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Showing 1 to 20 of 30 for “"order-disorder transition"”.
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The Thermal Expansion of Ammonium-Chloride Near The Order-Disorder Transition
Made available in DSpace on 2015-05-12T21:41:54Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7013317.PDF: 1632496 bytes, checksum: 1156d0c31f173690e869ea8ee4121a9c (MD5) Previous issue date: 1969
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The Heat Capacity of Ammonium-Chloride Near The Order-Disorder Transition
Made available in DSpace on 2015-05-12T21:41:55Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7013476.PDF: 1850099 bytes, checksum: d15e1e1c376019cdb5a1afbd4a90868d (MD5) Previous issue date: 1969
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The heat capacity of ammonium chloride near the order-disorder transition
… the behavior of ammonium chloride near the first order phase transition at 240K in terms of· a physical model that has singular and nonsingu1ar parts of the free energy coupled together. The singularity is normally associated with a second order phase transition, but it can lead to a first order …
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The thermal expansion of ammonium chloride near the order-disorder transition
… the volume of ammonium chloride near the first order transition at 242°K. This theory is able to account for a first order transition by considering the coupling between an elastic lattice system and the order-disorder system. The lattice system gives rise to non-singular terms in the Helmholz …
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Specific heat of the order-disorder transition in beta-brass and its relation to the Ising Model
"The specific heat Cp of beta-brass near its order-disorder transition has been measured with very high resolution. An ac calorimetry technique was used to make these measurements on ~-brass samples of varying composition. Cv Was then determined from Cp by use of the Pippard relations. The …
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Spin-polarized low energy electron diffraction studies of Cu¿Au(001)
… acquisition of PLEED I-V and P-V spectra. The order-disorder transition at the Cu,Au(1) surface, near the bulk transition temperature (at Tc=391°C), seems only slightly to affect PLEED profiles. The polarization of the (1) beam has been studied as a function of temperature between room …
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Self-assembly of Block Polymers: Self-Consistent Field Theory and Monte-Carlo Simulations
… length scales to form a wide variety of ordered structures. The resulting nanostructures have been instrumental in the development of several advanced technologies such as separation membranes and photonic crystals. This thesis focuses on three diverse problems that use self-consistent …
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Resistivity and specific heat measurements near phase transitions in metals
… be proportional to the specific heat through its order-disorder transition temperature of 466°C. This is in agreement with an extension of the theoretical prediction that the quantities should be proportional in a magnetic system. Measurements of the specific heat and resistivity derivative on the …
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Computational structure analysis of multicomponent oxides
… techniques are used to understand the cation ordering patterns of multicomponent oxides. Specifically, the lithium ion battery cation material LiNi0.5Mn0.5O2 and the thermoelectric material P2-NaxCoO2 (0.5 =/< x =/< 1) are investigated in the course of this research. It is found that at low …
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The Scattering of Electrons by Vacancies Through the Order-Disorder Transitions in Vanadium Carbide
Submitted by Jesse Garrison (jagarris@illinois.edu) on 2012-01-09T20:39:43Z No. of bitstreams: 1 1972_shacklette.pdf: 4172666 bytes, checksum: 4ad6c715074bc79feff351c227f8ac6d (MD5)
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Self-assembly of globular protein-polymer diblock copolymers
… cylinders, lamellae, perforated lamellae, weakly ordered nanostructures and a disordered phase are observed. Surprisingly, a lyotropic re-entrant order-disorder transition is observed in all materials between 30 and 70 wt% indicating the solvent-mediated effective interaction potential is …
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Puncture Reversal of Polyethylene Ionomers - Mechanistic Studies
… and React-A-Seal® showed the characteristic order-disorder transition at ~52°C that has been reported in literature. Master curves were constructed from the creep isotherms for the four EMAA samples. An aging study was performed to investigate the irreproducibility and ®tailing effect” …
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Fluctuations and Instantons in Complex Landscapes: From Ligand Unbinding to Proton Transfer
… "stiffening" of the holo sRBP, reflecting an "order-disorder" transition in the protein. The third and fourth chapters of this dissertation entail ab initio molecular dynamics (AIMD) and quantum Monte Carlo methods (QMC) for computational enzymology. An ideal system for the application of AIMD, …
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On the role of conformational flexibility in viral fusion mechanisms - fusion by disorder
… membranes through large scale conformational transitions. Although pre-fusion and post-fusion structures have been experimentally determined for many viral fusion proteins, specific structural details about how they transition between these states have remained challenging to probe both …
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Controlling nanostructures of globular protein-polymer block copolymers in bulk solutions and in thin films
… different hydrogen bonding capabilities change order-disorder transition concentrations in solution and the type of nanostructures formed. Bioconjugates with a weakly segregating polymer block are found to form a double gyroid structure with Ia3d symmetry, as opposed to perforated lamellae of …
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Mesoscale simulation of block copolymer phase separation and directed self-assembly processes: Applications for semiconductor manufacturing
… that a decrease in simulation time of up to 4 orders of magnitude was achieved. The effect of box size on allowable pitches for a lamellar forming BCP was derived and demonstrated. It was found that more elongated boxes yielded more possible pitches and more accurate results. A short study on …
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Low Energy Order-To-Disorder Transition Pathways In Phase-Change Nanowires
… debated with many studies claiming it to be an order-to-order transition.In this study, we attempt to further lower the current density for the crystal-amorphous transformation by multiple strategies: pre-inducing defects in the nanowire by a size-mismatched dopant, synthesizing self-assembled …
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Development of Sustainable Thermoplastic Elastomers
… room temperature and were processable above the order-disorder transition (ODT) temperature. The alkyl side-chain length of the polyacrylates (as well as the related midblock composition of SAS) was utilized as a convenient parameter for tuning the physical properties of SAS, including the …
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Studies of ordering on surfaces and in superlattices by molecular beam epitaxy
… MBE, was used in two different ways to study the ordering of materials on an atomic scale. In one application the ordering of close packed planes into hcp or fcc structures, or polytype stacking sequences was investigated by periodically alternating growth of Ir and Ru to produce single crystal …
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Phase behavior and ordering kinetics of block copolymers in solution during solvent removal
… understand and to facilitate the modeling of the ordering kinetics of block copolymers in solution during the extraction of solvent from a solution-cast film. Central to this work was determining a suitable method for measuring the ordering kinetics during solvent removal and being able to …
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