= Solution
\b[Deposit a dilute dispersion onto a clean, electron-transparent <TEM> support and let the <ethanol> evaporate.] A practical sequence is to redisperse gently, dilute enough to reduce overlap, place a small drop on a holey or lacey support grid, wick away excess liquid and dry thoroughly. Choose support chemistry compatible with wetting by <ethanol>.
Look for flakes spanning support holes, where no support film obscures the light-element lattice. Adjacent supported regions help locate and stabilize the flakes. Dilution reduces accidental multilayer stacks, while a clean grid and clean <solvent> reduce hydrocarbon background. Gentle agitation may be useful; prolonged aggressive sonication can itself change the defects one intends to measure.
Drying prevents a volatile liquid from entering the microscope <vacuum>. Additional cleaning must be chosen cautiously because heating or energetic <plasma> treatment can alter <oxygen> groups and defects in <reduced graphene oxide>. Record a low-dose survey before atomic-resolution imaging, and distinguish pre-existing defects from changes induced during acquisition.
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