Figure 1
From: Laser Engineered Graphene Paper for Mass Spectrometry Imaging
Schematics of laser engineered graphene paper as a substrate for matrix-free LDI MS detection and imaging of trace amount molecules.
(a) The graphene sheets obtained by reduction of graphene oxide. (b) A digital image of the graphene paper obtained by filtration of graphene sheets. (c) The graphene paper is engineered by pulsed laser irradiation in a selected area. (d) The engineered area (darker black) and untreated area show rough and smooth surface, high and low contact angle, respectively. (e) Digital images of the engineered paper after fabrication, which can be used as a substrate for (f) matrix-free LDI MS detection of trace amount molecules and imaging of stamped micro-patterns.
