Product and Process Engineering - Delft University of Technology

J. Ruud van Ommen

Ruud van Ommen

Dispersed multiphase reactors: monitoring, structuring, nanoparticles

Contact details

  • Prof. Dr. Ir. J. Ruud van Ommen
  • Delft University of Technology, TNW-PPE
  • Room F2.390
  • van der Maasweg, 9, 2629 HZ, Delft, The Netherlands
  • Phone: +31-(0)15-278 2133

Research interests

  • Dispersed multiphase flows
  • Nanostructured materials
  • Scale-up
  • Nanotechnology
  • Atomic layer deposition

Latest publications

  • Recommended Reading List of Early Publications on Atomic Layer Deposition-Outcome of the “Virtual Project on the History of Ald”, Esko Ahvenniemi, Andrew R. Akbashev, Saima Ali, Mikhael Bechelany, Maria Berdova, Stefan Boyadjiev, David C. Cameron, Rong Chen, Mikhail Chubarov, Veronique Cremers, Anjana Devi, Viktor Drozd, Liliya Elnikova, Gloria Gottardi, Kestutis Grigoras, Dennis M. Hausmann, Cheol Seong Hwang, Shih-Hui Jen, Tanja Kallio, Jaana Kanervo, Ivan Khmelnitskiy, Do Han Kim, Lev Klibanov, Yury Koshtyal, A. Outi I. Krause, Jakob Kuhs, Irina Kaerkkaenen, Marja-Leena Kaariainen, Tommi Kaariainen, Luca Lamagna, Adam A. Lapicki, Markku Leskela, Harri Lipsanen, Jussi Lyytinen, Anatoly Malkov, Anatoly Malygin, Abdelkader Mennad, Christian Militzer, Jyrki Molarius, Malgorzata Norek, Cagla Ozgit-Akgun, Mikhail Panov, Henrik Pedersen, Fabien Piallat, Georgi Popov, Riikka L. Puurunen, Geert Rampelberg, Robin H. A. Ras, Erwan Rauwel, Fred Roozeboom, Timo Sajavaara, Hossein Salami, Hele Savin, Nathanaelle Schneider, Thomas E. Seidel, Jonas Sundqvist, Dmitry B. Suyatin, Tobias Torndahl, J. Ruud van Ommen, Claudia Wiemer, Oili M. E. Ylivaara, and Oksana Yurkevich. Journal of Vacuum Science & Technology a 2017, 35  (1), 010801.
    [Full Details]     [BibTeX]     Publisher: [DOI] 
  • Room-Temperature Pulsed Cvd-Grown Sio2 Protective Layer on Tio2 Particles for Photocatalytic Activity Suppression, Jing Guo, Shaojun Yuan, Yangyang Yu, J. Ruud van Ommen, Hao Van Bui, and Bin Liang. Rsc Advances 2017, 7  (8), 4547–4554.
    [Full Details]     [BibTeX]     Publisher: [DOI] 
  • A New Cut-Cell Algorithm for Dsmc Simulations of Rarefied Gas Flows Around Immersed Moving Objects, Wenjie Jin, J. Ruud van Ommen, and Chris R. Kleijn. Computer Physics Communications 2017, 212 , 146–151.
    [Full Details]     [BibTeX]     Publisher: [DOI] 
  • Simulation of Atomic Layer Deposition on Nanoparticle Agglomerates, Wenjie Jin, Chris R. Kleijn, and J. Ruud van Ommen. Journal of Vacuum Science & Technology a 2017, 35  (1), 01B116.
    [Full Details]     [BibTeX]     Publisher: [DOI] 
  • Atomic and Molecular Layer Deposition: Off the Beaten Track, H. Van Bui, F. Grillo, and J. R. van Ommen. Chemical Communications 2017, 53  (1), 45–71.
    [Full Details]     [BibTeX]     Publisher: [DOI] 


  • MSc Chemical Engineering, Delft University of Technology, 1996
  • PhD, Delft University of Technology, 2001

Honors and awards

  • Selected for special issue Journal of Materials Chemistry: Rising Stars, Young Nanoarchitects in Materials Science, 2013
  • ERC Starting Independent Researcher Grant, 2011
  • Runner-up Delft Innovation Award, 2011
  • Best Paper Award: fluidization and fluid-particle systems, Particle Technology Forum, AIChE, 2007
  • Veni grant, Dutch National Science Foundation NWO, 2005
  • DSM Award for Chemistry and Technology for PhD work, 2002
  • Teaching

      Current courses:
    • Multiphase Reactor Engineering
    • Nanoparticle Technology
    • Energy from Biomass: see our book

    Research description

    Since my appointment as a faculty member in 2001, I have been leading my own research team. My original fields are particle technology and chemical reaction engineering. In recent years, I have augmented my research interest from more traditional chemical engineering topics to the scalable production of advanced, nanostructured materials. In 2011, I started an ambitious programme (funded by an ERC Starting Grant) to investigate the interplay between agglomeration and coating of nanoparticles in the gas phase. This fundamental work, focusing on coating existing particles, is now already leading to practical applications, funded by industry and an ERC Proof of Concept grant. That grant also enabled me to set up a spin-out a company (Delft IMP) from my group.

    I currently head a team of six PhD students and three post-docs, working on making nanostructured materials by methods such as atomic layer deposition and electrospray deposition. We have developed an electrospray process to deposit pharmaceutical ingredients on host particles. With my team, I have demonstrated that atomic layer deposition on particles can be carried out at atmospheric pressure. We have patented this methodology; before it was always carried out at low pressures. Using small-angle neutron scattering combined with modelling work, I have recently revealed the multi-fractal structure of nanoparticle agglomerates in the gas phase. This fundamental knowledge puts me in the position to take the next leap towards to integrated synthesis and functionalization of advanced solid materials, and enable a variety of relevant applications, ranging from catalysis to controlled-release medicines.

    Currently running projects include:

    1. Ultrathin coating of nanoparticles using atomic and molecular layer deposition (David Valdesueiro)
    2. Simulating coating and agglomeration of nanoparticles (Wenjie Jin)
    3. Mechanistic investiation of film versus island growth in atomic layer deposition (Fabio Grillo)
    4. Development of a 177Lu generator based on the long lived 177mLu (Josette Moret)
    5. Novel nanostructured materials by gas-phase processing (Hao Van Bui)
    6. Agglomeration behaviour of nanoparticles (Andrea Fabre)
    7. Interparticle forces in nanoparticle agglomerations (Samir Salameh)
    8. Light-Generating Photocatalysts and Intensified Reactors (Maryam Khodadadian)


    I often have projects for interested PhD students and post-docs. In the Dutch academic system, faculty apply for a grant to fund a student, which typically means that the subject for a thesis work is defined by faculty, not the student, although exceptions are possible. That said, we try and accommodate ambitions of students and post-docs. In fact, we need to have a sense of the interests and ambitions of prospective students to consider them. If you are interested in working with me, please send a letter of motivation and a brief statement of objectives and research interests with your resume.

    . © Delft University of Technology - PPE group 2015