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Liquid Crystals: LCD Displays (a 6-page activity for community college students by Dan Damelin)
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Interactive, scaffolded model
Launch Activity |
 | Overview and Learning ObjectivesStudents discover the unique nature of liquid crystal molecules, effectively another state of matter, and how they behave in electric fields. They experiment with the effect of polarity of crystals, and the intensity and direction of electric fields on liquid crystals. Students will be able to: • explain how a liquid crystal relates to other states of matter; • draw or describe the behavior of liquid crystals in an electric field; • give an overview of how an LCD panel works. |
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 | Assessmenthttp://www.concord.org/~barbara/workbench_web/pdf/LCD_assessment8.07bt.pdf A version of this assessment is found in the Activity section of Molecular Workbench. Rubric for scoring: http://www.concord.org/~barbara/workbench_web/pdf/LCD_assesmentRubric8.07bt.pdf |
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 | Central ConceptsKey Concept: Molecules of a particular shape and charge, called liquid crystals, have unique optical properties that have proven useful in recent manufacturing processes. Additional Related Concepts |
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 | Macro Micro LinkLinks are made from molecules with particular properties to liquid crystal displays in computer monitors and flat panel televisions, thermometers, and even mood rings. |
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 | Activity CreditsCreated by CC: Molecular Literacy using Molecular Workbench + Pedagogica |
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