A new method for measuring the refractive index of micrometre-sized particles

Microparticles feel the pinch (Oct 20)
http://physicsweb.org/article/news/10/10/13

A new method for measuring the refractive index of micrometre-sized
particles has been developed at AustraliaâEUR(TM)s University of
Queensland. The technique involves laser trapping in optical tweezers
and could lead to significant improvements in the study of a wide range
of microparticles including single biological cells, paint pigments and
smog (Phys Rev Lett 97 157402).

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