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Research News 2020

Because of its extensive expertise in various areas of riblet surfaces, flow simulation and test & evaluation, bionic surface technologies will again be a competent cooperation partner in various projects in 2020: NeGeMi, Calamari, RiSpect and Idomeneo.

Micro And Nano Structured Surfaces Suitable For Mass Production: Project NeGeMi - Next Generation Microfluidics

Projekt NeGeMi Logo

Although we come across microstructured surfaces every day – be it in the form of our smartphones, functional clothing, self-cleaning surfaces in e.g. bathrooms or kitchens, or even in the pharmaceutical sector – the production and application of these is expensive and time-consuming. So called roll-to-roll processes could simplify both, the manufacturing and application of flexible, microstructured surfaces.
The project “NextGenMicrofluidics” combines the competences of 21 companies and research organizations along the entire value chain and offers services for the development and production of customized microfluidic lab-on-a-foil systems for companies – from start-ups to large industry. An Open Innovation Test Bed is set up for the development and production of these lab-on-a-foil systems, which subsequently lead to the mass production of several million lab-on-a-foil systems per year (for example for rapid tests in the medical field).

As experts in all areas of flow simulation and measurement technology, bionic surface technologies is closely involved in the design process and are also responsible for optimizing the flow in microchannels.

bionic surface technologies was already part of the consortium for the R2R, the predecessor project of NeGeMi. Read more about the R2R project here.

Reducing biofouling with Riblet technology: Calamari - Coated Riblets with Antifouling Effect for Maritime Applications

So called maritime biofouling, the settlement of micro-organisms on the surfaces of ships, represents a far-reaching and difficult problem to solve. The settlement of those micro-organisms increases the flow resistance of the ships in the water and consequently not only leads to reduced speed, range, and controllability, but also increased maintenance intervals and fuel consumption.
To counteract his, biocidal coatings are primarily used, which reduce the adhesion resistance of all surfaces that come into contact with sea (ship surfaces, motors, bridge piers and harbors structures e.g.) – however, this is gradually banned by the international shipping organization.

The Calamari project combines three different approaches to counteract Biofouling: with the expertise of bionic surface technologies, micro- and nanostructured surfaces called Riblets are created in a highly elastic coating system with metal oxides on flexible foils. Afterwards they are evaluated in a test setup with tropical sea water and compared with untreated surfaces.

Period: 2019 – 2021

Consortium: bionic surface technologies GmbH | Micro Tau Pty Ltd. | Joanneum Research Forschungsgesellschaft mbH

Deep learning as key to efficient Riblet measurement methods: RiSpect - Riblet Inspection and Efficiency Assessment Technology

Nano- and microstructured surfaces, also called Riblets, are being used more and more frequently – their use is associated with several positive effects. Riblet surfaces reduce fuel consumption on high-speed trains and airplanes, increase the produced energy and reduce the noise pollution on wind power plants, and improve the steering properties in motor sports.
However, the increase in efficiency depends on the quality of the Riblets – and it takes a lot of time and money to check them.


The RiSpect project counteracts this problem with the method of machine learning as a basis for efficient measurement processes. Many sample images with both, correct and defective, surfaces and simulations of already available Riblet surfaces are used for his. A database is also created and the necessary equipment for image creation is developed. At the end of the project, an additional evaluation of the proposed methods is carried out on different surfaces of applications.

Period: 2020 – 2021

Consortium: AIT Austrian Institute of Technology GmbH | bionic surface technologies GmbH | Technische Universität Graz | University of Wyoming

Extend Life Of Engines: Idomeneo - Influence of temperature distributions on modern engine centre frames optimization

More lightweight and shorter engines and housing parts are currently being developed in order to save weight, reduce the amount of fuel and, above all, reduce CO2 emissions. However, this creates the problem that extremely high temperatures, also called hot streaks, have less time to mix and the typically non-uniform temperature distribution has negative consequences such as a shortened durability or a total failure of the hot-run parts.

In the Idomeneo project, the influence of these hot streaks on the aerodynamics and heat transfer at the TCF blade and the side walls is experimentally investigated and supported by numerical simulation. For this purpose, the flow field, which is already known from measurements, is simulated.

 

Period: 2020 – 2022

Consortium: bionic surface technologies GmbH | Technische Universität Graz 

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