Could coating silver inside of a cuvette be used for SERS? I understand that molecules adsorbed to a coinage metal surface experience plasmonic enhanced Raman shifts and I have a spectrometer that I would like to perform SERS measurements with but do not have a Raman microscope/probe. I do have a light-tight cuvette cell and I am wondering if I could coat the inside of a cuvette on two sides with silver to obtain SERS spectra of liquids? This is a standard 1x1 cm cuvette and the SMA cable going to the spectrometer has a long pass filter installed for the correct wavelength.

Most of the literature I have read points to using a suspension of silver nanoparticle colloids mixed with the analyte liquid within the cuvette to obtain SERS spectra, but I have not been able to find any papers that use what I am proposing.
from theory this should work what you have scatched here. When it comes to SERS a main point is, that you got a surface which is rough enough that you can create mini hot-spots for the electric field. This will give you the enhancement.
Maybe you must put a little bit of work in you set up. The scattering is needed to arrive at the detector. maybe you try a Raman probe or do a other angle for the wall with silver on it.
Best regards!