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TU Darmstadt Patents

TU Darmstadt’s patents represent inventions originating from scientific research and their transfer into business and society. The following overview showcases the university’s patent portfolio.

3DConFil –hybrid-additive manufactured integrated components

New printing process enables the production of components with integrated wires, optical fibres or tubes using fused filament fabrication
The increase incustomer benefit leads toan increase in functional density and individuality in numerous fields of application, such as energytechnology. This trend is leading to the increasing mechatronisation of almost all industries. Due to the already complex geometries of the products, an integration of wires, optical fibres or tubes is not possible or only possible with considerable additional effort.The use of
hybrid-additive manufractured components with integrated conductors enables the development of novel, innovative products.
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Additive Manufacturing of Wooden Components

System for additive manufacturing of wooden components while retaining the natural fibre structure
Conventional woodworking methods only allow a limited shaping of the final element. Additive manufacturing processes for wood may overcome this disadvantage, but with their use of wood flour or wood shavings from the raw material the natural wood fibre structure and also the advantageous mechanical properties of the wood are lost.
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Additive manufacturing of foamed plastic components using supercritical fluids

A new approach for producing lightweight, functional, and sustainable foam structures
In additive manufacturing, plastics are currently printed
mostly as solid or less frequently chemically foamed
materials. Foams offer significant advantages over
conventionally printed components. However, chemical
blowing agents limit material selection, control of
porosity, and recyclability. Physical foaming with
supercritical fluids offers a sustainable alternative with
precise process control, which so far has only been
realized in conventional large-scale extrusion systems.
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Additive manufacturing of force sensors

Disruptive manufacturing of application-specific force sensors based on laser-based powder-bed-fusion
Structural integrated force and torque sensors are increasingly required in fields such as plant construction and medical engineering. All these fields share the requirement of complex structures. This complicates a simplified integration of commercial general-purpose sensors. Laser-based powder-bed-fusion (LPBF) of metals, as an additive manufacturing process, enables the production of application-specific sensors.
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Aerodynamic Bearings with Mechanical Foil Preload

Cost efficient, oil-free and pure
Aerodynamic foil bearings enable an oil-free support of high speed rotors with low mass. Currently available air foil bearings consist of different foils with complex geometries. This requires more work in the design of the bearing components. In addition, the complex geometries lead to high accuracy requirements in production and time-consuming assembly processes.
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Inorganic paper finishing based on geopolymers

1122
Novel coating technology for paper-based materials
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Triggering of serial switching elements for high voltage systems

Cascadable trigger for serial switching elements
For switching high voltages there is the need for many
serial switching elements (e.g. semiconductors). The
insulated trigger is realized by a inductive coupling or
mechanical, what makes a insulation of the full voltage
necessary. With the new method a cascading of
capacitive coupled elements makes this obsolete.
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Assistance system for recommending energy efficiency measures on metal cutting machine tools

It increases energy efficiency in the company by incentivizing and including workers
In their endeavors to increase the energy efficiency of their production equipment, companies come up against three implementation hurdles: a lack of transparency regarding energy consumption, the implementation of less effective measures due to the high level of machine complexity and the low motivation of workers to implement the measures in operation. An assistance system that is independent of the equipment can overcome these hurdles.
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Acceleration and Focusing of Electrons on a Microchip

A novel focusing scheme allows any length (energy) on electron accelerator microchips
Electrons can be accelerated with very high gradients (energygainper length) on microchips using short pulse lasers. To increase the final energy, the the length has to
be increased, which requires a focusing scheme (APF) fulfils this requirement. However, the technical implementation is difficult because symmetrical laser fields have to be generated in the nanostructures, which originate from purely two-dimensional lithography.
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Cannabinoids from tobacco

Natural product production by plant biotechnology
Cannabinoids are natural components which have a high
potential to meet various therapeutical needs. Although
some of them (like THC and CBD) are abundantly present
in Cannabis plants, the psychotropic nature of THC
requires strong regulation of plantproduction. Moreover,
some promising candidate compounds are present only
in minor amounts in common Hemp or Cannabis.
Therefore, atailormade, biotechnological production of
specific Cannabinoids is a keytechnology.
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CARBON LOOPING IN SAND LIME BRICKS

ENHANCED SAND LIME BRICK BY CO2 FIXING DURING CURING
Sand-lime bricks are manufactured by combining sand and hydrated lime in an autoclave, creating CSH phases. The main factor for the carbon footprint of sand-lime bricks is the production of lime. Producing one ton of quicklime inevitably releases 440 kg of CO2. In the state of the art it is known to cure cementitious materials by means of carbonation.
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Chipless RFID-tag design for harsh environmental conditions

Innovative design widens application field of chipless RFID-tags
Chipless radio frequency identification (RFID) tags usually can only be used under certain environmental conditions. Furthermore, RFID tags usually operate below 10 GHz. At higher frequencies, the influence of production tolerances increases, resulting in higher production costs and a lower operating range.
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Detektion von biotischen und abiotischen Liganden

Portables Lab-on-Chip Analysesystem als frühdiagnostische Messmethode
Zu den biotischen und abiotischen Liganden (Biomolekülen) zählen organische und anorganische Verbindungen jedweder Art: Umweltgifte, Agrarchemikalien, Proteine, Antibiotika Hormone, Neurotoxine sowie Bakterien, Viren und Parasiten. Die Detektion dieser Biomoleküle erfolgt bisher in aufwendigen, kostspieligen und zeitintensiven Verfahren wie z.B. Antikörper-basierten Detektionsverfahren. Systeme, die für all diese Substanzen eine zuverlässige Detektion in kurzer Zeit ermöglichen, existieren bisher nicht.
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Wireless sensor unit

Sensor integration? Let the cables go! Innovative wireless screw-in sensor technology makes it possible.
In all industrial sectors, there is an increasing demand for integrating active sensors, e.g. for measuring temperature or vibration, into other components. Especially in harsh environments with limited space, this is an extremely challenging task.
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Torque measurement in the electrical power train

Innovative solution for the torque measurement in the electrical power train increases functional safety
The torque in electrical power trains of vehicles has to be measured in two independent ways. Known concepts as the usage of two different mathematical models both based on the input parameters motor speed and electrical current are depending on extensive characteristical maps and therefore high efforts for determination of the parameters.
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Precious metal free Fuel Cell Catalyst

Manufacturing Method for an Iron, Nitrogen and Carbon-based Cathode Catalyst
Hydrogen based fuel cells offer an attractive opportunity for a future CO2-free energy supply as converters. In fuel cells, catalysts are needed to facilitate the occurring chemical reactions. Despite the fact that the catalysts in comparison to other stack components are only needed in smaller weight proportions, they cause up to 40 % of the overall stack costs. This is because fuel cell catalysts are based on precious platin
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ONE-NODE QUADRATURE FOR EXPLICIT ISOGEOMETRIC ANALYSIS IN STRUCTURAL DYNAMICS

NEW QUADRATURE METHOD REDUCES COMPUTATIONAL COST OF ISOGEOMETRIC EXPLICIT DYNAMICS CODES
Explicit structural dynamics codes, used extensively in car crash analysis, metal forming and blast, require optimized solution updates to achieve highly efficient transient calculations. All ingredient are present in contemporary linear finite element codes based on mass lumping, reduced quadrature, and hourglass stabilization. A competitive higher order spatially accurate technology – with the promise to deliver more accurate and efficient numerical simulation – has so far not been realized.
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Energieflexibler Betrieb mit Rückkopplung des Reinigungsergebnisses

Neuartiger Ansatz zur Betriebsoptimierung in der industriellen Teilereinigung
In aqueous industrial component cleaning, process parameters such as bath temperature have traditionally been controlled at a fixed value, without taking external factors—such as electricity supply or the degree of contamination—into account. Settings based exclusively on expert knowledge render process management inflexible and frequently result in energy-intensive over-cleaning.
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EquaLazer

Real-time control and intensity equalization of two-dimensional laser beam patterns with thousands of laser beams
In many applications, laser beam control for
spatiotemporal pattern generation relies on acoustooptical
components. However, control bandwidth and
flexibility for intensity-controlled and multi-beam
applications are severely restricted by nonlinearities as
well as by interactions in case of controlling multiple
beams and multiple dimensions. Current techniques
employ pre-calibration and closed-loop control methods,
which impede highly dynamic pattern generation.
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Metal Based Renewable Energy Storage

1025
Renewable energy as a commodity like oil, gas, and coal for global trade and loss-free storage
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