Vapor growth of mercuric iodide tetragonal prismatic crystals
dc.contributor.author | Ariesanti, Elsa | |
dc.date.accessioned | 2013-10-18T14:50:26Z | |
dc.date.available | 2013-10-18T14:50:26Z | |
dc.date.graduationmonth | December | en_US |
dc.date.issued | 2013-10-18 | |
dc.date.published | 2011 | en_US |
dc.description.abstract | The effect of polyethylene addition on the growth of mercuric iodide (HgI[supscript]2) tetragonal prismatic crystals is examined. Three types of polyethylene powder are utilized: low molecular weight (¯Mw ~ 4 x 103), ultra high molecular weight (¯Mw ~ 3 x 6 106), and spectrophotometric grade polyethylenes. Among these types of polyethylene, the low molecular weight polyethylene produces the most significant change in HgI[supscript]2 morphology, with {110} being the most prominent crystal faces. Thermal desorption - gas chromatography/mass spectroscopy (TD-GC/MS) studies show that thermal desorption of the low molecular weight polyethylene at 100°C and 150°C produce isomers of alkynes, odd nalkanes, and methyl (even-n) alkyl ketones. HgI[supscript]2 growth runs with n-alkanes, with either neicosane, n-tetracosane, or n-hexatriacontane, cannot replicate the crystal shapes produced during growth with the low molecular weight polyethylene, whereas HgI[supscript]2 growth runs with ketones, with either 3-hexadecanone or 14-heptacosanone, produce HgI[supscript]2 tetragonal prismatic crystals, similar to the crystals grown with the low molecular weight polyethylene. C-O double bond contained in any ketone is a polar bond and this polar bond may be attracted to the mercury atoms on the top-most layer of the {110} faces through dipoledipole interaction. As a result, the growth of the {110} faces is impeded, with the crystals elongated in the [001] direction and bounded by the {001} faces along with large, prismatic {110} faces. | en_US |
dc.description.advisor | Douglas S. McGregor | en_US |
dc.description.degree | Doctor of Philosophy | en_US |
dc.description.department | Department of Mechanical and Nuclear Engineering | en_US |
dc.description.level | Doctoral | en_US |
dc.identifier.uri | http://hdl.handle.net/2097/16693 | |
dc.language.iso | en_US | en_US |
dc.publisher | Kansas State University | en |
dc.subject | Mercuric iodide | en_US |
dc.subject | Vapor growth | en_US |
dc.subject | Horizontal furnace | en_US |
dc.subject | Faile method | en_US |
dc.subject.umi | Materials Science (0794) | en_US |
dc.subject.umi | Nuclear Engineering (0552) | en_US |
dc.title | Vapor growth of mercuric iodide tetragonal prismatic crystals | en_US |
dc.type | Dissertation | en_US |