The electronic components (resistors, sensors, Arduino microcontrollers etc…) come from Radionics or Farnell and the chemicals usually come from Sigma Aldrich. The specialised equipment like a source meter (to read current & voltage) comes from Keithley and the optical components (spectrometer, optical fibre…) came from Ocean Optics.
However, I don’t have a very high budget to spend, so I tend to “borrow” equipment and materials from other groups.
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