Newsletter 2/2019

Newsletter of the Fraunhofer IST

Editorial

Dear reader,

In mid-summer temperatures just before the start of the holiday season, we are pleased to send you our second newsletter of 2019. We would also like to cordially invite you to visit us at the LASER World of Photonics. From the 24th to the 27th of June we will present our latest developments in the field of precision optics at a joint Fraunhofer booth. In addition we would like to draw your attention to our annual report of 2018. 

In this newsletter in the column “answers“, you will find the continuation of Professor Bräuer's answer to the question about the creation of a vacuum. By the way: If you always wanted to pose your own question concerning our research topics, please do not hesitate to contact us.

We hope you enjoy reading our latest reports and wish you a wonderful summer to recharge your batteries ready for a successful second half year.

The Editorial Team

Precision optics oncurved surfaces at LASER World of Photonics

Optical functions – e. g. anti-reflective coatings or filters for specific spectral ranges – can be realized by means of interference coating systems. These systems deploy a sequence of high and low-refractive layers (e. g. Ta2O5 und SiO2) whose layer thicknesses are precalculated according to the desired optical function. At the Fraunhofer IST, such coating systems are produced by means of magnetron cathode sputtering; applications are optical components in the field of precision optics.

In order to minimize the quantity of optical components – and, thereby, disturbing reflections - interference coating systems should be applied directly to curved lens surfaces. As a result of the differing angles of incidence at different impact points, the wavelength range of the optical functional layers shifts. The compensation of this effect requires a precisely conformed layer-thickness profile.

For the realization of these requirements, the Fraunhofer IST developed the simulation software MOCCA for magnetron cathode sputtering, with which plasma discharge, gas dynamics and the dynamic coating of moving 3D components can be simulated. With the aid of this simulation environment, a process for applying interference coating systems to convex lenses was developed. A lens coated with a bandpass filter served as the demonstrator, in which the transmission band always remains within the same wavelength range irrespective of the position of the incident light. In the future, the simulation-based process will be extended to other component geometries, thereby enabling the realization of precision optical coatings in a multitude of applications.

Research

Read here three reports on the highlights of the research work at the Fraunhofer IST of the past months:

 

M2ARS - Modifications of membranes for wastewater treatment of heavy metals

To improve the wastewater treatment of heavy metals, the Fraunhofer IST has developed an atmospheric pressure plasma process to specifically functionalize filter membranes.

 

Surface technology for the generative production of polymer components

One weak point of additive manufacturing is currently presented by the surface, which can vary greatly depending on the manufacturing process. This can lead to problems in the utilization of the components and may necessitate surface treatment. At the Fraunhofer IST, additively manufactured components are therefore galvanically metallized and furnished with the desired surface properties.

 

Fraunhofer IST technology at “Hacking Engineering”

The “Hacking Engineering” Hackathon is a new format. The teams of participants had 48 hours in which to solve one of four specified challenges. One of the winning teams chose for its solution the multifunctional thin-film sensor system developed at the Fraunhofer Institute for Surface Engineering and Thin Films IST – and thereby won “Kill the valve”.

Answered...

 

Dear Professor Bräuer, how is actually vacuum generated?

Part 2

Trade fairs and exhibitions

In the coming months, the Fraunhofer IST will be active at the following trade fairs, conferences and events:

LASER World of Photonics 2019

München, June 24 – 27, 2019

The Fraunhofer IST will present ultraprecise optical interference and bandpass filters as well as the monitoring system MOCCA+®.

Rapid.Tech 2019

Erfurt, June 25 – 27, 2019

As part of a joint booth of the Fraunhofer Additive Manufacturing Alliance, the Fraunhofer IST takes part for the first time at the trade fair for additive manufacturing.

TU Night 2019

Braunschweig, June 29, 2019, 6.00 pm – 1.00 am 

For the first time the Fraunhofer IST participates at the TU Night, a mixture of science festival and Campus Open Air. 

V2019 – Vakuum & Plasma

Dresden, October 8 – 10, 2019

At the symposium on thin-film surface technology, the Fraunhofer IST will be represented at the accompanying industrial exhibition.

Conferences

As a scientific partner, the Fraunhofer IST is involved in the following conferences:

 

International Battery Production Conference

Conference

Braunschweig, November 4 – 6, 2019

 

The Fraunhofer IST participates as a scientific partner at the International Battery Production Conference, which takes place for the second time in Braunschweig. 

 

Reactive Sputter Deposition RSD 2019

Conference and technical exhibition

Braunschweig, December 5 – 6, 2019

 

For the first time the International Conference on Reactive Sputter Deposition RSD takes place at the Fraunhofer IST in Braunschweig.

The deadline for abstract submission is November 1, 2019.

 

 

 

 

Int. Conference on Coatings on Glass and Plastics ICCG13

Conference and technical exhibition

Braunschweig, March 23 – 26, 2020

 

The deadline for abstract submission is August 31, 2019.

The deadline for exhibitor registration is Dezember 15, 2019

Lectures

During the next months, many Fraunhofer IST scientists will be travelling internationally to conferences, conventions, and seminars in order to present their research results to expert audiences. We give you an overview of the planned talks below.

Metallized structural component made from PEEK.
© Fraunhofer IST, Falko Oldenburg

Metallized structural component made from PEEK.

Plasma discharge in synthetic air.
© Fraunhofer IST, Falko Oldenburg

Plasma discharge in synthetic air.

22. Symposium Verbundwerkstoffe und Werkstoffverbunde, June 26 - 28 Juni, Kaiserslautern, Germany 

Asian European International Conference on Plasma Surface Engineering AEPSE, September 1 -  5 September, 2019, Jeju Island, Korea   

ZVO-Oberflächentage, September 11 - 13 September 2019, Berlin, Germany

 

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