Sciences & Technology
3.6K views | +0 today
Follow
Sciences & Technology
Veille sur les évolutions des sciences et des technologies
Curated by Terheck
Your new post is loading...
Your new post is loading...
Scooped by Terheck
Scoop.it!

Completely new kind of polymer developed

Completely new kind of polymer developed | Sciences & Technology | Scoop.it

"Imagine a polymer with removable parts that can deliver something to the environment and then be chemically regenerated to function again. Or a polymer that can lift weights, contracting and expanding the way muscles do (...)"

more...
No comment yet.
Scooped by Terheck
Scoop.it!

Healable Supramolecular Polymers as Organic Metals - Journal of the American Chemical Society (ACS Publications)

Healable Supramolecular Polymers as Organic Metals - Journal of the American Chemical Society (ACS Publications) | Sciences & Technology | Scoop.it

"Organic materials exhibiting metallic behavior are promising for numerous applications ranging from printed nanocircuits to large area electronics. However, the optimization of electronic conduction in organic metals such as charge-transfer salts or doped conjugated polymers requires high crystallinity, which is detrimental to their processability. To overcome this problem, the combination of the electronic properties of metal-like materials with the mechanical properties of soft self-assembled systems is attractive but necessitates the absence of structural defects in a regular lattice (...)"

more...
No comment yet.
Rescooped by Terheck from Café des Sciences
Scoop.it!

Le carbone pyrolytique, c’est fantastique

Le carbone pyrolytique, c’est fantastique | Sciences & Technology | Scoop.it

Découvert l'existence d'une forme de carbone méconnue : le carbone pyrolytique. C'est un empilement de couches de graphène moins régulier que dans le graphite *.

 

Les propriétés de ce matériau sont vraiment étonnantes.


Via Goulu
more...
No comment yet.
Rescooped by Terheck from Biosciencia News
Scoop.it!

Champion nano-rust for producing solar hydrogen

Champion nano-rust for producing solar hydrogen | Sciences & Technology | Scoop.it
EPFL and Technion researchers have figured out the "champion" nanostructures able to produce hydrogen in the most environmentally friendly and cheap manner, by simply using daylight.

Via Biosciencia
more...
Biosciencia's curator insight, July 8, 2013 4:14 AM

Evidently, the long-term goal is to produce hydrogen – the fuel of the future – in an environmentally friendly and especially competitive way. For Michael Grätzel, "current methods, in which a conventional photovoltaic cell is coupled to an electrolyzer for producing hydrogen, cost 15 € per kilo at their cheapest. We're aiming at a € 5 charge per kilo".

Scooped by Terheck
Scoop.it!

Highly conductive organic metal looks promising for disposable electronic devices

Highly conductive organic metal looks promising for disposable electronic devices | Sciences & Technology | Scoop.it

"(Phys.org) —Although organic materials are often used as semiconductors, such as in organic LEDs and organic transistors, organic materials that have an electrical conductivity as high as that of metals are still very scarce. One problem with developing organic metals is that there is a tradeoff in terms of their crystalline structure: a high crystallinity is required for high conductivity, but is detrimental to the materials' processability. (...)"

more...
No comment yet.
Scooped by Terheck
Scoop.it!

Electrostatics do the trick: Simple model describes what happens between organic semiconductors and metals

Electrostatics do the trick: Simple model describes what happens between organic semiconductors and metals | Sciences & Technology | Scoop.it
Organic semiconductors allow for flexible displays, solar cells, and other applications. One common problem in these devices, however, is the interface between the metallic contacts and the organic semiconductor material, where undesirable losses occur. Now researchers have shown what these losses depend upon.

 

From :

Helmholtz-Zentrum Berlin für Materialien und Energie. "Electrostatics do the trick: Simple model describes what happens between organic semiconductors and metals." ScienceDaily. ScienceDaily, 23 June 2014. <www.sciencedaily.com/releases/2014/06/140623104257.htm>.

more...
No comment yet.
Scooped by Terheck
Scoop.it!

Le borophène devient un possible concurrent du graphène

Le borophène devient un possible concurrent du graphène | Sciences & Technology | Scoop.it

"Des chercheurs de l’université Brown aux États-Unis viennent de démontrer qu’une feuille d’une épaisseur d'un atome de bore était possible. Leurs résultats ont été publiés dans la revue Nature Communications. Concrètement, ils ont réussi à arranger 36 atomes de bore ensemble, montrant que les modèles théoriques établis par la communauté scientifique avant leur expérience étaient corrects. Ce n’est pas un borophène, mais on s’y approche..."

 

English article : http://www.nature.com/ncomms/2014/140120/ncomms4113/full/ncomms4113.html

more...
No comment yet.