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Science 27 November 1998:
Vol. 282. no. 5394, p. 1609
DOI: 10.1126/science.282.5394.1609c
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Metals make fine mirrors in many wavelength ranges, but for certain applications low-dielectric materials may be preferred. Fink et al. (p. 1679) show theoretically that stacking alternating layers of materials with different dielectric constants can produce materials that are reflectors over a particular range of wavelengths, and they demonstrate high reflectivity for wavelengths from 10 to 15 micrometers with a material made from alternating layers of polystyrene and tellurium. This approach opens up the possibility of tuning the wavelength range of coatings for transparency and reflectivity.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)