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.
Check out this open source design for a spectrometer built out of Legos. You can use their designs to 3D print your own Legos and follow the online assembly instructions (or forge your own path!). Or you can buy a kit starting at $30 and running up to $85 for a kit with a Raspberry Pi and […]