsis, M.Sc.

    Huygen joins us as a final year PhD student in Chemistry from Eline Hutter’s group at Utrecht University (Netherlands). His research is focused on the synthesis of novel perovskite-like materials and their photophysics.

  • Portrait shot of Marcel Mattes

    Marcel Mattes, M.Sc.

    Marcel joined us for his Master's thesis in Computer Science. He is a former research fellow at the Institute of Production Science at Karlsruhe Insitute of Technology (Germany) and is interested in machine learning and software architecture.

  • Langa Siziba portrait

    Langelihle (Langa) Siziba

    Langa joins us as a summer (REU) intern and is an Electrical Engineering student at Harvard (‘25) working on chiroptical setup design with us.

  • Ina Heckelmann worked in Sascha Feldmann's group

    Ina Heckelmann, M.Sc. [Alumna]

    Ina joined Sascha’s group for her Master’s thesis on the optoelectronic properties of self-assembled chromophore systems. She currently completes her PhD at ETH Zurich in the group of Jérôme Faist working on quantum cascade lasers.

  • Mateo Cárdenes Wuttig profile

    Mateo Cárdenes Wuttig, B.Sc. [Alumnus]

    Mateo joined us for his Bachelor’s thesis in Physics. He is currently enrolled at the University of Heidelberg (Germany) and is interested in semiconductor nanocrystals and quantum devices.

  • Portrait photo of Winald

    Winald Kitzmann, Ph.D. [Alumnus]

    Winald joined us as a final year PhD student in Chemistry from the group of Prof. Katja Heinze at the University of Mainz (Germany). His research is focused on novel chiral luminescent transition-metal complexes and their photophysics.

  • Rowland Staff

    And very importantly: The fantastic staff at the Rowland Institute, featuring experts in optics, electronics, chemistry and engineering - without them our dream lab couldn’t exist!

    Kal | Chris | Scott | John | Erik | Alan | Win | Alexis | Amy