Oak Ridge National Laboratory

They have not found a good way to grow molybdenum disulfide, many try to get the material structure is also inconsistent with the chemical vapor deposition method create molybdenum disulfide particles too small to have useful electrical properties. WWW.cnmN.COM.Cn. But in the new approach, they noted molybdenum disulfide "islands" formed in the furnace is easy, blemishes and even dirt block will appear in the base of the furnace. Rice University graduate Niina? Naye Mei said: "with hexagonal boron nitride or graphene is different, molybdenum disulfide difficult nucleation. However, we found that by toward the base adding any artificial edges nucleation process that can be controlled, and, in between these structures, molybdenum plating disulfide grow better.  new method be grown particles about 100 microns, the nanoscale inside, enough for us to deal with them.
Oak Ridge National Laboratory's team used aberration-corrected scanning transmission electron microscopy to the atomic structure of this new material imaging in order to clearly see individual atoms and changing the electrical properties of the material defects.The laboratory Juan - Carlos? Eddie Robb said: "In order to improve the properties of two-dimensional material, first understand how they are put together is very important. Oak Ridge National Laboratory Microscope equipment so that we can see the material for the first time a single atom.
Rice University researchers estimate that these substances together so there are many ways, not only can be used in the form of two-dimensional layer can also be used in the form of three-dimensional stack.Lou Jun said: "'natural crystal' by the same ingredients together via van der Waals force, and now we can use different ingredients to create a three-dimensional crystal. These different materials have different electrical properties and band gap, the kind of material placed on top of another so that we can obtain a new material - we called van der Waals solids.  stacking order we expected to use any of its put together, it may become the field of materials science a new method.