Sunday, 23 September 2018

New Molecular Wires to help Shrink Your Devices

Molecular Wires
Since gadgets and the like first came out, scientists all over the world are in a race to shrink their sizes. It is not enough that you hold the device in your hand or fit it into your bag, they just have to get smaller. But smaller is not the only criterian, theses gadgets or gizmos have to perform better and with better battery life. To achieve this aim, scientists have tried making each and every component in the gizmo smaller and one such part is molecular wires.

Scientists at Tokyo institute have developed a new form of wire that not is smaller than their predecessor but is also better at conducting electricity. These new form of molecular wires are filled with organometallic ruthenium which gives it better conducting. The current forms of molecular wires are much different to the ones invented by the scientists up at Tokyo. In the sense, that these new molecular wires get their high conducting power from a different source.

Molecular Wires in Tiny Devices: 


As devices get smaller, their component parts also get smaller, that’s a no brainer. But molecular wires are just the building blocks in such devices and maybe one of the most important yet fundamental of all parts.

By carefully designing these molecules, scientists have tried to make beeter contraptions for us to use.

The New form of Molecular Wires: 


These new form of molecular wires are in the form of a metal- electrode- molecular- metal- electrode junction. This includes a polyene molecule which is an organic chain like molecule.
These new form of molecular wires are based on the engineering of the energy levels of the conducting orbitals in the wire.

Is the new form of Molecular Wires better? 

 

Scientists used scanning tunneling microscopy to understand the level of conductance in these new form of molecular wires. What they found was that these new molecular wires are better than the standard or other fully organic molecular wires.

This brought scientists to explore the origins of the superior conductivity in molecular wires. They found that the properties that gave these molecular wires their high conducting properties came from orbital splitting in the molecular wires.

This orbital splitting brings about changes in original electron orbitals in the atoms of the molecular wires to make a new hybrid orbital. This new form of orbital facilitates electron transfer between mental electrodes and molecular wires.

This finding is rare to see in current MMM junctions.

What gives these Molecular wires their Higher conductance: 


The most important factor that gives these molecular wires their higher conductivity is the narrow gap between the highest and lowest molecular orbitals. The new technique formulated by scientists in making these molecular wires exploits this knowledge in enhancing the molecular wires conductivity.

Using the same MMM junction in these molecular wires along with the extremely narrow gap between the highest and lowest orbitals, scientist have come up with a new form of molecular wires that has unprecedented levels of conductance.

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