Rapidly changing shape of the alloy in a way that can be reversed: The chemist has made a new step on the path of development technology can re-configure.
Seeing the words “liquid metal” fans of science fiction will relate to the T-1000 nearly impossible to destroy in amazing legend “Terminator” – constructed from “liquid metal”, can change the shape as you like.
Liquid Metal compound is durable, strong, more than 2.5 times compared to Titanium alloy, while lighter weight. Hard more than 1.5 times more than steel and the weight is also lighter. Hard to be deformed permanently from 2-3 times than the traditional metal. Completely non-corrosive. Lets make the crust thinner but more sure.
A research team at North Carolina State University have made an important first step on the road to fabricate the alloy so on.
By placing a low voltage up liquid conductivity (in this case, aqueous) and adjust its durability, the researchers changed the shape of the drops, alloy gallium-indium in water almost immediately, causing them or spread out into long strips or contraction of the sphere.
Study leader Michael Dickey explained: “By making the metal flow, change shape, we can create the structural transformations”.
Main application that chemists think of is to create the antenna small metal can be adjusted: the same type of material can be deformed to send and receive signals.
Similarly, this material can be used to create the circuit can change the layout of electrical wiring in a natural way, like the nervous system can create or remove the connector certain to maintain an optimal state.
Benoit Grosdidier, a specialist in liquid metal at the University of Lorraine in France, believes that the fillings are now used in the microelectronics industry, will be replaced by the alloy so on.
Benoit Grodidier explained: “The key of the welding process lwell the spread of the weld metal and the “moisten the substrate” similar, so that the liquid metal can replace the toxic metals are in use today (such as lead) or other metals are deficiency”.
For example, tin is often used to weld because of the excellent plasticity of it, however, we are faced with the depletion of tin reserves; the formula to change ductility by placing a voltage promises to replace it with other metals more abundantly.
Michael Dickey admitted: “We are still in the research stage original. However, he stressed the advantages of liquid alloy: alloy this is not the same as mercury, they are not poisonous and can change shape at will”.
Everything that happens at the micro level, derived from the power guaranteed drop of the liquid metal still the stick when it exposed to air or liquid – it determines the final shape of the liquid metal. This force is the surface tension, on the surface of the pond can be observed child fathoms of water (often called spider water) walking on water that the liquid surface without sagging. It is the surface tension of water can bear the weight of fathoms of water.
The surface tension of the alloy gallium-indium seven-fold tension of the water. In contrast with water, dispersion and flow on a number of surfaces, the drops of metal alloy gallium-indium-shaped bridge over most of the surface to minimize the exposure of the surface area with the outside world.
But when these drops of this in an aqueous solution power led is connected to a power source, the metal atoms on the surface of them will react with electrons in the solution to form a layer of oxide. Oxide layer, this can reduce the surface tension of the droplet alloy gallium-indium and affect the shape of the drops, so that the shape of the alloy can be changed by changing the voltage applied to the solution conductivity.
The researchers discovered that oxide intermediary role between the metal and water in the solution conductivity. Michael Dickey explained: “The oxide having the atomic gallium, on the one hand have an affinity with liquid metal; on the other hand, they have the same molecules such as water molecules (hydroxyl group), so we also have hydrophilic properties”. A voltage less than 1 v, can be enough to create a layer of oxide on the surface of the liquid metal reduces the surface tension is close to zero, so that the drops of metal no longer keep the spherical shape of them and become “a puddle”. In addition, researchers can also push the alloy liquid flow in a particular direction, and this change can completely reverse: right after disconnect power, oxide layer disappears, and the alloy returns to its original shape, back into droplets spherical dense within a second.
Alloy liquid can flow along the path, so the researchers set up, and then spread out immediately to become the different shapes as if it has life-like like a robot T-1000 zoom in a level “alum” more.
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