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Daniel Stefaniak, department head at the DLR German Aerospace Center appointed visiting researcher at TU Delft

We welcome Daniel Stefaniak, who was appointed visiting researcher at the Faculty of Aerospace Engineering. He is department head of the Center for Composite Process Technologies at the German Aerospace Centre in Stade. Daniel Stefaniak studied mechanical engineering at the University of Hannover and obtained his PhD at the University of Braunschweig, investigating the improvement of the residual strength of unidirectionally reinforced plastic laminates by metal layering. He has since worked in different positions at the DLR German Aerospace Center. He was team leader for multi-material systems and later business unit manager wing at the DLR Institute of Composite Structures and Adaptive Systems. In 2021, he was appointed Head of the department Composite Process Technologies at Institute of Composite Structures and Adaptive Systems (DLR German Aerospace Centre) and Head of Center for Lightweight-Production-Technology (ZLP®) , Stade, Germany. His early research investigated the structure-property relationship of composites with metal hybridization, leading to relevant hybridization technologies. In his current responsibility, the ZLP addresses the manufacture of very large, complex components in high-production fibre placement processes and sensor-guided component-specific control of thermally inert curing processes in autoclaves and open moulds. The researchers in Stade are also working on fully automated manufacturing of high-volume components using dry textile semi-finished products in the resin transfer moulding process. For his part time assignment, Daniel Stefaniak joins the Aerospace Manufacturing Technologies Group . We look forward to further strengthening synergistic activities between our institutions. Dr. D. (Daniel) Stefaniak Visiting Researcher ✉ D.Stefaniak@tudelft.nl

Yenni Villa Acuña

Faculty of Civil Engineering and Geosciences Yenni completed her master’s degree in Applied Earth Sciences. Her thesis work is part of the IDEA-League Master Program and is done as an internship at Aramco Overseas Company BV in Delft. Minimisation and optimisation are at the heart of many challenges oil & gas companies face in structural imaging of the subsurface in oil & gas exploration. Many algorithms and ideas struggle to find robust solutions because of the scale and complexity of the subsurface. During a period of 5 months, Yenni created new ideas to make a general optimisation method significantly faster and more robust. She also demonstrated the applicability of the new method to a number of synthetic data sets that are well-known in the field of numerical optimization, as well as to seismic data processing algorithms that are used by many oil & gas companies. The quality of the results achieved are extraordinary. Yenni’s thesis was rewarded with an impressive 9.5 and her work has already been recognized as state of the art in current seismic processing software. “Yenny worked very independently on her thesis while taking the suggestions of her supervisors seriously. She managed to defended her thesis as good as perfectly. Besides her thesis work, she also did her course work very well, with excellent marks in all 3 high-standard European universities (ETH, TUD and RWTH).” Graduation committee - Dr G.G. Drijkoningen, Dr Yimin Sun, Dr Florian Wellman. Thesis synopsis Since its inception in 1975, Genetics Algorithms (GA) have been successfully used as a tool for global optimization of non-convex problems in several real world applications. Its creation was inspired by the neo-Darwinian theory of evolution, where the goal is to evolve an initial population of candidate solutions using the artificial operators of selection, crossover and mutation. An advanced Genetic Algorithm (aGA) was developed by AOC* to find the global maximum of n-th dimensional non-convex functions. However, as computational time is a key factor when it comes to scalability, the objective of this project is to improve the convergence speed of this currently available aGA by simultaneously enhancing both its global and its local search capabilities. To this end, two solutions were proposed. The first is a modified version of the well-known Island model GAs and the second is a Self-Adaptive Differential Evolution (SADE) fine tuning scheme. After a successful demonstration of its improved performance on multi-modal test functions, my enhanced Genetic Algorithm (eGA) is used to tackle two common non-linear Geophysical problems: static correction and Common Reflection Surface (CRS) stacking, where promising results were obtained. *AOC: Aramco Overseas Company

Rhythima Shinde

Faculty of Technology, Policy and Management Rhythima Shinde completed two master’s programmes: Engineering and Policy Analysis (EPA, with honours), including field work in India, and Computer Science, including a graduate project at ETH Zurich. Her career as an Honours student at Delft furthermore included an active board membership of the Energy Club, the publication of several journal papers and a book chapter, various student assistantships to support cybersecurity and open-data research, and the development of MOOCs. She also co-founded a start-up company ‘Energy Bazaar’, where she now puts her research findings and recommendations to immediate use. Rhythima graduated from MSc EPA on electrifying rural India through institutional innovation. Her thesis was rewarded with a grade 9.5. She executed empirical research in India and developed an institutional innovation framework to analyse her empirical findings, furthering Nobel prize winner Elinor Ostrom’s work. She built various agent-based computational models to verify her framework and then, through this framework and her models, she identified feasible and durable system designs and policy alternatives for electrifying rural India. She more than proved her mastery of all skills that make her a true Delft-trained policy analyst: providing computationally strong, empirically-sound engineering solutions for solving society’s critical issues. “Rhythima’s career in Delft is nothing short of impressive and she may be the ultimate example of a scientifically driven, intelligent, broadly-interested, entrepreneurial, socially responsible engineer, with a demonstrable impact on science and society.” Graduation committee – Prof. Paulien Herder, Dr Amineh Ghorbani, Dr Martijn Warnier Thesis synopsis Around 100 million households live without electricity in India. At the same time, there is a booming solar panel market in India. This gives an opportunity for escalating the reach through peer to peer (p2p) electricity exchange. The thesis explored the potential and challenges of this p2p solution with an extensive field study, development of theoretical framework to understand diffusion of emerging technologies considering community benefits (e.g. role of cooperative shops, etc.) and finally proposing socio-tech policies (e.g. hybrid microgrid-p2p solutions, anonymization of network) for making such projects a success for energy companies and consumers. The results of this thesis were successfully implemented in a computer science thesis to facilitate AI based optimization platform. The cumulative knowledge thus gained has lead to start-up 'Energy Bazaar' to implement the results in India. If implemented at scale, these solutions would accelerate complete household electrification of India by 2025.

Charlotte Koster

Faculty of Applied Sciences Charlotte obtained her master’s degree in Life Sciences & Technology. She chose to focus on the generation and analysis of industrially relevant yeast hybrids. She developed a fast and efficient method to generate new genetic variants of yeasts by ‘crossing’ parental strains with specific desired characteristics. The method that Charlotte designed, tested and optimized is highly relevant for industrial application. She applied this method to produce a new hybrid yeast that can be used in the beer brewing industry. Her thesis formed the basis for a patent application, on which she is one of the inventors. Charlotte received an impressive 9.5 for her thesis. Besides her excellent study achievements, she has also been an active member of the TU Delft student team that won a gold medal in the 2016 International Genetically Engineered Machine competition (iGEM). Another illustrative example of Charlotte’s drive to seek challenges is her internship performed at Ginkgo Bioworks, a high-profile Boston-based company active in the frontline of synthetic biotechnology. The top scientists who supervised Charlotte at Ginkgo awarded her a 9.5 for her internship. “During her graduation project, Charlotte was not only scientifically, but also socially a ‘pacemaker’, with a very positive impact on our research group. As evident from discussions in the lab and her activities on social media, she has an active interest in the societal impacts of science.” Graduation committee – Prof. Jack Pronk, Arthur Gorter de Vries, Dr Jean-Marc Daran, Dr Peter-Leon Hagedoorn Thesis synposis With ongoing climate change, we need to make our industrial processes more sustainable. In biotechnology, micro-organisms like yeast are used as ‘cell factories’ to produce products like biofuels, medicine and bioplastics in a sustainable way. However, this often requires genetic modification of the organisms, which is still a controversial issue. The use of hybrid yeasts can form a non-GMO alternative. Like some animals, different yeasts can mate with each other, forming hybrids that inherit qualities from each parent. For instance, mating a bioplastic-producing yeast with a plant-consuming yeast could result in a hybrid capable of making bioplastics from plant waste, without using genetic modification. However, such mating is rare, so hybrids are difficult to obtain. Therefore, I developed a method to obtain hybrid yeasts, based on color-coding and optical sorting of different yeasts, providing a promising approach to develop new non-genetically modified yeasts for the biotech industry.

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A key solution to grid congestion

On behalf of the TU Delft PowerWeb Institute, researchers Kenneth Brunninx and Simon Tindemans are handing over a Position Paper to the Dutch Parliament on 14 November 2024, with a possible solution to the major grid capacity problems that are increasingly cropping up in the Netherlands. The Netherlands is unlikely to meet the 2030 climate targets, and one of the reasons for this is that large industry cannot switch to electricity fast enough, partly because of increasingly frequent problems around grid capacity and grid congestion. In all likelihood, those problems will actually increase this decade before they can decrease, the researchers argue. The solution offered by the TU Delft PowerWeb Institute researchers is the ‘flexible backstop’. With a flexible backstop, the current capacity of the power grid can be used more efficiently without sacrificing safety or reliability. A flexible backstop is a safety mechanism that automatically and quickly reduces the amount of electricity that an electric unit can draw from the grid (an electric charging station or a heat pump) or deliver (a PV installation). It is a small device connected or built into an electrical unit, such as a charging station or heat pump, that ‘communicates’ with the distribution network operator. In case of extreme stress on the network, the network operator sends a signal to the device to limit the amount of power. Germany recently introduced a similar system with electric charging stations. The backstop would be activated only in periods of acute congestion problems and could help prevent the last resort measure, which is cutting off electricity to users. ‘Upgrading the electricity network remains essential, but in practice it will take years. So there is a need for short-term solutions that can be integrated into long-term planning. We, the members of the TU Delft PowerWeb Institute, call on the government, network operators and regulator to explore the flexible backstop as an additional grid security measure,’ they said. The entire Paper can be read here . Kenneth Brunninx Associate Professor at the Faculty of Engineering, Governance and Management, where he uses quantitative models to evaluate energy policy and market design with the aim of reducing CO2 emissions. Simon Tindemans is Associate Professor in the Intelligent Electrical Power Grids group at Faculty of Electrical Engineering, Mathematics and Computer Science. His research interests include uncertainty and risk management for power grids. TU Delft PowerWeb Institute is a community of researchers who are investigating how to make renewable energy systems reliable, future proof and accessible to everyone.

25 year celebration of formal collaboration between Delft University of Technology and the University of Campinas

On 25 October 2024 we celebrated 25 years of formal collaboration between Delft University of Technology and the University of Campinas. What began as a project to exchange some students in chemical engineering has now grown to a multifaceted and broad academic collaboration which accumulated into 24 joint research projects (>20 M Euro); 16 advanced courses and 15 Doctors with a Dual Degree PhD. Patricia Osseweijer, TU Delft Ambassador Brazil explained, “We are proud to show and reflect on this special day the added value we created resulting from our joint activities. The lessons we learned demonstrate that especially continuity of funds and availability for exchanges has contributed to joint motivation and building trust which created strong relations. This is the foundation for academic creativity and high-level achievements.” The program presented showcases of Dual Degree projects; research activities and education. It discussed the future objectives and new fields of attention and agree on the next steps to maintain and strengthen the foundation of strong relations. Telma Franco, Professor UNICAMP shared that “joint education and research has substantially benefitted the students, we see that back in the jobs they landed in,” while UNICAMP’s Professor Gustavo Paim Valenca confirmed that “we are keen to extend our collaboration to more engineering disciplines to contribute jointly to global challenges” Luuk van der Wielen highlighted that “UNICAMP and TU Delft provide valuable complementary expertise as well as infrastructures to accelerate research and innovation. Especially our joint efforts in public private partnerships brings great assets” To ensure our future activities both University Boards have launched a unique joint program for international academic leadership. This unique 7-month program will accommodate 12 young professors, 6 from each university. The programme began on 4 November 2024 in Delft, The Netherlands.

Christmas lunch

Take part in a festive lunch with MoTiv, TU Delft Studentenraad en TU Delft ESA This holiday season, MoTiv, TU Delft, and the local Delft churches are bringing together homes and students for a special, heartwarming experience, and we would love for you to be part of it! After three successful years, we’re excited to continue this festive tradition, bridging cultures and creating connections. Are you interested in joining a holiday lunch as a guest , along with other international students, in a welcoming Delft-area home? Or perhaps you’d like to open your home as a host , sharing a warm, cultural celebration with students from around the world? This special event will take place from December 23rd to December 31st, between 12:00 and 15:00 . For Guests : If you’d like to participate as a guest, we’ll match you with a local host eager to share their holiday traditions. You’ll enjoy delicious dishes, laughter, and meaningful conversations, creating memories that feel like home, even far from family. Once matched, we’ll connect you with your host so you can coordinate details and meal plans together. Sign up as a guest in this google forms.(https://forms.gle/yLAqE83DcqWGwcKB8) For Hosts : If you’re interested in hosting, this is a wonderful opportunity to welcome students into your home for a memorable meal. By sharing food, stories, and perhaps even a few games, you’ll help make the season brighter for students eager to experience Dutch hospitality and holiday traditions. Sign up as a host in this google forms.( https://forms.gle/bJB5svxJZ1iTSF1c6 ) For any questions, feel free to reach out to us at motiv.connects@gmail.com. For more information, please visit our website at www.motiv.tudelft.nl/christmas-lunch-delft/ . Thank you for making this holiday season unforgettable. We look forward to celebrating with you! Warm regards, MoTiv, TU Delft Student Council, TU Delft ESA - Student Community Team