Feasibility study of using surface enhanced Raman scattering (SERS) combined with handheld Raman spectrometer for the detection of nicotine in e-liquids, De Bleye, Charlotte, De Barsy Lise, Barhdadi Sophia, Deconinck Eric, Sacré Pierre-Yves, Hubert Philippe, and Ziemons Eric , GFSV Nivelles 2022, 18-22 May 2022, Issue Groupe Français de Spectroscopie Vibrationnelle (GFSV), Nivelles, Belgium, (2022)