Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Scientists at TU Dresden discover new phenomenon in the field of gas-solid interactions

07.04.2016

Prof. Dr. Stefan Kaskel and his team of scientists at the Institute of Inorganic Chemistry I at TU Dresden discovered in cooperation with the Helmholtz-Centre Berlin (HZB) and French researchers a new phenomenon in the field of gas-solid interactions: the so-called Negative Gas Adsorption (NGA). The renowned scientific journal “Nature” thereon publishes a paper of the participating scientists under the title "A pressure-amplifying framework material with negative gas adsorption transitions".

Adsorption refers to the process by which molecules of a gas collect on the surface of a solid. Metal-organic frameworks are highly porous materials which are widely used for adsorptive applications such as in the reduction of pollutant emissions.


In situ measurement setup for structural analysis at a synchrotron (Helmholtz Centre Berlin)

TU Dresden, Prof. AC1


(network structure): Three-dimensional network structure of the highly porous and flexible material DUT-49 (DUT= Dresden University of Technology) which displays the NGA-effect

TU Dresden, Prof. AC1

The scientists from Dresden, Berlin and France have now succeeded in demonstrating that these materials can dynamically change their structures.

During this change of structure, the scientists observed a so far unknown phenomenon: instead of absorbing the gas under pressure increase, the materials released the gas eruptively after reaching a certain threshold.

This new phenomenon in the area of gas-solid interactions is therefore called Negative Gas Adsorption (NGA). Normally, materials respond to increased gas pressure by gathering molecules on the outer or inner surface and thus, the gas pressure is buffered and decreases with time. NGA materials can react towards pressure increase by releasing molecules.

Hence, the pressure is further amplified. This counterintuitive phenomenon is triggered by solid state phase transitions.

Similar to a volcano effect, a small trigger can cause a gas eruption out of this material. Gas pressure amplifying materials represent a new class of solids with potential applications in rescue systems, microengineering and separation applications.

For the full paper, please go to http://www.nature.com/nature/journal/vaop/ncurrent/full/nature17430.html

Contact details for journalists:
Prof. Dr. Stefan Kaskel
Chairperson
Inorganic Chemistry
Technische Universität Dresden
Bergstr. 66
01069 Dresden
Germany
Tel.: +49 (0) 351 463-34885
Fax: +49 (0) 351 463-37287
E-Mail: Stefan.Kaskel@chemie.tu-dresden.de

Kim-Astrid Magister | Technische Universität Dresden
Further information:
http://www.tu-dresden.de/

More articles from Life Sciences:

nachricht Mass spectrometry sheds new light on thallium poisoning cold case
14.12.2018 | University of Maryland

nachricht Protein involved in nematode stress response identified
14.12.2018 | University of Illinois College of Agricultural, Consumer and Environmental Sciences

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Data use draining your battery? Tiny device to speed up memory while also saving power

The more objects we make "smart," from watches to entire buildings, the greater the need for these devices to store and retrieve massive amounts of data quickly without consuming too much power.

Millions of new memory cells could be part of a computer chip and provide that speed and energy savings, thanks to the discovery of a previously unobserved...

Im Focus: An energy-efficient way to stay warm: Sew high-tech heating patches to your clothes

Personal patches could reduce energy waste in buildings, Rutgers-led study says

What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes - while significantly reducing your...

Im Focus: Lethal combination: Drug cocktail turns off the juice to cancer cells

A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.

The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...

Im Focus: New Foldable Drone Flies through Narrow Holes in Rescue Missions

A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.

Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...

Im Focus: Topological material switched off and on for the first time

Key advance for future topological transistors

Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

New Plastics Economy Investor Forum - Meeting Point for Innovations

10.12.2018 | Event News

EGU 2019 meeting: Media registration now open

06.12.2018 | Event News

 
Latest News

Data use draining your battery? Tiny device to speed up memory while also saving power

14.12.2018 | Power and Electrical Engineering

Tangled magnetic fields power cosmic particle accelerators

14.12.2018 | Physics and Astronomy

In search of missing worlds, Hubble finds a fast evaporating exoplanet

14.12.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>