Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Research team discovers 'rubber material' that could lead to scratch-proof paint for car

08.09.2017

Led by Dr Elton Santos from the University's School of Mathematics and Physics, an international team of researchers have found superlubricity in a few layers of graphene - a concept where friction vanishes or very nearly vanishes. The experts also found that a few layers of hexagonal boron nitride (h-BN) are as strong as diamond but are more flexible, cheaper and lighter.

The findings, which have been reported in Nature Communications, reveal that the h-BN layers form the strongest thin insulator available globally and the unique qualities of the material could be used to create flexible and almost unbreakable smart devices, as well as scratch-proof paint for cars.


Queen's University Belfast research could mean scratch proof paint for cars.

Credit: n/a


Queen's University Belfast researcher discovers 'rubber material.'

Credit: n/a

Dr Santos explains: "We have all at some point in life stepped on a slippery surface where we have to steady our balance so that we don't fall. In most cases, liquid such as water or oil is the cause and this slippery state is what we describe as superlubricity - there is basically no friction on a surface.

"In graphene, this superlubricity state comes from atomic orbitals that compose carbon atoms. Normally, to generate friction some orbitals must overlap and heat, or some energy, must be released. Surprisingly, our research shows that graphene does not require this process, it just spontaneously slides on top of other layers but does not release heat. This means that graphene, which is 300 times stronger than steel, becomes mechanically weaker and can easily break."

The research findings around the h-BN layers show that its mechanical properties are similar to diamond but are much cheaper, more flexible and lighter. It can easily be integrated in tiny electronic circuits or to reinforce structures as it is more robust against shocks or mechanical stress.

Dr Santos commented: "It has been a privilege to work with global researchers to predict and measure multilayer graphene and h-BN in an unprecedented way. It is nearly impossible at present to make major breakthroughs in science without working in collaboration. At Queen's University we have advanced our knowledge of these layered materials and have made some major discoveries, which could help to tackle many global challenges within our society.

"Our key finding is that bilayer graphene develops a super-lubricity state where no heating is generated as the layers slide on top of each other. Just a few materials have these features and it looks like graphene has joined this exclusive club. During this process, we also discovered that h-BN, a common lubricant used in several automotive and industrial applications, developed a mechanical strength in a few layers. These are as strong as diamond, measured in terms of a quantity called Young modulus. This is a truly ground-breaking finding as even an insulator with thin layers could not keep its Young modulus at such high magnitudes.

"There are several possibilities for application of our discoveries which could have a positive impact in the real world. We are looking at a timeline of around five to ten years to transform the discoveries into real products but we could see benefits such as material reinforcement to mixture in solutions such as ink for paint, which would give further strength against corrosion and could potentially mean scratch-proof cars in future.

"This stretchy material could also be used in electronic devices and motor engines to make friction very low, as no heat is released."

Dr Santos added: "In electronics, several companies are currently integrating h-BN in prototypes together with graphene for the creation of smart-devices such as iPads and Androids with unique features. These companies are also incorporating h-BN with polymers to give additional strength for novel mechanical applications such as aerospace, sports and civil engineering.

"We are currently looking for other combinations of 2D crystals which could be used for similar applications. So far, graphene seems the best candidate but there is still much to be explored within the library of layered materials. The future is bright for 2D materials because of the development, progress and research currently being performed worldwide."

###

The findings have recently been published in world-leading nanoscience journal Nature Communications and were discovered by an international collaboration of researchers including: Australia, Deakin University (Dr. Luhua Li, Professor Chen); United States, University of Texas (Professor Qian); Korea, Unist (Professor Ruoff); Japan, Nims (Professor Watanabe); China, Northwestern Polytechnical University (Dr. Zhang), Wenzhou University (Dr. Yang); and Queen's University Belfast (Dr. Santos and Declan Scullion).

Media Contact

Emma Gallagher
emma.gallagher@qub.ac.uk
289-097-5384

 @QueensUBelfast

http://www.qub.ac.uk 

Emma Gallagher | EurekAlert!

Further reports about: 2D materials carbon atoms graphene h-BN rubber rubber material smart-devices

More articles from Materials Sciences:

nachricht Research finds new molecular structures in boron-based nanoclusters
13.07.2018 | Brown University

nachricht 3D-Printing: Support structures to prevent vibrations in post-processing of thin-walled parts
12.07.2018 | Fraunhofer-Institut für Produktionstechnologie IPT

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

Im Focus: Chemical reactions in the light of ultrashort X-ray pulses from free-electron lasers

Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.

Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Research finds new molecular structures in boron-based nanoclusters

13.07.2018 | Materials Sciences

Algae Have Land Genes

13.07.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>