Creating a Device to Model the Pyroelectric Effects of Tourmaline
| dc.contributor.author | Sahi, Catherine Ann | |
| dc.date.accessioned | 2013-06-17T19:04:50Z | |
| dc.date.available | 2013-06-17T19:04:50Z | |
| dc.date.issued | 2013-05 | |
| dc.description | Thesis completed in partial fulfillment of the requirements for the Alfred University Honors Program. | en_US |
| dc.description | Thesis completed in partial fulfillment of the requirements for the Alfred University Honors Program. | en_US |
| dc.description.abstract | Tourmaline is the crystalline form of the mineral aluminum borosilicate with 3m symmetry. Because tourmaline is a uniaxial polar crystal, it develops a spontaneous charge during a temperature change (pyroelectricity). Since the polar symmetry direction coincides with the long axis of tourmaline crystals, the two ends develop opposite charges. Consequently, a heated crystal suspended by a strand of thread is either attracted or repelled by a second heated crystal, due to the charges on the respective crystals. In this work, the crystals were heated by light sources of differing frequencies including; 650nm (red), 570nm (yellow), 510nm (green), and 475nm (blue) to create various charges. A device was created that demonstrates this effect. This device can be used to show the effects of pyroelectricity in a lab or classroom setting. Effects of the charged crystals were observed. Findings are presented in this work, along with the effects of humidity and ambient conditions on tourmaline's pyroelectric properties. | en_US |
| dc.identifier.uri | http://hdl.handle.net/10829/4415 | |
| dc.language.iso | en_US | en_US |
| dc.rights.uri | https://libraries.alfred.edu/AURA/termsofuse | en_US |
| dc.subject | Honors thesis | en_US |
| dc.subject | Tourmaline | en_US |
| dc.subject | Pyroelectricity | en_US |
| dc.subject | Laboratory experiments | en_US |
| dc.title | Creating a Device to Model the Pyroelectric Effects of Tourmaline | en_US |
| dc.type | Thesis | en_US |
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