Horst Complex

prof.dr. W.L. Vos (Willem)

Full Professor
TNW-ANP-COPS
Horst Complex ME117
w.l.vos@utwente.nl
+31534895388
Business card

Willem Vos obtained a Ph.D. in physics at the University of Amsterdam with highest honors (cum laude) for his thesis “Phase behavior of simple systems at high pressure”. He held a prestigious Fellowship at the Geophysical Laboratory (Carnegie Institution for Science, USA) where he discovered a novel class of "van der Waals compounds" at very high pressures. He then studied photonic crystal and colloid physics. His team developed “inverse opal” photonic crystals; their Science paper inspired many groups (>1350 citations). Since 2002 he is professor in Complex Photonic Systems (COPS), University of Twente. His team demonstrated the first ever control of spontaneous emission of light with a 3D photonic band gap. Vos is Fellow of the APS and the OSA, recipient of the Snellius medal and the Descartes-Huygens prize. He is currently collaborating with both major high-tech industries and with SMEs, in order to put his group's know-how to use by solving practical problems. His papers are on average cited >40x. His students have become faculty members at leading institutes, or pursue careers in major industries and non-profit organizations.

See on the web: https://nano-cops.com/

Expertise

  • Physics

    • Light
    • Photonics
    • Gaps
    • Media
    • Photonic Crystal
    • Crystals

  • Material Science

    • Photonic Band Gap
    • Crystal

Organisations

Ancillary activities

  • QuixAdvies & aandeelhouder

Publications

Jump to: 2024 | 2023

2024

Non-utopian optical properties computed of a tomographically reconstructed real photonic band gap crystal (2024)[Working paper › Preprint]. ArXiv.org. Willenswaard, L. J. C. v., Smeets, S., Renaud, N., Schlottbom, M., Vegt, J. J. W. v. d. & Vos, W. L.https://doi.org/10.48550/arXiv.2402.09395Enhanced Spontaneous Emission of PbS Quantum Dots in 3D Photonic Band Gap Crystals (2024)[Contribution to conference › Poster] NWO Physics 2024. Vreman, T. J., van den Oudenrijn, J., Goodwin, M. J., Lagendijk, A. & Vos, W. L.Strongly inhibited spontaneous emission of PbS quantum dots inside 3D silicon photonic crystals (2024)[Contribution to conference › Poster] NWO Physics 2024. Schulz, A. S., Kozon, M., Huskens, J., Vancso, G. J. & Vos, W. L.

2023

Data: Non-utopian optical properties computed of a tomographically reconstructed real photonic band gap crystal (2023)[Dataset Types › Dataset]. Zenodo. Corbijn van Willenswaard, L. J., Smeets, S., Renaud, N., Schlottbom, M., van der Vegt, J. J. W. & Vos, W. L.https://doi.org/10.5281/zenodo.10419090Wavefront shaping through a free-form scattering object (2023)Optics express, 31(26), 4335143361. Rates, A., Lagendijk, A., Adam, A. J. L., Ijzerman, W. L. & Vos, W. L.https://doi.org/10.1364/OE.505974Symmetries and Wavefunctions of Photons Confined in 3D Photonic Band Gap Superlattices (2023)[Working paper › Preprint]. ArXiv.org. Kozon, M., Lagendijk, A., Schlottbom, M., van der Vegt, J. J. W. & Vos, W. L.https://doi.org/10.48550/arXiv.2311.18123Strongly inhibited spontaneous emission of PbS quantum dots covalently bound to 3D silicon photonic band gap crystals (2023)[Working paper › Preprint]. ChemRxiv. Schulz, A. S., Kozon, M., Vancso, J., Huskens, J. & Vos, W. L.https://doi.org/10.26434/chemrxiv-2023-hnh2dTransparency, Secrecy, and Profiling using Mutual Scattering in Complex Media (2023)[Thesis › PhD Thesis - Research UT, graduation UT]. University of Twente. Rates, A.https://doi.org/10.3990/1.9789036558501Wavefront shaping through a free-form scattering object (2023)[Working paper › Preprint]. ArXiv.org. Rates, A., Lagendijk, A., Adam, A. J. L., IJzerman, W. L. & Vos, W. L.https://doi.org/10.48550/arXiv.2310.04879Spontaneous Emission of PbS Quantum Dots Controlled by Silicon Photonic Band Gap Crystals (2023)[Contribution to conference › Poster] MESA+ Meeting 2023. Vreman, T. J., van den Oudenrijn, J., Goodwin, M. J., Rates, A., Akdemir, O., Mulder, L., Schulz, A. S., F. L. Alferink, N., Corbijn van Willenswaard, L. J., Kamphuis, G. J., Harteveld, C. A. M., Takahashi, S., Lagendijk, A. & Vos, W. L.Unsupervised machine learning to classify the confinement of waves in periodic superstructures (2023)Optics express, 31(19), 31177-31199. Kozon, M., Lagendijk, A., Schlottbom, M., van der Vegt, J. J. W. & Vos, W. L.https://doi.org/10.1364/OE.492014Computation of Optical Properties of Real Photonic Band Gap Crystals as Opposed to Utopian Ones (2023)[Contribution to conference › Poster] CLEO/Europe-EQEC 2023. Corbijn van Willenswaard, L. J., Smeets, S., Renaud, N., Schlottbom, M., Vos, W. L. & van der Vegt, J. J. W.Computation of Optical Properties of Real Photonic Band Gap Crystals as Opposed to Utopian Ones (2023)In 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). Article 10232742 (Proceedings Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC); Vol. 2023). IEEE. Willenswaard, L. J. C. v., Smeets, S., Renaud, N., Schlottbom, M., Vos, W. L. & van der Vegt, J. J. W.https://doi.org/10.1109/CLEO/Europe-EQEC57999.2023.10232742Probing the Position Resolved Energy Density Inside Photonic Scattering Slabs with Strong Absorption and Anisotropy (2023)In 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023. IEEE. Akdemir, O., Bitenc, L., L Maxwell, I., Goodwin, M., Truong, M. D., Lagendijk, A. & Vos, W. L.https://doi.org/10.1109/CLEO/EUROPE-EQEC57999.2023.10232580Probing the Position Resolved Energy Density Inside Photonic Scattering Slabs with Strong Absorption and Anisotropy (2023)[Contribution to conference › Poster] NWO Physics 2023. Akdemir, O., Bitenc, L., L Maxwell, I., Goodwin, M. J., Truong, M. D., Lagendijk, A. & Vos, W. L.Light transport in anisotropically scattering and absorbing media (2023)[Thesis › PhD Thesis - Research UT, graduation UT]. University of Twente. Akdemir, O.https://doi.org/10.3990/1.9789036557801Enhanced secrecy in optical communication using speckle from multiple scattering layers (2023)Optics express, 31(15), 23897-23909. Rates, A., Vrehen, J., Mulder, B., Ijzerman, W. L. & Vos, W. L.https://doi.org/10.1364/OE.493479Multiple Scattering Layers As Physical Unclonable Functions For Optical Wireless Communication (2023)[Contribution to conference › Poster] CLEO/Europe-EQEC 2023. Rates, A., Vrehen, J., Mulder, B. L., IJzerman, W. L. & Vos, W. L.Fabrication of 3D Photonic Band Gap Crystals from Silicon (2023)In 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) . Goodwin, M. J., Harteveld, C. A. M., Corbijn van Willenswaard, L. J., Vreman, T. J., Schulz, A. S., Grishina, D. & Vos, W. L.https://opg.optica.org/abstract.cfm?uri=CLEO_Europe-2023-ck_p_33Photonic Energy Density and Scattering from Random and Periodic Arrays of Silicon Pillars (2023)In 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) . Goodwin, M. J., Akdemir, O., Truong, M. D., Bitnec, L., Lagendijk, A. & Vos, W. L.Deep reactive ion etching of cylindrical nanopores in silicon for photonic crystals (2023)Nanotechnology, 34(22). Article 225301. Goodwin, M. J., Harteveld, C. A. M., de Boer, M. J. & Vos, W. L.https://doi.org/10.1088/1361-6528/acc034Sensing the position of a single scatterer in an opaque medium by mutual scattering (2023)Optics express, 31(9), 15058-15074. Truong, M. D., Lagendijk, A. D. & Vos, W. L.https://doi.org/10.1364/OE.482472Optical properties of chiral three-dimensional photonic crystals (2023)Physical review B: Covering condensed matter and materials physics, 107(16). Article 165307. Takahashi, S., Tajiri, T., Arakawa, Y., Iwamoto, S. & Vos, W. L.https://doi.org/10.1103/PhysRevB.107.165307Spontaneous Emission of PbS Quantum Dots Controlled by 2D Silicon Photonic Crystals (2023)[Contribution to conference › Poster] PECS-XIII. Vreman, T. J., van Essen, P., Goodwin, M. J., Harteveld, C. A. M., Takahashi, S. & Vos, W. L.Calculations of Real Photonic Band Gap Crystals as Opposed to Utopian Ones (2023)[Contribution to conference › Poster] PECS-XIII. Corbijn van Willenswaard, L. J., Smeets, S., Renaud, N., Schlottbom, M., van der Vegt, J. J. W. & Vos, W. L.

Research profiles

In education, it is ultimately my goal to challenge (in Dutch: uitdagen) students by - in an ideal setting - asking questions that have not been answered before. Of course, finding an answer - or even the approach to an answer, or even more basically whether the question is answerable at all - will become a joint adventure that is approached with lots of discussions in the beginning (what path shall we try first?), during the project (are we going in a right direction?), or at the end (do we explain things clearly to colleagues?)
While such an approach does not eschew "high risk and high gain", it often leads to the most exhilarating experiences. And not to worry, COPS seniors are always on board to join the ride (even when it gets bumpy at times), so: shared sorry & shared happiness!
Drop by for a discussion, and just so you know: we have got the best coffee on campus!

Affiliated study programs

Courses academic year 2024/2025

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 2023/2024

Courses academic year 2022/2023

I am leading ("PI") several major research programs in close collaboration with high-tech industry:

NWO-TTW Perspectief program "Advanced Wave Engineering for Sustainable Optical Applications (AWAVE)" (jointly with Nandini Bhattacharya from TUD), 2024-2030, see https://www.utwente.nl/en/news/2023/12/1279316/second-year-in-a-row-big-perspectief-programme-for-willem-vos

NWO-TTW Perspectief program "Optical coherence; optimal delivery and positioning (OPTIC)", 2023-2029, see https://www.utwente.nl/en/news/2022/12/370068/46-million-euros-for-ut-research-on-light-conduction

NWO-TTW Perspectief program "Freeform scattering optics (FFSO)", 2016-2023, see: https://www.freeformscatteringoptics.com/

FOM open program "Stirring of Light!", 2011-2016

COPS YouTube channel: https://www.youtube.com/@nanocops/videos

COPS 20th anniversary (in 2022): https://www.youtube.com/watch?v=iCWY5-Juebk

COPS on the 8 o'clock prime time news, aka NOS 8-uur journaal: https://www.youtube.com/watch?v=nR4tIaYUFBY

New York Times, Science Watch "A van der Waals solid", July 7, 1992, see: https://www.nytimes.com/1992/07/07/science/science-watch-a-van-der-waals-solid.html

Address

University of Twente

Horst Complex (building no. 20), room ME117
De Horst 2
7522 LW Enschede
Netherlands

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