Latest news with #TU Delft
Yahoo
07-07-2025
- Science
- Yahoo
Quantum twist: In a first, magnet-free spin transport achieved in graphene
A team of researchers has managed to generate and detect spin currents in graphene without using any external magnetic fields for the very first time, successfully addressing a long-standing challenge in physics. The development could play an important role in the evolution of next-generation quantum devices. Special spin currents are a key ingredient in spintronics, a new kind of technology that uses the spin of electrons, instead of electric charge, to carry information. Spintronics promises ultrafast, super energy-efficient devices than today's electronics, but making it work in practical materials like graphene has been difficult. "In particular, the detection of quantum spin currents in graphene has always required large magnetic fields that are practically impossible to integrate on-chip," said Talieh Ghiasi, lead researcher and a postdoc fellow at Delft University of Technology (TU Delft) in Netherlands. However, in their latest study, Ghiasi and his team have now shown that by placing graphene on a carefully chosen magnetic material, they can trigger and control quantum spin currents without magnets. This discovery could pave the way for ultrathin, spin-based circuits and help bridge the gap between electronics and future quantum technologies. To understand what makes this research special, it's pertinent to know that the team was trying to create the quantum spin Hall (QSH) effect. This is a special state where electrons move only along the edges of a material, and their spins point in the same direction. The motion is smooth and doesn't get scattered by tiny imperfections, a dream scenario for making efficient, low-power circuits. However, until now, making graphene show this effect required applying strong magnetic fields. Instead of forcing graphene to behave differently with magnets, the researchers took a different approach. They placed a sheet of graphene on top of a layered magnetic material called chromium thiophosphate (CrPS₄). This material naturally influences nearby electrons through what scientists call magnetic proximity effects. When graphene is stacked on CrPS₄, its electrons start to feel two key forces; spin-orbit coupling (which ties an electron's motion to its spin) and exchange interaction (which favors certain spin directions). These forces open up an energy gap in graphene's structure and lead to the appearance of edge-conducting states, which is a sign of the QSH effect. The researchers confirmed that spin currents were flowing along the graphene's edges and stayed stable across distances of tens of micrometers, even in the presence of small defects. They also noticed something unexpected, an anomalous Hall (AH) effect, where electrons are deflected to the side even without an external magnetic field. Unlike the QSH effect, which they observed at low (cryogenic) temperatures, this anomalous behavior persisted even at room temperature. "The detection of the QSH states at zero external magnetic field, together with the AH signal that persists up to room temperature, opens the route for practical applications of magnetic graphene in quantum spintronic circuitries," the study authors note. The stable, topologically protected spin currents could be used to transmit quantum information over longer distances, possibly connecting qubits in future quantum computers. They also open the door to ultrathin memory and logic circuits that run cooler and more efficiently than today's silicon-based devices. "These topologically-protected spin currents are robust against disorders and defects, making them reliable even in imperfect conditions," Ghiasi said. However, there are still some limitations to overcome. Unlike AH, the QSH effect, which is more suitable for developing quantum circuits, observed here only occurs at very low temperatures, which limits its immediate use in consumer electronics. The researchers now aim to investigate ways to make the effect more robust at higher temperatures and explore other material combinations where this approach could work. The study has been published in the journal Nature Communications.
Yahoo
26-06-2025
- Business
- Yahoo
Delft University of Technology Joins Dassault Systemes' 3DEXPERIENCE Edu Center of Excellence Program, Boosting Tomorrow's Aerospace Workforce
The Netherlands' largest university of technology is deploying Dassault Systèmes' 3DEXPERIENCE platform for its experiential and lifelong learning programs New opportunities for students and professionals to develop in-demand digital skills will help drive the digital transformation of industry in the generative economy TU Delft will develop programs with industry partners at SAM XL, its campus-based field lab for smart advanced manufacturing, helping to reduce the skills gap VELIZY-VILLACOUBLAY, France, June 26, 2025--(BUSINESS WIRE)--Dassault Systèmes (Euronext Paris: FR0014003TT8, and Delft University of Technology, the Netherlands' largest university of technology, today announced that TU Delft became the 28th member of Dassault Systèmes' 3DEXPERIENCE Edu Center of Excellence global program, creating a unique opportunity for Dutch students and professionals to develop in-demand digital skills in aerospace, manufacturing automation and other sectors. The 3DEXPERIENCE Edu Center of Excellence label recognizes TU Delft as the first educational institution in the Netherlands to provide proven expertise in using and deploying Dassault Systèmes' cloud-based 3DEXPERIENCE platform for experiential and lifelong learning. TU Delft also becomes the first member to adhere to the revised charter of the program, which distinguishes a member's knowledge of virtual twins and the best practices emerging in generative industries. "We're proud to become the first 3DEXPERIENCE Edu Center of Excellence in the Netherlands. It helps us to meet the growing demand for skilled talent to lead the digital transformation and accelerated innovation for a wide range of industries, from aviation to maritime, and the smart and flexible automation of manufacturing," said Henri Werij, Dean Faculty of Aerospace Engineering, TU Delft. Stronger collaboration between industry, academia and technology leaders is crucial to develop innovative learning approaches that enhance employability and accelerate upskilling. Today's aerospace industry, in particular, requires highly skilled labor to sustain a culture of innovation, but faces challenges in replacing a retiring workforce to reduce the skills gap. Since its launch in 2021, the 3DEXPERIENCE Edu Center of Excellence program has trained thousands of graduates. As a 3DEXPERIENCE Edu Center of Excellence, TU Delft will develop programs bridging education and practice at SAM XL, its campus-based field lab focused on smart advanced manufacturing. Starting in September 2025, programs will engage university departments, applied sciences institutions and industry partners, applying the 3DEXPERIENCE platform to industry-relevant use cases. Students will learn to work with virtual twins, supported by platform-certified instructors, to prepare them for evolving and future jobs, while professionals in the lifelong learning curriculum of the university can upskill. "We're thrilled to welcome TU Delft and its SAM XL field lab into our 3DEXPERIENCE Edu Center of Excellence program. This partnership leverages our ambition to provide 3D UNIV+RSES that combine virtual twins, industry-driven AI, and real-world applications to prepare future engineers for the generative economy. By co-developing programs with industry partners at SAM XL, TU Delft is helping close the skills gap and accelerate digital transformation. Together, we are shaping the next generation of aerospace excellence," said Elisa Prisner, Executive Vice-President, Industry, Marketing and Sustainability, Dassault Systèmes. About Dassault SystèmesDassault Systèmes is a catalyst for human progress. Since 1981, the company has pioneered virtual worlds to improve real life for consumers, patients and citizens. With Dassault Systèmes' 3DEXPERIENCE platform, 370,000 customers of all sizes, in all industries, can collaborate, imagine and create sustainable innovations that drive meaningful impact. For more information, visit: About TU DelftDelft University of Technology is the Netherlands' oldest and largest university of technology. The university has a strong foundation. As builder of the world-famous Dutch waterworks and pioneer in areas such as biotech, aerospace and maritime engineering TU Delft is a top international university combining science, engineering and design. TU Delft stands for world-class education, research and innovation to meet challenges in energy, climate, mobility, health and digital society. Generations of Delft engineers have proven to be enterprising problem solvers in business and social contexts. SAM XLSAM XL (Smart Advanced Manufacturing XL) is a manufacturing automation expertise centre that forms a unique liaison between TU Delft faculties, the industry and suppliers. The engineers develop software and hardware to enhance the intelligence, connectivity and flexibility of industrial robots. This industrial-scale automation lab functions as an incubator to validate and demonstrate the robot technology for executing complex and varied tasks on large structures. SAM XL also provides training to uplift digital skills in executing automation projects. View source version on Contacts Dassault Systèmes Press Contacts Corporate / FranceArnaud MALHERBE +33 (0)1 61 62 87 73 North AmericaNatasha +1 (508) 449 8097 EMEAVirginie +33 (0) 1 61 62 84 21 China Grace +86 10 6536 2288 JapanReina +81 90 9325 2545 KoreaJeemin +82 2 3271 6653 IndiaPriyanka +91 9886302179 AP SouthHazel +65 8333 3484 TU Delft Press ContactIneke Boneschansker, communication manager Aerospace Engineering TU +31 (0) 6 140 151 19 (from Monday, June 23, 2025) Error in retrieving data Sign in to access your portfolio Error in retrieving data Error in retrieving data Error in retrieving data Error in retrieving data
