Welcome...

prof.dr.ir. G. Koster (Gertjan)

Full Professor

About Me

Expertise

Engineering & Materials Science
Epitaxial Growth
Ferroelectric Materials
Heterojunctions
Nanosheets
Oxides
Pulsed Laser Deposition
Substrates
Thin Films

Research

Publications

Recent
Zhou, S. , de Hond, K., Antoja-Lleonart, J., Ocelík, V. , Koster, G. , Rijnders, G., & Noheda, B. (2024). Thin Films of α-Quartz GeO2 on TiO2-Buffered Quartz Substrates. Crystal Growth and Design, 24(1), 71-78. https://doi.org/10.1021/acs.cgd.3c00476
Nunnenkamp, M. (2023). Ferroelectrics for GaN based High Power Devices. [PhD Thesis - Research UT, graduation UT, University of Twente]. University of Twente. https://doi.org/10.3990/1.9789036558181
Verdierre, G., Gauquelin, N., Jannis, D. , Birkhölzer, Y. A., Mallik, S., Verbeeck, J., Bibes, M. , & Koster, G. (2023). Epitaxial growth of the candidate ferroelectric Rashba material SrBiO3by pulsed laser deposition. APL materials, 11(3), Article 031109. https://doi.org/10.1063/5.0138222
Zheng, J. (2023). Fast-Charging Electrodes by Crystal Structure Control Towards High-Performance Lithium-Ion Batteries. [PhD Thesis - Research UT, graduation UT, University of Twente]. University of Twente. https://doi.org/10.3990/1.9789036557986
Kante, M. V., Weber, M. L. , Ni, S., van den Bosch, I. C. G., van der Minne, E., Heymann, L., Falling, L. J., Gauquelin, N. , Tsvetanova, M. , Cunha, D. M. , Koster, G., Gunkel, F., Nemšák, S., Hahn, H., Velasco Estrada, L. , & Baeumer, C. (2023). A High-Entropy Oxide as High-Activity Electrocatalyst for Water Oxidation. ACS nano, 17(6), 5329-5339. https://doi.org/10.1021/acsnano.2c08096
Trstenjak, U., Daneu, N., Belhadi, J., Samardžija, Z., Matavž, A., Bobnar, V. , Koster, G., & Spreitzer, M. (2023). Non-stoichiometry and its implications for the properties of PMN-PT thin films. Journal of materials chemistry C, 11(3), 1144-1154. https://doi.org/10.1039/d2tc04070k
Jovanović, Z., Trstenjak, U., Ho, H. C., Butsyk, O. , Chen, B., Tchernychova, E., Borodavka, F. , Koster, G., Hlinka, J., & Spreitzer, M. (2023). Tiling the Silicon for Added Functionality: PLD Growth of Highly Crystalline STO and PZT on Graphene Oxide-Buffered Silicon Surface. ACS Applied Materials and Interfaces, 15(4), 6058-6068. https://doi.org/10.1021/acsami.2c17351
van de Putte, M. W. (2023). Vertically aligned nanocomposites as next-generation thermoelectric architectures. [PhD Thesis - Research UT, graduation UT, University of Twente]. University of Twente. https://doi.org/10.3990/1.9789036555432
Uemura, Y., Ismail, A. S. M., Park, S. H., Kwon, S., Kim, M., Elnaggar, H., Frati, F., Wadati, H., Hirata, Y., Zhang, Y., Yamagami, K., Yamamoto, S., Matsuda, I. , Halisdemir, U. , Koster, G., Milne, C., Ammann, M., Weckhuysen, B. M., & De Groot, F. M. F. (2022). Hole Dynamics in Photoexcited Hematite Studied with Femtosecond Oxygen K-edge X-ray Absorption Spectroscopy. The journal of physical chemistry letters, 13(19), 4207-4214. https://doi.org/10.1021/acs.jpclett.2c00295
Belhadi, J., Hanani, Z., Trstenjak, U., Shepelin, N. A., Bobnar, V. , Koster, G., Hlinka, J., Pergolesi, D., Lippert, T., El Marssi, M. , & Spreitzer, M. (2022). Large imprint in epitaxial 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3thin films for piezoelectric energy harvesting applications. Applied physics letters, 121(18), Article 182903. https://doi.org/10.1063/5.0115777
Koster, G. , & Rijnders, A. J. H. M. (2022). Integration of thin film functional oxides on technical substrates. Poster session presented at MESA+ Meeting 2022, Enschede, Netherlands.
van den Bosch, I. C. G., Kiens, E. , Mul, G. , Koster, G. , Mei, B. T. , & Baeumer, C. (2022). Tuning the activity of multilayer oxygen evolution electrocatalysts. Poster session presented at NWO CHAINS 2022, Veldhoven, Netherlands.
van der Minne, E., van den Bosch, I. C. G. , Le, T. P. P., Kiens, E. , Ni, S., Heymann, L. , Koster, G. , & Baeumer, C. (2022). Electrochemical Thin Films and Interfaces. Poster session presented at MESA+ Meeting 2022, Enschede, Netherlands.
Ni, S., Kante, M. V. , M. Cunha, D., Weber, M. L., van den Bosch, I. C. G., Heymann, L., van der Minne, E., Falling, L. , Koster, G., Gunkel, F., Nemsak, S., Hahn, H., Velasco, M. , & Baeumer, C. (2022). High-activity electrocatalyst La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 for water oxidation. Poster session presented at NWO CHAINS 2022, Veldhoven, Netherlands.
Birkhölzer, Y. A. , Sotthewes, K., Gauquelin, N., Riekehr, L., Jannis, D., Van Der Minne, E., Bu, Y., Verbeeck, J. , Zandvliet, H. J. W. , Koster, G. , & Rijnders, G. (2022). High-Strain-Induced Local Modification of the Electronic Properties of VO2Thin Films. ACS Applied Electronic Materials, 4(12), 6020-6028. https://doi.org/10.1021/acsaelm.2c01176
Ni, S. (2022). Relaxor ferroelectric PMN-PT thin films for low hysteretic microelectronic devices. [PhD Thesis - Research UT, graduation UT, University of Twente]. University of Twente. https://doi.org/10.3990/1.9789036554640
Other Contributions

 

UT Research Information System

Google Scholar Link

Education

Committees:

  • Educational Quality Committee Advanced Technology (2010-1012)
  • Exam Board Advanced Technology (2012-2016)
  • Educational committee AT (2016-)

Affiliated Study Programmes

Bachelor

Master

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

2016

2014

2013

2012

2011

2010

2009

2008

  •  Kunstkristalbouwer nummer drie by Henk Klomp, Technisch Weekblad no. 9 (in dutch); COMAT system

2007

  • Monitoring-and Possibly Improving-Superconducting Films by Hang Hogan, Spectroscopy Focus, September, pg 107; on APL 90 (2007) 261917
  • Watch out for the lack of oxygen by James N. Eckstein, Nature Materials (News and Views), 6 473; PRL 98 (2007) 196802
  • Evidence suggests that a ferromagnetic metal may lie at the interface between nonmagnetic insulatorsby B.G. Levi, Physics Today, June; PRL 98 (2007) 196802

Contact Details

Visiting Address

University of Twente
Faculty of Science and Technology
Carré (building no. 15), room C3247
Hallenweg 21
7522NH  Enschede
The Netherlands

Navigate to location

Mailing Address

University of Twente
Faculty of Science and Technology
Carré  C3247
P.O. Box 217
7500 AE Enschede
The Netherlands

Additional Contact Information