dr.ir. S.J.A. de Beer (Sissi)

Associate Professor

About Me

Given names: Sissi J.A.
Academic titles: dr. ir.
Birth date and place:  1979, Bergen op Zoom, The Netherlands
Present function:    Associate professor in Sustainable Polymer Chemistry
  Program director of Applied Physics


Dr. Sissi de Beer obtained her Ph.D. degree at the University of Twente. After postdoctoral fellowships at the Forschungszentrum in Jülich and the University of Toronto, she is now an associate professor at the University of Twente. In her research, Sissi combines molecular modeling with laboratory experiments to design functional polymer surfaces for application in lubrication, sensing, and molecular separations. Since April 2022, Sissi is also the program director of Applied Physics.


Professional Experience

2022–Present   Program director BSc TN* and MSc AP* (0.6 fte)
  Associate professor in Sustainable Polymer Chemistry (0.4 fte)
  Department of Molecules and Materials, University of Twente (UT)
  Program director BSc TN* and MSc AP* (0.6 fte)
2016–2022 Assistant professor Materials Science and Technology of Polymers/
Sustainable Polymer Chemistry (UT)
2015–2016 Postdoc Walker Lab, University of Toronto (Canada)
2013–2016 Research associate Materials Science and Technology of Polymers (UT)
2011–2013 Postdoctoral fellow Jülich Supercomputing Center, Jülich (Germany)
2003–2004 Management-trainee, Glaverbel Nederland, Tiel



2011     Doctor of Philosophy, Thesis: ‘Probing the Properties of Confined Liquids’, Physics of Complex Fluids, University of Twente, Enschede
2007 Master of Science, Applied Physics, University of Twente, Enschede



  • NOW TTW Perspectief awarded for RECoVR: Recovery and Circularity of Valuable Resources (2021)
  • KIJK Top Tech Ideas for eNose for the early detection of potato rot (2019)
  • HiTMaT Technology Award for eNose in early detection of animal diseases (2019)
  • Alembic Teacher of Year award (2019) 


Research Grants

  • NWO, 300k, KIC Key Enabling Technologies ELECTRIFIED (total project value ~2000k), 1 PhD (2022)
  • NWO TTW OTP, 300k, Advanced Grease Lubrication, 1 PhD (2022)
  • NWA ORC OBSeRVeD, 400k, national consortium (total ~5000k), 3yr postdoc (2022)
  • DFG Schwerpunktprogramm, 3 yr postdoc (together with Jacco Snoeijer) (2022)
  • NWO TTW Perspectief, 5000k, ReCoVR, national consortium 50% UT groups (6 PhD, 4 PDs, 5 PDEngs => 2.5 PhD in my team). (2021)
  • TKI food NIZO, 120k, astringency of plant proteins, 1 PDEng (2020)
  • 4TU.HTM, 9k, seed funding for Perspectief grant (2020)
  • UT-WWU collaboration, 80k, 1yr postdoc (together with Jacco Snoeijer) (2019)
  • NWO ENW Open Competition Klein-1, 350k, 1 PhD + 1 junior researcher (2019)
  • NWO, 300k, TA Soft Advanced Materials, 1 PhD (2019)
  • Holland High Tech, 25k, HiTMaT award, seed funding for eNose research (2019)
  • MESA+ innovation grant, 72k, 1 postdoc (2017)
  • FOM/v, 300k, personal grant (2013)


Academic Activities

  • Teaching (current)
2022-Present  Lecturer: Dynamics + Special Relativity (TN)
2022-Present Lecturer: Preparation Bachelor Assignment (TN)
2018-Present Main Lecturer: Molecular Modelling (CSE, Nano)
2018-Present Main Lecturer: Statistical Thermodynamics (CSE)
2016-Present Main Lecturer: Polymer Physics (CSE, Nano, AP)
2013-Present Lecturer: Organic Material Science (CSE, Nano)
  • Teaching (previous)
2016-2019   Lecturer: Statistical Physics (TN)
2013-2015 Lecturer: Polymer Physics (CSE)
2017 Tutor: Physical Modelling (TN & AT)
2016-2018 Coach: Project Thermodynamics (TN & AT)
2014 Coach: Project Chemistry of Sports (CSE)
2017-2021 Coach: Project Chemistry of Food (CSE) 
  • Supervision (since2015)
    • 3 postdocs,
    • 12 PhD students (6 finished, 6 ongoing),
    • 27 CSE* and Nano* master students (25 finished, 2 ongoing),
    • 23 undergraduate / visiting students
    • 30 CSE*, TN* and Nano* interns at various international companies and institutes
  • Prizes students
    • Leon Smook won the KNCV Golden Master Award (1st place) and Unilever Award (2022)
    • Rens Horst and Rick Cohen won the Holland Chemistry Student Award (2nd place) (2019)
    • Aram Klaassen and Bart Stel won the NNV Bachelor Contest (2nd place) (2010)


Organizational Responsibilities

2021–Present   Programme manager NWO Perspectief program ReCoVR
2021–Present Editorial Advisory Board ACS journal Langmuir
2020–Present Board member YA@UT            
2019–Present Program coordinator ‘Alternative Driving Forces Forces’ in
‘Industrial Fluid Processing’ cluster of ISPT (Institute for Sustainable
Process Technologies)
2021–2022 Member Programme Committee (OLC) of CSE*         
2020–2022 Member Shaping 2030 Expert Team on Sustainability
2019–2022 Track coordinator Molecules and Materials Engineering (CSE)
2017–2022 Mentor for BSc CSE students Chemical Engineering
2019 Co-organiser ICBZM conference, Rolduc, Kerkrade
2015–2019 Initiator and organizer of the UT Soft Matter day
2013–2019 Initiator and organizer of the Soft Matter+ colloquium series
2011–2012 Assistant in organization Lorentz Workshop: ‘Fundamental Aspect of
Friction and Lubrication’
2010 Assistant in organization Dutch Nanofluidics Days



Engineering & Materials Science
Polymethyl Methacrylates
Polymer Brush
Physics & Astronomy


In my research, I translate fundamental polymer physics models to technological applications. My students and I study the properties of functional polymer surfaces. These coatings can be employed in advanced sensor platforms and in separation technologies that enable the transition to a circular economy.


Brio Perez, M. (2024). A Journey Towards Responsive and Circular Polymer Brushes: Design and Applications. [PhD Thesis - Research UT, graduation UT, University of Twente]. University of Twente. https://doi.org/10.3990/1.9789036559805
Ma, X., Albertsma, J., Gabriels, D., Horst, R., Polat, S., Snoeks, C., Kapteijn, F., Eral, H. B. , Vermaas, D. A. , Mei, B. , de Beer, S., & van der Veen, M. A. (2023). Carbon monoxide separation: past, present and future. Chemical Society reviews, 52, 3741-3777. https://doi.org/10.1039/d3cs00147d
Heinz, H., Joshi, Y. M., Zeng, H., Tsao, H. K. , de Beer, S. J. A., Koos, E., Takahara, A., & Walker, G. C. (2023). 2023 Highlights in Interface Science and Engineering: A Collection of Virtual Special Issues. Langmuir, 39(31), 10711-10714. https://doi.org/10.1021/acs.langmuir.3c01562

UT Research Information System

Google Scholar Link


I am the program director of Applied Physics (AP). In this role, it is my aim to ensure that AP stays the top programme is currently is. Within AP we train high-quality professionals within a strong community of students, staff and teachers, in which we facilitate that everyone can bring out the best out of themselves.

Affiliated Study Programmes



Courses Academic Year  2023/2024

Courses in the current academic year are added at the moment they are finalised in the Osiris system. Therefore it is possible that the list is not yet complete for the whole academic year.

Courses Academic Year  2022/2023

In the press

Publication Polymer Physics course (November 2022)

Leon Smook (my PhD student) wins two prizes

NWO TTW OTP grant Advanced Grease Lubrication awarded (October 2022)

NWO, KIC Key Enabling Technologies ELECTRIFIED awarded (June 2022)

My appointment as program director TN / AP (February 2022)

Leon Smook (my master student) published 3 peer reviewed articles (September 2021)

NWO Perspectief grant ReCoVR awarded (March 2021)

Rens Horst (Master student) and Rick Cohen (Bachelor student) nominated for Holland Chemistry Student Award and KIJK Top Tech Idea (September 2019)

NWO ENW Open Competition awarded (July 2019)

Contact Details

Visiting Address

University of Twente
Faculty of Science and Technology
Carré (building no. 15), room C4227
Hallenweg 21
7522NH  Enschede
The Netherlands

Navigate to location

University of Twente
Faculty of Science and Technology
Carré (building no. 15), room C4629
Hallenweg 21
7522NH  Enschede
The Netherlands

Navigate to location

University of Twente
Faculty of Science and Technology
Carré (building no. 15), room C4227
Hallenweg 21
7522NH  Enschede
The Netherlands

Navigate to location

University of Twente
Faculty of Science and Technology
Carré (building no. 15), room C4629
Hallenweg 21
7522NH  Enschede
The Netherlands

Navigate to location

Mailing Address

University of Twente
Faculty of Science and Technology
Carré  C4227
P.O. Box 217
7500 AE Enschede
The Netherlands