Dielectric Measurement and Analysis of Ultrastable PMMA Glass
| dc.contributor.author | Cai, Zhaohui | |
| dc.date.accessioned | 2022-02-09T18:44:37Z | |
| dc.date.available | 2022-02-09T18:44:37Z | |
| dc.date.issued | 2022-02-09 | |
| dc.date.submitted | 2022-02-03 | |
| dc.description.abstract | A stable glass, distinguished from an ordinary glass, has phenomenal characteristics such as a high density and a high kinetic stability. In this project, stable glasses of poly(methyl methacrylate) (PMMA) are produced by physical vapor deposition (PVD), and the dielectric responses of the vapor-deposited PMMA glasses are measured at 1 kHz with a high precision capacitance bridge. Measurements of the dielectric loss and storage have been done by heating and cooling the vapor-deposited PMMA glasses, where the heating and cooling cycles are used to rejuvenate the vapor-deposited PMMA glasses and to directly compare stable and nominally rejuvenated glasses. A noticeable suppression in β relaxation peak could be observed in the dielectric loss curve for vapor-deposited glasses (stable glasses) as compared to that for rejuvenated glasses (ordinary glasses). This finding implies that the glass stability essentially influences the dielectric relaxation. | en |
| dc.identifier.uri | http://hdl.handle.net/10012/18066 | |
| dc.language.iso | en | en |
| dc.pending | false | |
| dc.publisher | University of Waterloo | en |
| dc.title | Dielectric Measurement and Analysis of Ultrastable PMMA Glass | en |
| dc.type | Master Thesis | en |
| uws-etd.degree | Master of Science | en |
| uws-etd.degree.department | Physics and Astronomy | en |
| uws-etd.degree.discipline | Physics (Nanotechnology) | en |
| uws-etd.degree.grantor | University of Waterloo | en |
| uws-etd.embargo.terms | 0 | en |
| uws.contributor.advisor | Forrest, James | |
| uws.contributor.affiliation1 | Faculty of Science | en |
| uws.peerReviewStatus | Unreviewed | en |
| uws.published.city | Waterloo | en |
| uws.published.country | Canada | en |
| uws.published.province | Ontario | en |
| uws.scholarLevel | Graduate | en |
| uws.typeOfResource | Text | en |