Though computer modeling had by the early 1990s suggested these massive atmospheric upwellings were caused by thermal instability, in 2015 two Caltech planetary scientists proposed a more detailed mechanism.
12.
However, due to the complex atomic structure of grapheneoxides ( GOs ) and thermal instabilities of hydrogenated graphenes ( CHs ) even at low temperatures, search for the novel graphene-based materials is still continuing.
13.
Refluxing single-layer graphene oxide ( SLGO ) in solvents leads to size reduction and folding of individual sheets as well as loss of carboxylic group functionality, by up to 20 %, indicating thermal instabilities of SLGO sheets dependent on their preparation methodology.
14.
Water, hydrogen sulfide, and hydrogen selenide may be made by heating their constituent elements together above 350 �C, but hydrogen telluride and polonium hydride are not attainable by this method due to their thermal instability; hydrogen telluride decomposes in moisture, in light, and in temperatures above 0 �C . Polonium hydride is very unstable, and due to the intense radioactivity of polonium ( resulting in self-radiolysis upon formation ), only trace quantities may be obtained by reacting dilute hydrochloric acid with polonium-plated magnesium foil.
