Raman spectroscopy is a technique in which light from a laser interacts with a sample to shift the laser wavelength. Recording the shifts with a spectrometer gives information about the sample. We’ve covered general cheap spectroscopy more than once here. OpenRAMAN is a project to assemble a Raman spectroscopy setup using about $3000 in (mostly […]
Want to do portable florescence spectroscopy on the cheap? Hojeong Yu, Yafang Tan, and Brian T. Cunningham wrote a 2014 paper that demonstrates that a smartphone camera, attached to a set of optical components that provide wavelength dispersion and a green laser pointer, can function as a sensitive fluorescence spectrometer.