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e-Refinery lunch lecture | Theoretical studies of the mechanism of C1 and C2 product formation in CO2 electrochemical reduction

e-Refinery lunch lecture | Theoretical studies of the mechanism of C1 and C2 product formation in CO2 electrochemical reduction 05 December 2024 12:45 till 13:45 | Add to my calendar By Hannes Jónsson Professor at Faculty of Physical Chemistry, University of Iceland Results of atomic scale calculations are presented on the electrochemical reduction of CO2 (CO2RR) and the competing hydrogen evolution reaction (HER) at various metal surfaces, in particular copper, silver and platinum. The calculations include evaluation of the activation energy of the various elementary steps as a function of applied voltage based on methods for finding saddle points on the energy surface to identify transition states of the possible elementary steps. The energy and atomic forces are calculated using density functional theory (DFT). At copper and silver electrodes, CO2RR becomes more facile than HER within a certain window of applied voltage, while HER is always preferred at platinum electrodes [1,2]. While formate is thermodynamically preferred, silver electrodes have high selectivity for CO, and copper electrodes produce both with almost the same onset potential [3]. CO can be further reduced at copper electrodes, and C-C bond formation can occur on Cu(100) without overcoming the rate limiting step for methane formation. Efforts have been made to enhance the reactivity and/or selectivity of copper electrodes by adding more reactive transition metal impurities. Calculations of CO adsorption on such surfaces reveal the adsorption of multiple CO molecules on a single impurity atom [4]. The recent CO2RR and HER calculations have mostly been carried out by explicitly including only a few water molecules around the reacting surface species while the rest of the liquid phase has been described using an implicit solvent approach. Proper inclusion of a liquid electrolyte at the surface of the electrode at a given applied voltage is a significant challenge as it makes the DFT computational effort large. A brief presentation will be given of ongoing efforts to develop a hybrid simulation approach where the liquid electrolyte is fully represented. [1] M. Re Fiorentin, F. Risplendi, C. Salvini, J. Zeng, G. Cicero and H. Jónsson, J. Phys. Chem. Letters 15, 11538 (2024). [2] J. Husssain, H. Jónsson and E. Skúlason, ACS Catalysis 8, 5240 (2018). [3] M. Van den Bossche, C. Rose-Petruck, and H. Jónsson, J. Phys. Chem. C 125, 13802 (2021). Register here Date: Thursday December 5 Time: 12:45 - 13:45 h (CET) Register before Dec 4, 9AM Location will be sent after registration

Bridging to the MSc

If your Dutch academic bachelor does not sufficiently match the master’s programme of your choice, then you can, in some cases, start your master’s programme after following a bridging programme. An hbo bachelor’s degree does not give direct access to TU Delft’s master’s programmes. If you have completed a relevant hbo bachelor’s programme, then you will have to finish a bridging programme before you can start a master’s programme at TU Delft. On the MSc programme pages you will find information about eligibility for the bridging programme. Here you will also find if the programme has programme specific requirements. The contents of the bridging programme differs per master’s programme. You will determine the contents of the bridging programme together with the bridging programme coordinator of the study programme of your choice. For more information about general admission requirements, about deadlines, application and enrolment and about general terms and conditions, click on the tabs below. Admission requirements Deadlines, application and enrolment Costs and payment General terms and conditions Vwo level wiskunde B You must have vwo level wiskunde B. If you have a vwo diploma with wiskunde B, then you meet this requirement. We also accept a vwo certificate through the staatsexamen . The staatsexamen takes place once a year. Please find the exam dates on DUO’s website. The application deadline for the staatsexamen is before January 1st. If you don’t have a vwo diploma with wiskunde B or a vwo wiskunde B certificate through the staatsexamen, then, alternatively, you may obtain a vwo level certificate at one of the following institutions: Boswell-Beta in Utrecht; Het Korteweg-de Vries Insituut in Amsterdam; Centrale Commissies Voortentamen - CCVX . Please note that from the 2025-2026 academic year onward, certificates obtained at Het Korteweg de Vries Instituut in Amsterdam will no longer be accepted. This includes certificates obtained before the 2025-2026 academic year. Vwo level English You must have vwo level English. If you have a vwo diploma, then you meet this requirement. We also accept a vwo certificate through the staatsexamen . The staatsexamen takes place once a year. Please find the exam dates on DUO’s website. The application deadline for the staatsexamen is before January first. If you don’t have a vwo diploma or a vwo certificate for English, then, alternatively, you may obtain one of the following certificates with the required minimum scores:” TOEFL iBT certificate : a total score of at least 100 with sub scores of at least 22 on each part of the test. TU Delft does not accept TOEFL MyBest scores. The required minimum scores must be obtained in one single test. IELTS certificate : a total score of at least 7.0 on the Academic test with sub scores of at least 6.5 on each part of the test. The required minimum scores must be obtained in one single test. We do accept sufficient scores obtained through the de IELTS One Skill Retake. Certificate of Proficiency in English (C2) or Certificate in Advanced English (C1) (University of Cambridge): a total score of at least 185. Share your University of Cambridge Certificate with us . If on the day you submit your application your language certificate is over two years old, it will not be accepted. We do not accept online tests. If international students cannot take one of the above tests, because test centres are closed or unavailable due to safety conditions in their country, they will be allowed to take the TOEFL iBT Home Edition test. We do not accept the IELTS Indicator test or The IELTS Online (Academic) test. Do you have dyslexia? Then please ask the test organisation where you will take your English test well in advance, about accommodations for test takers with dyslexia. TU Delft does not accept test results that do not meet the minimum score requirements, regardless of a “dyslexieverklaring”. Exemption You will be exempted from taking one of the tests if one of the following situations applies to you: Your bachelor’s programme is taught completely in English. Please submit proof of this ( contactcentre-esa@tudelft.nl ) when applying. You are a national citizen of Australia, Canada, Ireland, New Zealand, the United Kingdom, or the U.S.A. Sufficient Dutch language proficiency If your previous education prior to your Dutch university bachelor's degree was completed abroad, then a Dutch language requirement applies. This counts for Dutch-language bridging programmes (when the bachelor’s programme has Dutch as its language of instruction). Please click here to see the requirements. Bridging programmes that start in September Most of TU Delft’s bridging programmes start in September, with the following exceptions: Industrial Design Engineering only offers a bridging programme that starts on February 1st. Architecture offers a bridging programme that starts on February 1st (30 or 60 ECTS) and a bridging programme that starts on September 1st (60 ECTS). Apply for a bridging programme that starts in September as follows: Before July 1st: Apply in Studielink. In Studielink, select the bridging programme of your choice at TU Delft. After applying in Studielink you will receive a student number per email. Always mention your student number in emails to TU Delft. Note that we cannot start processing your application and documents until you have applied in Studielink. Arrange your bridging programme with the bridging programme coordinator and send in the “rapportageformulier”. Send an email to the programme’s bridging programme coordinator in which you ask to arrange a bridging programme. In your email, please mention: The name of your hbo or academic bachelor and the name of the educational institution where you follow(ed) the programme. The name of the bridging programme of your choice. If you will be accepted into the bridging programme, then fill in the “ rapportageformulier ” together with the bridging coordinator. Open the form in Adobe Acrobat Reader or Acrobat Fill and Sign. The form should be completed and filled out by student and bridging programme coordinator and sent to contactcentre-esa@tudelft.nl in PDF, before the abovementioned date. Note: If you filled out a rapportageformulier last year, but ultimately did not enrol, then please fill out a new rapportageformulier if you want to start the coming academic year. Well before September 1st: Meet the admission requirements for English and wiskunde B . If you have deficiencies for English and/or wiskunde B, then register for tests well in advance. Preparing for and planning wiskunde B and/or English tests can take a lot of time. Take into account that the time it will take for you to receive the test results can differ per test organisation. Also, for some, a resit may be necessary. Send your certificates to contactcentre-esa@tudelft.nl in PDF-format. The certificates must be obtained before September 1st to be allowed to enrol on September 1st in that same year. If you are unable to enrol in the bridging progamme, please withdraw your application in Studielink before September 1st. Bridging programmes that start in February (Architecture and Industrial Design Engineering) Only Architecture and Industrial Design Engineering offer bridging programmes that start in February. Architecture offers the 30 ECTS bridging programme starting in February. This programme is only offered once a year. The 60 ECTS programme is offered with a starting date of February 1st and September 1st. Apply for a bridging programme that starts in February as follows: Before December 1st: Apply in Studielink. In Studielink, select the bridging programme of your choice at TU Delft. After applying in Studielink you will receive a student number per email. Always mention your student number in emails to TU Delft. Note that we cannot start processing your application and documents until you have applied in Studielink. Arrange your bridging programme with the bridging programme coordinator and send in the “rapportageformulier”. Send an email to the programme’s bridging programme coordinator in which you ask to arrange a bridging programme. In your email, please mention: The name of your hbo or academic bachelor and the name of the educational institution where you follow(ed) the programme. The name of the bridging programme of your choice. If you will be accepted into the bridging programme, then fill in the “ rapportageformulier ” together with the bridging coordinator. Open the form in Adobe Acrobat Reader or Acrobat Fill and Sign. The form should be completed and filled out by student and bridging programme coordinator and sent to contactcentre-esa@tudelft.nl in PDF, before the abovementioned date. Note: If you filled out a rapportageformulier last year, but ultimately did not enrol, then please fill out a new rapportageformulier if you want to start the coming academic year. Well before December 1st: Meet the admission requirements for English and wiskunde B . If you have deficiencies for English and/or wiskunde B, then register for tests well in advance. Preparing for and planning wiskunde B and/or English tests can take a lot of time. Send your certificates to contactcentre-esa@tudelft.nl in PDF-format. The certificates must be obtained before December 1st to be allowed to enrol on February 1st in that same year. If you are unable to enrol in the bridging progamme, please withdraw your application in Studielink before February 1st. Changes in your bridging courses Does something change in your courses after you have started the bridging programme? Then fill in the “wijzigingsformulier” together with the bridging programme coordinator . Please fill in the form for the year in which you started the programme: either the wijzigingsformulier 2022-2023 or wijzigingsformulier 2023-2024 or wijziginsformulier 2024-2025 . Open the form in Adobe Acrobat Reader or Acrobat Fill and Sign. Send the completed form to contactcentre-esa@tudelft.nl . Students who follow a bridging programme pay a one-time bridging fee before the start of the programme. The bridging fee is a proportional part of the statutory tuition fee and depends on the number of ECTS in your bridging programme. In other words, you pay for the number of ECTS in your bridging programme. The amount of the statutory tuition fee changes annually, which means that so does the amount of the bridging fee per ECTS. Please see Tuition Fee & Finances (tudelft.nl) for all information about payment deadlines, payment methods, etc. Enrolment for a bridging programme is for a maximum of 1 year.* If you are taking the bridging programme during your bachelor enrolment is for a maximum of 2 years. It is not possible to switch to a different bridging programme during the study year. If you don’t complete a bridging programme within the set amount of time, you cannot enrol for a similar bridging programme at TU Delft. ( You are allowed to start a maximum of 2 separate bridging programmes in total) You pay the fee for your bridging programme once, even if courses are not taken or results are not obtained, the fee is non refundable. If you are given an exemption for a course that is in your bridging programme, the result will be on your transcript as an exemption, the course is not taken out of the programme. There is no refund for the credits of this course. If you withdraw from the bridging programme, the fee will not be refunded. If you are paying in instalments the remainder of the fees will be withdrawn from your account at once after the withdrawl from the programme. If in addition to your bridging programme you are also enrolled in a bachelor’s or master’s programme, then you pay tuition fee to the educational institution where you are following your bachelor’s or master’s programme and will get an exemption from payment for the bridging fee. Please check how to get the exemption from payment here , at “Payment methods-Exemption from payment”. Note that as soon as you terminate your enrolment from the bachelor’s or master’s programme, you are no longer entitled to the exemption and will pay a bridging fee for the remaining months of the academic year. You will be enrolled as a bridging student at TU Delft, only after you meet the admissions requirements and fulfil your payment obligation before our deadlines. * For students starting in September 2025 (for students that started before September 2025 it is still maximum 2 years) Contact If you have any questions about the information above, please contact contactcentre-esa@tudelft.nl .

People

Professors Schouten, prof. dr. ir. A.C. (Alfred) Head of Department T T Breedveld, prof. dr. ir. P. (Paul) Medical instruments & Bio-Inspired Design Dankelman, prof. dr. ir. J. (Jenny) Medical Instruments & Bio-Inspired Design Dobbelsteen, prof. dr. ir. J.J. (John) van den Medical Instruments & Bio-Inspired Technology Helm, prof. dr. ir. F.C.T. (Frans) van der Biomechatronics & Human-Machine Control Vallery, prof. dr. ir. H. (Heike) Biomechatronics & Human-Machine Control Veeger, prof. dr. ir. H.E.J. (DirkJan) Biomechatronics & Human-Machine Control T Zadpoor, prof. dr. ir. A.A. (Amir) Biomaterials & Tissue Biomechanics Associate Professors Apachitei, dr. ir. I. (Julian) Biomaterials & Tissue Biomechanics T Dodou, dr. ir. D. (Dimitra) Medical Instruments & Bio-Inspired Technology T Fratila-Apachitei, dr.ir. E.L. (Lidy) Biomaterials & Tissue Biomechanics T Gijsen, dr. ir. F.J.J.H. (Frank) Medical Instruments & Bio-Inspired Technology T Seth, dr.ir. A. (Ajay) Biomechatronics & Human-Machine Control T Smit, dr. ir. G. (Gerwin) Medical Instruments & Bio-Inspired Technology T Stienen, dr. ir. A.H.A. (Arno) Biomechatronics & Human-machine Control Zhou, dr. ir. J. (Jie) Biomaterials & Tissue-Biomechanics T Assistant Professors Akyildiz, dr. ir. A.C. (Ali) Medical Instruments & Bio-Inspired Technology Fereidoonnezhad, dr. ir. B. (Behrooz) Medical Instruments & Bio-Inspired Technology Horeman-Franse, dr.ir.ing T. (Tim) Medical Instruments & Bio-Inspired Technology T Kruk, van der dr. ir. E. (Eline) Biomechatronics & Human Machine Control T Loeve, dr. ir. A.J. (Arjo) Medical Instruments & Bio-Inspired Technology T Mirzaali, dr. ir. M.J. (Mohammad) Biomaterials & Tissue Biomechanics T Moore, dr. J.K. (Jason) Biomechatronics & Human-Machine Control T Mugge, dr. ir. W. (Winfred) Biomechatronics & Human-Machine Control T Oosting, dr. ir. R.M. (Roos) Medical Instruments & Bio-Inspired Technology T: Peirlinck, dr.ir. M. (Mathias) Medical Instruments & Bio-Inspired Technology T Pirola, dr. ir. S. (Selene) Medical Instruments & Bio-Inspired Technology Ruit, dr.ir. M.L. van der (Mark) Biomechatronics & Human-Machine Control Sakes, dr. ir. A. (Aimée) Medical Instruments & Bio-Inspired Technology T Tas, dr. ir. R.P. (Roderick) Biomaterials & Tissue Biomechanics T Tümer, dr. ir. N. (Nazli) Biomaterials & Tissue Biomechanics T Parttime Professors Elst, prof. dr. M. (Maarten) van der Biomechanical Engineering T T Hendriks, prof. dr. B.H.W. (Benno) Medical Instruments & Bio-Inspired Technology Kooij, prof. dr. H. (Herman) van der Biomechatronics & Human-Machine Control T Weinans, prof.dr. H.H. (Harrie) Biomaterials & Tissue Biomechanics T Teachers Groenhuis, ir J.D.C. (Jan) BioMechanical Engineering Jong, ir. P.H. (Pier) de BioMechanical Engineering Rademaker, ir. S.L.J. (Suzanne) BioMechanical Engineering T Vliet, ir. B. (Bob) van Medical Instruments & Bio-Inspired Technology T Researchers Chaurasia V. (Vikash) Biomechatronics & Human-machine Control T: Frassini, E. (Emanuele) Medical Instruments & Bio-Inspired Technology T Mulligan, M. (Matthew) Biomechatronics & Human-machine Control T: Klok, J.W.A. (Jan-Willem) Medical Instruments & BioInspired Technology T: Kevopoulos, K. (Konstantinos) Medical instruments & Bio-Inspired Design T: Lauber, M. (Marin) Medical Instruments & Bio-Inspired Technology (T:) Osouli, K. (Kasra) Medical Instruments & Bio-Inspired Technology T: Putra, dr. ir. N.E. (Niko) Biomaterials & Tissue Biomechanics T Wal, dr. ir. M.J. (Marije) ter Biomechatronics & Human-machine Control T: Wouwe, T. (Tom) van Biomechatronics & Human-machine Control T: PhD Candidates A.M.A.A. Al-Sanea (Abdulrahman) Biomaterials & Tissue Biomechanics T: Bloemberg, ir. J. (Jette) Medical Instruments & Bio-Inspired Technology T Byrne, G. (Gavin) Medical Instrument & Bio-Inspired Technology T Cardona, ir. S.C. (Sara) Medical Instruments & Bio-Inspired Technology Cappelli, G. (Giacomo) Biomaterials & Tissue Biomechanics T: Cueto Fernandez, ir. J. (Judith) Biomechatronics & Human-machine Control T Cardozo Blanco - Duijvelshoff, J.L. (Jamie) Biomechatronics & Human-machine Control Eijkel, ir. B.I.M. (Dirk) Biomaterials & Tissue Biomechanics T Fontana, ir. F. (Federica) Medical Instruments & Bio-Inspired Technology Gonzalez Toledo, B.E. (Benjamin) Biomechatronics & Human-Machine Control T: Hörmann, S.J. (Sabrina) Biomechatronics & Human-machine Control T: Hutchinson, ir. K. (Kim) Medical Instruments & Bio-Inspired Technology T: Jongbloed, ir. K. (Koen) Biomechatronics & Human-machine Control T Khalid Hassan Abubakr, D. (Dina) Medical Instruments & Bio-Inspired Technology T: Kortman, ir. V.G. (Vera) Medical Instruments & Bio-Inspired Technology T: Krijnen, ir. R.P.K. (Rogier) Medical Instruments & Bio-Inspired Technology T: Kunkels, ir. L.B. (Lorenzo) Biomaterials & Tissue Biomechanics T: Kyriazis, ir. I. (Ioannis) Biomechatronics & Human-machine Control T: Lamesgin, H.B. (Haymanot) Medical Instruments & Bio-Inspired Technology T: Maga, ir. L. (Ludovica) Medical Instrument & Bio-Inspired Technology P Mooij, I. (Indra) Biomaterials & Tissue Biomechanics T: Osman, ir. H.K.H.W. (Hassan) Biomechatronics & Human-Machine Control T Pfeifer, J. (Jenna) Medical Instruments & Bio-Inspired Technology T: Ramya, P. (Pritesh) Medical Instruments & Bio-Inspired Technology T: Rukundo, J.D.D. (Jean) Medical Instruments & Bio-Inspired Technology T: Ruzzier, A. (Alessia) Medical instruments & Bio-Inspired Design T: Šalandová, ir. M. (Monika) Biomaterials & Tissue Biomechanics T: Schmidt, ir. C.M. (Christoph) Biomechatronics & Human-machine Control T Schouten, ir. A.M. (Anneke) Medical Instruments & Bio-Inspired Technology T Schouten, ir. K. (Koen) Medical Instruments & Bio-Inspired Technology T Straathof, ir. R. (Robin) Medical Instruments & Bio-Inspired Technology T Tay, ir. E.W.S. (Edwin) Biomaterials & Tissue Biomechanics T Thomassen, ir. K.E. (Karin) Medical Instruments & Bio-Inspired Technology Verhülsdonk, ir. D. (Daniel) Medical Instruments & Bio-Inspired Technology T: Welle, C.S. (Karien) ter Biomechatronics & Human-Machine Control T: White, ir. N.A (Nick) Medical Instruments & Bio-Inspired Technology T Zhang, ir. N. (Nianlei) Medical Instruments & Bio-Inspired Technology T: Zanten, J.C. van (Jonathan) Biomechatronics & Human-Machine Control T: Zou, S. (Shibo) Medical instruments & Bio-Inspired Design T: Supporting Staff Simon, T. (Tamas) Department manager BioMechanical Engineering Boekhoud-Deegeling B. (Brenda) Secretariat Clinical Technology T T van Haver - Plas, J. (Janneke) Secretariat T: T: Rijnvis-Lebbing, S. (Sindy) Secretariat Clinical Technology T T Schol, A. (Amanda) Secretariat T T Stegweg, M. (Marjolijn) Secretariat T T Timmerman, A. (Angelique) Secretariat T T Adrichem, J.A. (Jorik) van Support/BioMechanical Engineering Bos, P. (Pepijn) van den Support/BioMechanical Engineering Software Scientist Kewley, A. (Adam) Support/BioMechanical Engineering Software Scientist Walraven, dr. M. (Mariëlle) Support/BioMechanical Engineering T Anker, ir. T.A. (Thomas) O&O Technician BioMechanical Engineering T: Frankenhuijzen, ir. J. (Jan) van O&O Technician BioMechanical Engineering Klimopoulou, M. (Maria) Biotechnician Biomaterials & Tissue Biomechanics T Leeflang, ir. M.A. (Sander) O&O Technician Biomaterials & Tissue Biomechanics T Zanten, ir. L.J. (Lennart) van O&O Technician Biomaterials & Tissue Biomechanics

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Students Amos Yusuf, Mick Dam & Bas Brouwer winners of Mekel Prize 2024

Master students Amos Yusuf, from the ME faculty (Mick Dam, from the EEMCS faculty and graduate Bas Brouwer have won the Mekel Prize 2024 for the best extra scientific activity at TU Delft: the development of an initiative that brings master students into the classroom teaching sciences to the younger generations. The prize was ceremonially awarded by prof Tim van den Hagen on 13 November after the Van Hasselt Lecture at the Prinsenhof, Delft. They received a statue of Professor Jan Mekel and 1.500,- to spend on their project. Insights into climate change are being openly doubted. Funding for important educational efforts and research are being withdrawn. Short clips – so called “reels” – on Youtube and TikTok threaten to simplify complex political and social problems. AI fakes befuddle what is true and what is not. The voices of science that contribute to those discussion with modesty, careful argument and scepticism, are drowned in noise. This poses a threat for universities like TU Delft, who strive to increase student numbers, who benefit from diverse student populations and aim to pass on their knowledge and scientific virtues to the next generation. It is, therefore, alarming that student enrolments to Bachelor and Master Programs at TU Delft have declined in the past year. Students in front of the class The project is aimed to make the sciences more appealing to the next generation. They have identified the problem that students tend miss out on the opportunity of entering a higher education trajectory in the Beta sciences – because they have a wrong picture of such education. In their mind, they depict it as boring and dry. In his pilot lecture at the Stanislas VMBO in Delft, Amos Yusuf has successfully challenged this image. He shared his enthusiasm for the field of robotics and presented himself as a positive role model to the pupils. And in return the excitement of the high school students is palpable in the videos and pictures from the day. The spark of science fills their eyes. Bas Brouwer Mick Dam are the founders of NUVO – the platform that facilitates the engagement of Master Students in high school education in Delft Their efforts offer TU Delft Master Students a valuable learning moment: By sharing insights from their fields with pupils at high school in an educational setting, our students can find identify their own misunderstandings of their subject, learn to speak in front of non-scientific audiences and peak into education as a work field they themselves might not have considered. An extraordinary commitment According to the Mekel jury, the project scored well on all the criteria (risk mitigation, inclusiveness, transparency and societal relevance). However, it was the extraordinary commitment of Amos who was fully immersed during his Master Project and the efforts of Brouwer and Dam that brought together teaching and research which is integral to academic culture that made the project stand out. About the Mekel Prize The Mekel Prize will be awarded to the most socially responsible research project or extra-scientific activity (e.g. founding of an NGO or organization, an initiative or realization of an event or other impactful project) by an employee or group of employees of TU Delft – projects that showcase in an outstanding fashion that they have been committed from the beginning to relevant moral and societal values and have been aware of and tried to mitigate as much as possible in innovative ways the risks involved in their research. The award recognizes such efforts and wants to encourage the responsible development of science and technology at TU Delft in the future. For furthermore information About the project: https://www.de-nuvo.nl/video-robotica-pilot/ About the Mekel Prize: https://www.tudelft.nl/en/tpm/our-faculty/departments/values-technology-and-innovation/sections/ethics-philosophy-of-technology/mekel-prize

New catheter technology promises safer and more efficient treatment of blood vessels

Each year, more than 200 million catheters are used worldwide to treat vascular diseases, including heart disease and artery stenosis. When navigating into blood vessels, friction between the catheter and the vessel wall can cause major complications. With a new innovative catheter technology, Mostafa Atalla and colleagues can change the friction from having grip to completely slippery with the flick of a switch. Their design improves the safety and efficiency of endovascular procedures. The findings have been published in IEEE. Catheter with variable friction The prototype of the new catheter features advanced friction control modules to precisely control the friction between the catheter and the vessel wall. The friction is modulated via ultrasonic vibrations, which overpressure the thin fluid layer. This innovative variable friction technology makes it possible to switch between low friction for smooth navigation through the vessel and high friction for optimal stability during the procedure. In a proof-of-concept, Atalla and his team show that the prototype significantly reduces friction, averaging 60% on rigid surfaces and 11% on soft surfaces. Experiments on animal aortic tissue confirm the promising results of this technology and its potential for medical applications. Fully assembled catheters The researchers tested the prototype during friction experiments on different tissue types. They are also investigating how the technology can be applied to other procedures, such as bowel interventions. More information Publicatie DOI : 10.1109/TMRB.2024.3464672 Toward Variable-Friction Catheters Using Ultrasonic Lubrication | IEEE Journals & Magazine | IEEE Xplore Mostafa Atalla: m.a.a.atalla@tudelft.nl Aimee Sakes: a.sakes@tudelft.nl Michaël Wiertlewski: m.wiertlewski@tudelft.nl Would you like to know more and/or attend a demonstration of the prototype please contact me: Fien Bosman, press officer Health TU Delft: f.j.bosman@tudelft.nl/ 0624953733

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.