The scientists of Rice University Pulickel Ajayan along with the colleagues of the Indian Institute of Science, Bangalore, have created two-dimensional Gallenene from which flat gallium will be produced automatically with the help of nanoscale electronics.
The researchers said that the material is having a good binding with semiconductors like silicon and can be extracted to two-dimensional form.
Gallium has a low melting point. It cannot be extracted with vapor phase deposition methods like graphene. Gallium gets oxidize quickly. When graphene was removed from the graphite sample with the help of adhesive tape, the bonds that exist between the gallium layers are too strong. The Rice team which was led by co-authors Vidya Kochat who is a former postdoctoral researcher at Rice, and Atlanta Samanta, a student of Indian Institute of Science use the heat in place of force.
The researchers experimented with bulk gallium by heating the metal to 29.7 degree Celsius which is below the elements melting point. This lead to drip gallium onto a glass slide. As it started to get cool, researchers put a flat piece of silicon dioxide on it to bring few flat layers of Gallenene.
The extraction of gallenene into other substrates which include gallium nitride, gallium arsenide, silicone, and nickel. Chandra Sekhar Tiwary, who is the principal investigator on the project, said that “the current work utilizes the weak interfaces of solids and liquids to separate thin 2-D sheets of gallium.”
The plasmonic and other properties of Gallenene’s are studied according to Ajayan. The 2-D metals are difficult to extract as they posses high-strength and non-layered structures. He added that the gallenene is an exception metal that bridges the need of metals in the 2-D world.