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TUD

TU Dresden
Country: Germany
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553 Projects, page 1 of 111
  • Funder: EC Project Code: 706754
    Overall Budget: 176,115 EURFunder Contribution: 176,115 EUR

    Conventional robots usually consist of heavy rigid components, such as engines, gearboxes and rigid linkages that are made of high-density materials. Although they can perform complex movements and processes, they are typically not able to perform movements similar to those of biological models. Dielectric elastomer actuators (DEAs) allow flexible mechanisms to behave as artificial muscles. They typically consist of mechanically pre-strained elastomer membranes and compliant electrodes. They are lightweight and can produce impressive muscle-like strains. DEAs are capable of mimicking the well-established antagonistic principle found in nature. To control dielectric elastomer actuators, complex, expensive and external electronic control units are generally required, which often makes the practical application of DEA complicated and rather attractive of commercial products. However, dielectric elastomers can also act as sensors and piezoresistive switches (Dielectric elastomer switches - DESs), enabling the integration of monitoring and control functions in compliant components themselves. During the proposed project at the Biomimetics Laboratory at the University of Auckland and the TU Dresden, dielectric elastomer components will be used in complex soft robotic systems. The aim of the proposed project is to integrate sensing, signal processing and actuation by the use of only flexible dielectric elastomer components in soft robotic structures without using conventional electronics. Based on the current knowledge of the DESs at the Biomimetics Laboratory, sensor-actuator systems comprising dielectric elastomer (DE) sensors, actuators and logic switches will be designed, to monitor, evaluate and react to certain environmental conditions. The developed laboratory scale processes will be transferred to modern production technologies at the Solid State Electronics Laboratory in Dresden in cooperation with the Werner-Hartmann-Zentrum for technologies of electronics.

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  • Funder: EC Project Code: 101075426
    Overall Budget: 1,499,830 EURFunder Contribution: 1,499,830 EUR

    Forests play a central role for global carbon cycling and biodiversity. Yet, the unabated continuation of climate change and increasing anthropogenic pressure on forest resources are altering forest ecosystems by modifying species composition and ecosystem processes. Increasing temperatures are likely to increase decomposition rates and thus carbon emissions, while the opposite effect may be expected from loss of decomposer biodiversity as land-use intensity increases. However, it remains unknown how climate change and land use interactively shape decomposer communities, decomposition rates and carbon fluxes. This limits the ability to model the future of the global forest carbon sink as well as of forest policy and management to counteract undesired developments. Here, I will investigate the joint effects of climate change and land use on decomposer communities and carbon fluxes from wood decomposition at the global scale, as well as the underlying processes and mechanisms. Making use of an operating network of 60 research sites on six continents, I will study how biodiversity-decomposition relationships and effects of land use change along global climate gradients. Empirical results will be used to model carbon fluxes from wood decomposition at the global scale and to generate projections of carbon fluxes under different scenarios of forest use and climate change. Extensive experiments will be conducted both in the field and in walk-in climate chambers to identify which facet of biodiversity drives wood decomposition and to unravel the mechanisms behind the climate-dependency of biodiversity-decomposition relationships. The BIOCOMP project will bring about a new level of understanding of how biodiversity and carbon cycling in forest ecosystems worldwide will change as a result of climate change and land use, and it will provide the data and strategies to tackle one of the most pressing challenges of current climate and forest policy.

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  • Funder: EC Project Code: 669811
    Overall Budget: 2,500,000 EURFunder Contribution: 2,500,000 EUR

    The goal of this research proposal is to unravel the cellular and molecular mechanisms for the ability of the adult zebrafish brain to regenerate itself after a lesion, and to compare these mechanisms in the non-regenerating mammalian brain. The corresponding mechanisms, if reactivated, may rekindle regeneration also in mammalian brains. Specifically, we focus on identifying the endogeneous stem and progenitor cells that contribute to neural regeneration in zebrafish, by genetic lineage tracing experiments under conditions of regeneration. We have begun to identify the genes and mechanisms controlling regeneration ability in these cells by transcriptome analysis of specific cell types isolated by FACS sorting and transcriptome analysis, which has revealed a key positive role for inflammation as a trigger in regeneration. The resulting candidate genes are functionally tested in adult zebrafish brains for their requirement and sufficiency to elicit or contribute to brain regeneration. If confirmed, we will test for the function of such genes and mechanism in mammalian tissue culture models of regeneration, and determine in adult mouse brain in vivo whether they are candidates to be tested in mammalian brain regeneration. Functional knock-out, knock-in and viral expression tests of such genes and mechanisms in vivo in mice will determine their ability to rekindle regeneration in the lesioned mammalian brain. This research proposal will provide fundamental insights into the cellular and molecular mechanisms controlling the process of brain regeneration in vertebrates, and will thus suggest avenues for future progenitor cell-based therapies of the injured or diseased human brain.

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  • Funder: EC Project Code: 101153910
    Funder Contribution: 289,408 EUR

    Space industry is growing at an unprecedented rate with more satellites launched into low Earth orbits (LEO) each year than ever before. This is leading to an increasing number of collisions of uncontrolled space objects and space debris accumulation in LEO. Sustainability of the space economy requires new techniques to address space debris. REDECORATE proposes CubeSat swarms as a cost-effective way to mitigate space debris. It develops a debris deorbiting and recommission concept combining novel control and guidance approaches and a CubeSat swarm equipped with staged ionic electro spray engines (iESE). A CubeSat swarm can rendezvous with space debris, dissipate its rotational energy (detumble) using reaction wheels. The main thrusters lower the debris orbit to burn-up the system in the atmosphere. Such a mission is highly challenging, requires coordinated CubeSat swarm guidance and control, reliable hardware and effective propulsion - a combination which does not exist so far. First, staged iESE thrusters facilitate longer missions and achieve higher reliability and thrust than standard CubeSat propulsion. If the CubeSats are attached around a decommissioned satellite, coordinated activation of the iESEs can function as a new control system for detumbling (avoiding unreliable reaction wheels), deorbiting and due to their long life-time even recommissioning. Second, a safe-by-design hierarchical control framework will be developed to address the need for high reliability. It uses a planner-tracker feedback stack and addresses all mission segments. Third, integral quadratic constraints (IQCs) will be used to increase robustness w.r.t. system uncertainties and communication delay inside the swarm. The feasibility of the concept will be validated using IQC-based and probabilistic robustness analyses on a digital twin of the iESE CubeSat swarm and microcontrollers-in-the-loop. In summary, the project will provide Europe with know-how to tackle the space debris crisis.

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  • Funder: EC Project Code: 268383
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