Characterization of a Piezoelectric Buzzer Using a Michelson Interferometer

Autor/inn/en	Lloyd, S.; Paetkau, M.
Titel	Characterization of a Piezoelectric Buzzer Using a Michelson Interferometer
Quelle	In: Physics Teacher, 48 (2010) 9, S.610-611 (2 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0031-921X
DOI	10.1119/1.3517032
Schlagwörter	Science Instruction; College Science; Measurement Equipment; Energy; Scientific Principles; Science Laboratories; Undergraduate Study; Data Collection + Suchen Sie Ihr Suchwort? Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Messinstrument; Energie; Grundstudium; Data capture; Datensammlung
Abstract	A piezoelectric material generates an electric potential across its surface when subjected to mechanical stress; conversely, the inverse piezoelectric effect describes the expansion or contraction of the material when subjected to some applied voltage. Piezoelectric materials are used in devices such as doorbell buzzers, barbeque igniters, and also as the scanning and approach mechanisms in scanning probing microscopy. The assembly of a scanning tunnelling microscope (STM) at Thompson Rivers University has motivated a characterization of the sensitivity and hysteresis of piezoelectric discs using a Michelson interferometer. The investigation uses an interferometer and a simple photodiode circuit to track the fringes. As a possible undergraduate lab, the measurement provides an introduction to piezoelectric materials (including hysteresis), the Michelson interferometer, and data acquisition techniques. (As Provided).
Anmerkungen	American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: pubs@aapt.org; Web site: http://scitation.aip.org/tpt
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10