This cart demo is about piezoelectricity - how some crystals produce electricity when you squeeze them. Visitors learn about the history of piezoelectricity, how it's used, and how it's applied in nanotechnology. They make electric sparks, handle models and listen to cheesy music.
This is a recording of a NISE Network online brown-bag conversation held in 2014, which focuses on the applications and scientific background behind the following NanoDays 2014 kit activities:
• Exploring Properties - Electric Squeeze
• Exploring Properties - Capillary Action
Presented by: Lizzie Hager-Barnard of the Lawrence Hall of Science
For more information, and for a link to the recording, please see the Resources section of this page.
"Exploring Properties - Electric Squeeze" is a hands on activity in which visitors investigate the properties of piezoelectric materials. They learn that piezoelectric materials have the special property to create electricity when their shape is changed and that when electricity is passed through them, they change shape.