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ERIC Number: EJ876123
Record Type: Journal
Publication Date: 2010-Mar
Pages: 3
Abstractor: As Provided
ISSN: ISSN-0031-921X
Quantum Dotting the "i" of Inquiry: A Guided Inquiry Approach to Teaching Nanotechnology
Laubach, Timothy A.; Elizondo, Lee A.; McCann, Patrick J.; Gilani, Shahryar
Physics Teacher, v48 n3 p186-188 Mar 2010
When illuminating four "mystery" vials of nanoparticle solution with a 405-nm light emitting diode (LED), four distinct colors related to the peak wavelength of fluorescent emission can be observed. This phenomenon perplexes high school physics students and leads to the subsequent exploratory question, "Why are the four vials emitting a different color light if they all contain the same material and are illuminated with the same light source?" That question gives students the opportunity to collect and analyze data, which leads to the development of the inherent scientific concept that the color of the emitted light depends on the size of the material (quantum dot) suspended in solution.
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Elementary Secondary Education; High Schools; Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A