Science et Technique
Follow
Find
2.2K views | +0 today
 
Scooped by David Varenne
onto Science et Technique
Scoop.it!

Scientists developed a way to grow iron-oxidizing bacteria using electricity instead of iron

Scientists developed a way to grow iron-oxidizing bacteria using electricity instead of iron | Science et Technique | Scoop.it
The method, called electrochemical cultivation, supplies these bacteria with a steady supply of electrons that the bacteria use to respire, or "breathe." It opens the possibility that one day electricity generated from renewable sources like wind...
more...
No comment yet.
Your new post is loading...
Your new post is loading...
Scooped by David Varenne
Scoop.it!

Researchers discover new phase of boron nitride and a new way to create pure c-BN

Researchers discover new phase of boron nitride and a new way to create pure c-BN | Science et Technique | Scoop.it

Researchers have discovered a new phase of the material boron nitride, which has potential applications for both manufacturing tools and electronic displays.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Scientists create graphene barrier to precisely control molecules for making nanoelectronics

Scientists create graphene barrier to precisely control molecules for making nanoelectronics | Science et Technique | Scoop.it

Gardeners often use sheets of plastic with strategically placed holes to allow their plants to grow but keep weeds from taking root.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Bismuth-based nanoribbons show 'topological' transport, potential for new technologies

Bismuth-based nanoribbons show 'topological' transport, potential for new technologies | Science et Technique | Scoop.it

Researchers have created nanoribbons of an emerging class of materials called topological insulators and used a magnetic field to control their semiconductor properties, a step toward harnessing the technology to study exotic physics and building...

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Novel metasurface revolutionizes ubiquitous scientific tool: Ultra-compact polarimeter could improve telecommunications, medical diagnostics and drug testing

Novel metasurface revolutionizes ubiquitous scientific tool: Ultra-compact polarimeter could improve telecommunications, medical diagnostics and drug testing | Science et Technique | Scoop.it

Researchers have built a polarimeter on a microchip, revolutionizing the design of this widely used scientific tool.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Leaf-mimicking device harnesses light to purify water

Leaf-mimicking device harnesses light to purify water | Science et Technique | Scoop.it

For years, scientists have been pursuing ways to imitate a leaf's photosynthetic power to make hydrogen fuel from water and sunlight.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Polymer puts new medical solutions within reach

Polymer puts new medical solutions within reach | Science et Technique | Scoop.it

Combining the properties of liquid crystals and hydrogels in just the right proportions creates the potential for new materials that have the same mechanical properties as soft tissues in the body.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

New industrial possibilities for nanoporous thin films

New industrial possibilities for nanoporous thin films | Science et Technique | Scoop.it

Metal-organic frameworks (MOFs) are a new type of materials with nanoscale pores.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Des matériaux de construction innovants et méconnus

Des matériaux de construction innovants et méconnus | Science et Technique | Scoop.it

Carrelage écologique, béton LiTraCon, briques BetR-blok... Voici des matériaux innovants qui permettront peut-être de construire la maison de demain.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

A mixed-cation lead mixed-halide perovskite absorber for tandem solar cells

Metal halide perovskite photovoltaic cells could potentially boost the efficiency of commercial silicon photovoltaic modules from ∼20 toward 30% when used in tandem architectures.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Microwaves improve green workings of materials used to clean wastewater

A new method for making the material used for cleaning wastewater makes the production process greener - and 20 times faster. Researchers show how using microwaves can reduce the temperature and pressure needed to make photocatalysts.
more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Solar water splitting: Putting an extra 'eye' on surface reactions that store sunlight as fuel

Water-splitting cells absorb sunlight and produce fuel. Creating such cells means pairing a material to absorb sunlight and generate electrons with the one that uses those electrons to produce fuel.
more...
No comment yet.
Scooped by David Varenne
Scoop.it!

New research exploits extraordinary properties of graphene

Innovative new research has demonstrated how the extraordinary properties of graphene can be exploited to create artificial structures that can be used to control and manipulate electromagnetic radiation over a wide range of wavelengths.
more...
No comment yet.
Rescooped by David Varenne from Amazing Science
Scoop.it!

Discovery advances biowaste conversion to jet fuel

Discovery advances biowaste conversion to jet fuel | Science et Technique | Scoop.it
Researchers at Washington State University Tri-Cities have figured out a way to successfully convert a common wood byproduct into hydrocarbon molecules that could be used as jet fuel.

Via Dr. Stefan Gruenwald
more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Adjusting production processes in real time

Adjusting production processes in real time | Science et Technique | Scoop.it

Industry 4.0 requires comprehensive data collection in order to control highly automated process sequences in complex production environments. One example is the cultivation of living cells.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Energy Harvesting via Smart Materials

Energy Harvesting via Smart Materials | Science et Technique | Scoop.it

A group of smart materials known as "electrostrictive polymers" have been explored for their potential mechanical energy harvesting abilities.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Electronically connected graphene nanoribbons foresee high-speed electronics: Chemical interconnection bridges electronic properties of graphene-nanoribbons with zigzag-edge features

Electronically connected graphene nanoribbons foresee high-speed electronics: Chemical interconnection bridges electronic properties of graphene-nanoribbons with zigzag-edge features | Science et Technique | Scoop.it

An international research team succeeded in chemically interconnecting chiral-edge graphene nanoribbons with zigzag-edge features by molecular assembly, and demonstrated electronic connection between graphene nanoribbons.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Réseaux électriques intelligents : défis technologiques et moyens de mesure | Techniques de l'Ingénieur

Réseaux électriques intelligents : défis technologiques et moyens de mesure | Techniques de l'Ingénieur | Science et Technique | Scoop.it

Réseaux électriques intelligents : défis technologiques et moyens de mesure par Hervé NDILIMABAKA : base documentaire scientifique et technique - Techniques de l'Ingénieur...

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Nanoscale look at why a new alloy is amazingly tough: Team learns secrets of high entropy alloy

Nanoscale look at why a new alloy is amazingly tough: Team learns secrets of high entropy alloy | Science et Technique | Scoop.it

Several mechanisms that make a new, cold-loving material one of the toughest metallic alloys ever have been uncovered by a team of researchers.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Bacteria, electrons spin in similar patterns: Bacteria streaming through a lattice behave like electrons in a magnetic material

Bacteria, electrons spin in similar patterns: Bacteria streaming through a lattice behave like electrons in a magnetic material | Science et Technique | Scoop.it

Scientists have identified an unexpected shared pattern in the collective movement of bacteria and electrons: As billions of bacteria stream through a microfluidic lattice, they synchronize and swim in patterns similar to those of electrons...

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Spintronics, low-energy electricity take a step closer: A new class of topological insulators discovered

Spintronics, low-energy electricity take a step closer: A new class of topological insulators discovered | Science et Technique | Scoop.it

Scientists have discovered a new topological insulator that could be used in future electronic technologies.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Carbon Capture and Storage Liquified and Demystified

Carbon Capture and Storage Liquified and Demystified | Science et Technique | Scoop.it

One way to take the greenhouse gas carbon dioxide out of the air is to concentrate and store it underground. Scientific American explains how one company plans to do it.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Internet des objets : des capteurs sans batterie pour réduire la consommation | Techniques de l'ingénieur

Internet des objets : des capteurs sans batterie pour réduire la consommation | Techniques de l'ingénieur | Science et Technique | Scoop.it

Dans quelques années, la planète sera recouverte par des objets connectés. Selon Cisco, il y en aura 50 milliards en 2020. Pour être alimentés, tous ces capteurs devront trouver une source d'énergie.

more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Improvements in wear resistance of metallic materials by using laser

The beneficial effects of a new technique that extends the useful life of stainless steels, aluminum alloys and titanium has been demonstrated by researchers.
more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Un textile lumineux pourrait dépolluer l'air ambiant

Un textile lumineux pourrait dépolluer l'air ambiant | Science et Technique | Scoop.it
Une équipe de chercheurs lyonnais a mis au point un textile capable d’absorber certains polluants présents dans l’environnement, grâce à une source de lumière (des Led), des fibres optiques pour la diffuser et un photocatalyseur.
more...
No comment yet.
Scooped by David Varenne
Scoop.it!

Photonic 'sintering' may create new solar, electronics manufacturing technologies

Engineers have made a fundamental breakthrough in understanding the physics of photonic 'sintering,' which could lead to many new advances in solar cells, flexible electronics, various types of sensors and other high-tech products printed onto...
more...
No comment yet.