Quantum Dotting the ¿i¿ of Inquiry: A Guided Inquiry Approach to Teaching Nanotechnology

• Autores: Timothy A. Laubach, Lee A. Elizondo, Patrick J. McCann, Shahryar Gilani
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 48, Nº. 3, 2010, págs. 186-188
• Idioma: inglés
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• Resumen

  • When illuminating four �mystery� vials of nanoparticle solution with a 405nm light emitting diode LED, four distinct colors related to the peak wavelength of fluorescent emission can be observed.1This 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.