Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Locating natural resources in the deep sea – easily and eco-friendly

25.04.2016

Locating natural resources at the sea ground so far involves high costs. To reduce these, the Laser Development and Material and Processes departments at the LZH, together with eight European partners, work on developing a laser-based, autonomous system until 2020. This system shall detect soil samples, such as manganese nodules, and analyze the material composition of the specimen directly on the deep sea ground.

With this reliable and cost-efficient system, mineral and raw material contents of large areas shall be mapped in the future. Besides reduced costs, this technology allows for less impact to the environment.


Massive sulfides

photo: GEOMAR


Passive q-switched prototype of a laser head developed by the LZH within the course of the technology preparation program for the LIBS of the ESA ExoMARS mission

photo: LZH

Combining AUV and LIBS

Two technologies are combined to achieve this: an autonomous underwater vehicle (AUV) for the 3D mapping of the sea ground is equipped with a laser-based element-analyzing capability. This unit makes it possible to analyze soil samples by laser-induced plasma spectroscopy (LIBS). Here, a compact, autonomous system is needed that is, in addition, robust enough to withstand the pressure in the deep sea.

Knowledge from aerospace for the deep sea

Both the Laser Development and the Materials and Processes Department of the LZH are using knowledge from the ExoMARS project to develop the system. For the space mission, a small, ultralight laser system was developed that shall enable LIBS-based analyses on the Mars. For the use in the deep sea, the weight of the laser system is less important. However, here too a very compact system with a high pulse energy is demanded.

The system is being jointly developed by scientists from the LZH and neoLASE GmbH, an LZH spin-off company. The employees of this company contribute their expertise for the electronics and control of the laser system. The other partners add the necessary competencies in the fields of oceanography, 3D cartography and biogeochemistry.

The „ROBotic sUbSea exploration Technologies - ROBUST“ project is coordinated by The Welding Institute (TWI Ltd.) in Great Britain. Besides the LZH and neoLASE GmbH, the following partners are involved: CGG Veritas Consultants Ltd. (France), ALS Marine Consultants Ltd. (Cyprus), GEOMAR Helmholtz Centre for Ocean Research (Germany), Graal Tech S.r.l. (Italy), Università Degli Studi Di Genova (Italy), Coronis Computing S.L. (Spain).

At the Hannover Messe, the LZH is presenting current research results on underwater laser cutting. This process too is being developed by the scientists of the Machines and Controls Group in the Materials and Processes Department of the LZH. Visit us at the Pavilion of the State of Lower Saxony in hall 2, stand A08!

Dr. nadine Tinne | Laser Zentrum Hannover e.V.
Further information:
http://www.lzh.de/

More articles from Machine Engineering:

nachricht LZH optimizes laser-based CFRP reworking for the aircraft industry
24.11.2016 | Laser Zentrum Hannover e.V.

nachricht eldec generators CUSTOM LINE: Customized energy source for perfect induction heating
23.11.2016 | EMAG eldec Induction GmbH

All articles from Machine Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

Im Focus: Bacterial Pac Man molecule snaps at sugar

Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.

The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...

Im Focus: Newly proposed reference datasets improve weather satellite data quality

UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration

"Traffic and weather, together on the hour!" blasts your local radio station, while your smartphone knows the weather halfway across the world. A network of...

Im Focus: Repairing defects in fiber-reinforced plastics more efficiently

Fiber-reinforced plastics (FRP) are frequently used in the aeronautic and automobile industry. However, the repair of workpieces made of these composite materials is often less profitable than exchanging the part. In order to increase the lifetime of FRP parts and to make them more eco-efficient, the Laser Zentrum Hannover e.V. (LZH) and the Apodius GmbH want to combine a new measuring device for fiber layer orientation with an innovative laser-based repair process.

Defects in FRP pieces may be production or operation-related. Whether or not repair is cost-effective depends on the geometry of the defective area, the tools...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

Multiregional brain on a chip

16.01.2017 | Power and Electrical Engineering

New technology enables 5-D imaging in live animals, humans

16.01.2017 | Information Technology

Researchers develop environmentally friendly soy air filter

16.01.2017 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>