Standard gold or tin on carbon resolution specimens may not be suitable for operating at low accelerating voltages or for use with older instruments.
This may be due to inferior resolution at low voltage or poor signal-to-noise ratio when operating at high scanning rates with small spot sizes. The larger gold islands give high contrast while retaining small gaps for resolution measurement, making this specimen easier to use at non-optimal operating conditions. Particle size range from approximately <30 - 300nm.
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