Andreas Hermann’s Post

Our latest research article: "Characteristics of the jet shear layer of a round elevated jet in crossflow" has just been published in Experimental Thermal and Fluid Science, Volume 158, 2024.

🎙🎉 Exciting News! 🎉 I'm thrilled to announce the publication of my new book, "Hybrid Aerogels: Energy and Environmental Applications" on Degruyter Publishing house! 🚀📚 After months of intensive research and collaboration with leading experts in the field, this book delves into the fascinating world of hybrid aerogels. These innovative materials combine the best properties of different components, leading to remarkable applications in various industries. 📖 What's Inside: # Comprehensive overview of hybrid aerogels and their synthesis # Detailed discussions on their unique properties # Cutting-edge applications in environmental, energy, and biomedical fields # Future Perspectives and research directions This book is a valuable resource for researchers, engineers, and anyone interested in advanced materials science. Whether you're an academic, a professional in the industry, or simply passionate about innovation, there's something in it for you! 👉 https://lnkd.in/grut8ZAv I'd like to extend my gratitude to my guide Dr. Krunal Gangawane, my co-authors, and colleagues for their valuable support. Your encouragement and insights were invaluable. Feel free to reach out if you have any questions or would like to discuss the content further. Let's continue to explore and push the boundaries of materials science together! #HybridAerogels #MaterialsScience #Innovation #NewPublication #Energy #Environment

Safety in the future hydrogen infrastructure is of prime importance. The Institute of Technical Physics focuses on the remote detection of hydrogen mixtures and leaks at long distances. Our scientists at our site in Lampoldshausen have developed such a sensor and successfully tested the detection of ignitable hydrogen mixtures through Raman methods at distances of 100 m. The detection works under different (adverse) weather conditions. Another important research is the contribution to the assessment of the climate impact of hydrogen, which is part of the Deutsches Zentrum für Luft-und Raumfahrt e.V. (DLR) CLEANIEST project. You can find more information on this interesting and important topic in the article from DLR ( link in the comment section).  #research #hydrogen #remotedetection #cleaniest #raman

Check out our new paper on using imaging spectroscopy to assess the impacts of invasive plants on aboveground and belowground characteristics. In this paper, we showed that we can use remote sensing to assess the impacts of invasive plants on aboveground characteristics and map belowground characteristics through linkages between aboveground and belowground characteristics. Here’s the link to the paper if you’d like to check it out! https://lnkd.in/gjqft3Hj

In this study, researchers demonstrated hybrid polar dielectric metasurface thermal emitters with machine learning inverse design, enabling a high emissivity of ~0.92 within the atmospheric transparency window 8–13 μm, a large spectral selectivity of ~1.8 and a wide emission angle up to 80 degrees, simultaneously. This selective and omnidirectional thermal emitter has led to a new record of temperature reduction as large as ~15.4 °C under strong solar irradiation of ~800 W/m2, significantly surpassing the state-of-the-art results. Full-length paper available at https://lnkd.in/gcqfu3J7 Ultrahigh performance passive radiative cooling by hybrid polar dielectric metasurface thermal emitters

BioGeometry is the only science that has been effectively applied on a wide scale for the harmonization of the effect of electromagnetic fields (EMFs) and geopathic stress (Earth energy grids) on biological systems.  https://www.biogeometry.ca

Our new paper in Nature Communications describes how the stacking of oxide materials can result in an 80,000% change in resistance when applying magnetic fields. The extreme magnetoresistance can be tuned dynamically using oxygen vacancy engineering, which can be controlled to either greatly enhance the magnetoresistance or eliminate it. Read more with open access here: I would like to thank the Novo Nordisk Foundation for the financial support, DTU Energy at DTU - Technical University of Denmark for hosting the research, and Beena Kalisky, Nini H. Pryds, Vladimir Strocov, Tristan Steegemans, Thierry Désiré, Yunzhong Chen and Anders Smith for the excellent collaboration. #2DEG, #magnetoresistance, #defectengineering, #oxygenvacancy, #heterostructures, #materials, #condensedmatterphysics, Nature Portfolio, Springer Nature Group.

📃Scientific paper: Double-well instantons in finite volume Abstract: Assuming a toroidal space with finite volume, we derive analytically the full one-loop vacuum energy for a scalar field tunnelling between two degenerate vacua, taking into account discrete momentum. The Casimir energy is computed for an arbitrary number of dimensions using the Abel-Plana formula, while the one-loop instanton functional determinant is evaluated using the Green's functions for the fluctuation operators. The resulting energetic properties are non-trivial: both the Casimir effect and tunnelling contribute to the Null Energy Condition violation, arising from a non-extensive true vacuum energy. We discuss the relevance of this mechanism to induce a cosmic bounce, requiring no modified gravity or exotic matter. ;Comment: 28 pages, 6 figures Continued on ES/IODE ➡️ https://etcse.fr/CiedN ------- If you find this interesting, feel free to follow, comment and share. We need your help to enhance our visibility, so that our platform continues to serve you.

All hands on deck and finally out! Congratulations especially Arkendu Roy & Sourabh Kumar on the experimental-theoretical combination that does the trick. "Synergistic Catalytic Sites in High-Entropy Metal Hydroxide Organic Framework for Oxygen Evolution Reaction" The use of operando X-ray absorption spectroscopy alongside ab initio calculations provides valuable insights into the synergistic catalytic sites and reaction mechanisms. This approach beautifully demonstrates the potential of high-entropy materials (chemically complex materials) in sustainable energy technologies. Your research exemplifies the power of bridging experimental and theoretical work in materials science. It's exciting to see how this could shape the future of electrocatalysts and water electrolysis. Bundesanstalt für Materialforschung und -prüfung Humboldt-Universität zu Berlin #MaterialsChemistry #FutureOfEnergy https://lnkd.in/dd826VNN

🌟 Thrilled to Announce Our New Publication in Soft Matter! 🌟 Our latest research, now featured on the cover of Soft Matter, explores the complex interface between microemulsions (MEs) and electrode surfaces—work that could significantly impact electrochemical technologies, including redox flow batteries. ⚡🔬 This study used neutron reflectivity experiments and molecular simulations to uncover how deuterated water (D₂O)/polysorbate-20/toluene MEs assemble on hydrophilic and amphiphilic surfaces. Key findings include: The formation of layered structures near electrode surfaces, which transition into the bulk ME as mixed, perforated lamellae. The influence of D₂O concentration on layer purity and structure, with lower concentrations increasing layer definition. The impact of surface type on layer permeability, with amphiphilic surfaces creating more perforated oil and water pathways. These structural insights are crucial for understanding and optimizing electron and ion charge transfer in electrochemical systems, paving the way for more efficient and controlled energy storage solutions. 📖 Read the full article here: https://lnkd.in/eSYWFfkq 🎨 View the cover art here: https://lnkd.in/eKr8xNSS We’re excited to contribute to advancements in electrochemistry and soft matter science, and we look forward to discussing the implications of these findings with the community. #SoftMatter #Electrochemistry #Microemulsions #RedoxFlowBatteries #EnergyStorage #ScientificResearch