Thermodynamics of Fluid Polyamorphism

dc.contributor.advisorAnisimov, Mikhail Aen_US
dc.contributor.authorAmrhein, Laurenen_US
dc.contributor.departmentChemical Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2017-09-13T05:31:29Z
dc.date.available2017-09-13T05:31:29Z
dc.date.issued2017en_US
dc.description.abstract“Fluid polyamorphism” is the existence of two alternative amorphous structures in a single-component fluid. It is found in very different materials, such as silicon, phosphorus, cerium, and hydrogen, usually at extreme conditions. In particular, this phenomenon is hypothesized in metastable supercooled water, inaccessible for direct bulk-water experiments because it is predicted to be below the empirical limit of homogeneous ice nucleation. I present a generic phenomenological approach to describe polyamorphism in a single-component fluid, applicable regardless of the microscopic origin of the phenomenon. To specify this approach, I consider a fluid with “chemical reaction” equilibrium between two competing interconvertible states or structures. This approach for the physics of liquid-liquid separation in a single-component fluid is based on a discrete nature of two distinct structures. The approach qualitatively describes the global phase diagram of a fluid, with both vapor-liquid and liquid-liquid equilibria, as well as peculiar properties of polyamorphic fluids.en_US
dc.identifierhttps://doi.org/10.13016/M2833MZ7P
dc.identifier.urihttp://hdl.handle.net/1903/19763
dc.language.isoenen_US
dc.subject.pqcontrolledChemical engineeringen_US
dc.subject.pquncontrolledThermodynamicsen_US
dc.titleThermodynamics of Fluid Polyamorphismen_US
dc.typeThesisen_US

Files

Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Amrhein_umd_0117N_18037.pdf
Size:
2.77 MB
Format:
Adobe Portable Document Format