Credit: Tour Group/Rice University.
Rice University scientists have extended their technique to produce graphene in a flash to tailor the properties of other 2D materials.
The labs of chemist James Tour and materials theorist Boris Yakobson reported in the American Chemical Society’s ACS Nano they have successfully “flashed” bulk amounts of 2D dichalcogenides, changing them from semiconductors to metallics.
Such materials are valuable for electronics, catalysis and as lubricants, among other applications.
The process employs flash Joule heating using an electrical charge to dramatically raise the material’s temperature to convert semiconducting molybdenum disulfide and tungsten disulfide.
The duration of the pulse and select additives can also control the now-metallic products’ properties.
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IMAGE: While studying a thin-film material called strontium stannate (SrSnO3), University of Minnesota researchers noticed the surprising formation of checkerboard patterns at the nano scale similar to structures fabricated in costly,. view more
Credit: Credit: Jalan Group, University of Minnesota
A team led by University of Minnesota Twin Cities researchers has discovered a groundbreaking one-step process for creating materials with unique properties, called metamaterials. Their results show the realistic possibility of designing similar self-assembled structures with the potential of creating built-to-order nanostructures for wide application in electronics and optical devices.
The research was published and featured on the cover of
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IMAGE: Rice University scientists extended their technique to produce graphene in a flash to tailor the properties of 2D dichalcogenides molybdenum disulfide and tungsten disulfide, quickly turning them into metastable metallics. view more
Credit: Tour Group/Rice University
HOUSTON - (Jan. 11, 2021) - Rice University scientists have extended their technique to produce graphene in a flash to tailor the properties of other 2D materials.
The labs of chemist James Tour and materials theorist Boris Yakobson reported in the American Chemical Society s
ACS Nano they have successfully flashed bulk amounts of 2D dichalcogenides, changing them from semiconductors to metallics.
Such materials are valuable for electronics, catalysis and as lubricants, among other applications.
In a new book, science historian M. Susan Lindee of the School of Arts & Sciences explores the interplay between scientific progress and violence in modern war.
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IMAGE: Scanning electron micrographs of the biological (left) and geological (right) calcite crystals after they were indented with a sharp diamond tip under the same amount of force (0.5 N). Note. view more
Credit: Virginia Tech
Ling Li, an assistant professor in mechanical engineering at Virginia Tech, has found insights into building stronger and tougher ceramics by studying the shells of bivalve mollusks.
This perspective is formed by looking at the capacity of the basic mineral building blocks in the shell to anticipate fractures, instead of focusing only on the shape and chemistry of the structure. The results of his group s findings were published in the Nov. 10, 2020, issue of