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Creating Order in Chaos: Data Visualization

Thomas Höllt was interviewed about his research on data visualization which can be found here: https://www.tudelft.nl/en/stories/articles/creating-order-in-chaos-data-visualization .

Thesis bootcamp

Make some headway on your thesis. Make some headway on your thesis. Spend 2 days working on your thesis with other thesis writers under guidance of TUDelft Writing Coaches.

Near-Unity Photoluminescence Quantum Yield of Core-Only InP Quantum Dots via a Simple Postsynthetic InF3 Treatment

Quantum dots (QDs) are luminescent nanomaterials with size-dependent properties, high efficiency, and pure color. These properties make QDs suitable for a wide range of optoelectronic applications, such as displays, solar cells, and bioimaging. InP QDs are considered as the next generation of QDs because they comply with EU safety regulations. Until now, the efficiency of InP QDs without additional capping material has not been high enough to meet application requirements. With our developed treatment using InF3, we reach near unity efficiency for InP QDs. The treatment is applicable to InP from different sizes and made via different synthesis methods making it valuable for all kinds of applications. Maarten Stam, Guilherme Almeida, Reinout F. Ubbink, Lara M. van der Poll, Yan B. Vogel, Hua Chen, Luca Giordano, Pieter Schiettecatte, Zeger Hens and Arjan J. Houtepen Abstract Indium phosphide (InP) quantum dots (QDs) are considered the most promising alternative for Cd and Pb-based QDs for lighting and display applications. However, while core-only QDs of CdSe and CdTe have been prepared with near-unity photoluminescence quantum yield (PLQY), this is not yet achieved for InP QDs. Treatments with HF have been used to boost the PLQY of InP core-only QDs up to 85%. However, HF etches the QDs, causing loss of material and broadening of the optical features. Here, we present a simple postsynthesis HF-free treatment that is based on passivating the surface of the InP QDs with InF3. For optimized conditions, this results in a PLQY as high as 93% and nearly monoexponential photoluminescence decay. Etching of the particle surface is entirely avoided if the treatment is performed under stringent acid-free conditions. We show that this treatment is applicable to InP QDs with various sizes and InP QDs obtained via different synthesis routes. The optical properties of the resulting core-only InP QDs are on par with InP/ZnSe/ZnS core–shell QDs, with significantly higher absorption coefficients in the blue, and with potential for faster charge transport. These are important advantages when considering InP QDs for use in micro-LEDs or photodetectors. Maarten Stam Arjan Houtepen Read the publication here
Close up of Antarctic ice shelves

Gauging Antarctica’s sponginess from space

The Antarctic climate and ecosystem are changing rapidly, raising many questions. CEG researchers under the direction of Bert Wouters, received a grant from the Durch Research Council for more detailed Antarctic into firn, the compacted thick snow layer on Antarctic ice shelves. Firn acts as sponge, storing water when the surface melts. Climate change is reducing its ‘sponginess’, so that it can store less meltwater. If too much water collects at the surface, cracks in the ice can form and increase the risk of ice shelf collapse. The team will be heading to the George VI Ice Shelf on Antarctica to collect field measurements of the snow pack and combine them with satellite observations and model data to figure out how much more melt water Antarctica’s ice shelves can take. This will help to better understand how Antarctica will cope with global warming. Read more about the research grants from the Dutch research council here .

Summer School for Teaching Assistants

Are you a (new) Teaching Assistant? Starting July 2, enrol in the Teaching Assistants training and learn how to motivate your students, answer questions and give feedback in the best way possible. Meet other TAs to practice, discuss your worries and share your ideas!

Designing and Teaching an Online Course

Starting September 17, learn how to teach and design an online course during an
engaging 6 weeks experience.

Lea Hartmeyer one of the four winners Archiprix 2024

On Sunday, 16 June, an independent jury announced the winners of the National Archiprix 2024. Alumna Lea Hartmeyer of the Master Track Landscape Architecture is one of the four winners with ‘The Forest Formerly Known as… Parkstad’. Julia Ravensbergen (Building Technology) and Jakub Biernacki (Architecture) received honourable mentions.

A phase inversion strategy enables thicker NMC811 electrodes for high-energy density Li-ion batteries.

Increasing the electrode thickness, thereby reducing the proportion of inactive cell components, is one way to achieve higher-energy-density lithium-ion batteries. However, when thicker electrodes are produced using the state-of-the-art slurry casting/drying procedure, this results in higher electronic and ionic overpotentials and/or mechanical failure induced by binder migration. Ethanol-induced phase inversion can effectively address these issues, as the inclusion of this processing step can produce robust, thick battery electrodes with improved electrochemical performance. These electrodes achieve higher available storage capacity per square centimeter and volume, using proven scalable technologies. Pranav Karanth, Mark Weijers, Pierfrancesco Ombrini, Davide Ripepi, Frans Ooms e Fokko M. Mulder A recent publication describing how these high capacity electrodes were obtained and tested electrochemically can be found in: A phase inversion strategy for low-tortuosity and ultrahigh-mass-loading nickel-rich layered oxide electrodes: Cell Reports Physical Science H2020 project ‘SOLIDIFY’ Within the H2020 Solidify consortium comprised of, among others, IMEC, EMPA, Fraunhofer, VDL, Umicore, and TU Delft, research was performed to arrive at high energy density solid-state lithium-metal batteries. The phase inversion-based NMC-811 cathodes that were developed by researchers at MECS/ ChemE/ TNW have been selected for the demonstrators resulting from the project, where these electrodes are infiltrated with the solid electrolyte precursor to arrive at a solid cathode composite, and then combined with a thin solid-electrolyte separator and a lithium metal anode. Pranav Karanth Mark Weijers Fokko Mulder Read the publication here

Fading boundary between farmers and tigers

The geothermal energy well at TU Delft campus will soon start heating various buildings on campus and in the city of Delft. But it provides insufficient heat in winter, and excessive heat in summer. Adding underground seasonal storage allows surplus summer heat to be put to good use in winter. Martin Bloemendal and his team develop the means to make integration of such an underground seasonal buffer possible at a large scale.

Boosting the Cyber Security of European Power Grids

The increasing digitization of the power grid has brought about numerous benefits in sustainability, but it has also made the grid more susceptible to cyber threats. To address this challenge, the non-profit member organization dedicated to improving power grid security, ENCS, has joined forces with TU Delft's Control Room of the Future, signing a Memorandum of Understanding on June 12, 2024.

Theory results in fanatic race during the Maritime Engineering Design Day

Around 55 first-year students in the Maritime Engineering bachelor programme introduced their parents and other interested parties to the department and its programme during Design Day. After an opening session where the parents accompanied by students were briefed on the theory, they were soon able to roll up their sleeves and get to work. They even had the opportunity to build their own floating structure!

A route to scalable Majorana qubits

Researchers at QuTech have found a way to make Majorana particles in a two-dimensional plane. This was achieved by creating devices that exploit the combined material properties of superconductors and semiconductors. The inherent flexibility of this new 2D platform should allow one to perform experiments with Majoranas that were previously inaccessible. The results are published in Nature.

IDE in the Media (Week 24 2024)

Learn more about our research, education, and staff through these articles.

IDE Publication Highlights (Week 24 2024)

IDE researchers have been hard at work getting their research published. This week’s highlights include a paper from IDE assistant professor Christina Schneegass that contributes a vision of how neurotechnology will transform Human-Computer Interaction (HCI) research and practice.

Advancing the painting industry by exploring the design of smart agents

Over the past year, Marco Rozendaal, Nazli Cila, and Jordan Boyle have been collaborating with the SUSAG Foundation to advance the professional painting industry by exploring the design and implementation of smart agents, like robots, exoskeletons, and intelligent equipment. In partnership with MUZUS and many students from IDE, they have conducted research, developed innovative concepts, and created a comprehensive roadmap for the industry’s future.

Gijs Huisman receives NWO grant for research on dark haptics

Can technology deceive us through our sense of touch? And if so, how much do we mind? Dark design patterns are tricks in apps and websites that prompt us to do things we don't really want, such as quickly clicking ‘accept all’ on a cookie notification. Gijs Huisman: ‘The aim of my research is to be able to better recognise misleading designs in the future and more ideally avoid them.’

Professor Elvin Karana announces new Centre of Design Research for Regenerative Material Ecologies

Microbes are the most abundant and substantial group of organisms on the planet. And thanks to Professor Elvin Karana, they are now also a full part of the IDE research realm. On Wednesday 5 June Professor Karana gave her Inaugural Speech and kicked off the Centre of Design Research for Regenerative Material Ecologies (DREAM). “We continue to explore how we can embed living system thinking in material-driven design for planetary wellbeing.”

NWO grant for new radiotherapy to reduce side effects and improve cure rates

TU Delft, Erasmus MC and University of Lausanne have received a 1 million grant to develop a new treatment using electrons called VHEE: Very High Energy Electron.

Rewind to the Iron Age

Reproducing a 3,000-year-old sword for your graduation project. Materials Science & Engineering student Dorien Westert is combining archaeology and materials science by studying the microstructure of iron swords. In the process, she may learn more about how people lived in the early Iron Age.

NWO Award for Deepti Adlakha and Marie Curie Grant for Henriette Bier

Two researchers at our faculty have received a personal grant for their research proposals. First, Deepti Adlakha receives an NWO Open Science - XS award for research on the effectiveness of City climate action plans. Henriette Bier receives a Marie Curie Grant for ArchiSpace, research that aims to develop reliable and safe extraterrestrial settlements.