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(Color online) (a) SEM image of a sample used for compositional analysis. (b) Evolution of gold purity with different beam currents and water vapor pressures.
SEM imaging of a matrix deposited on Si substrate under high vacuum before (a) and after (b) annealing.
(Color online) Dark field imaging of a matrix deposited (a) on an ITO substrate. (b) on an ITO substrate coated with Ti, and (c) on a glass substrate coated with Ti.
Evolution with the deposition time of the dot diameter and height on Ti coated glass substrate before and after annealing.
(Color online) (a) Scattering dark-field spectroscopy on matrices deposited with two different deposition times (8 and ) on Ti coated glass substrate (beam current of , high vacuum) before and after annealing at . (b) Calculated scattering power spectrum for cylindrical gold dots with base of and height of (black) and base of and height of (gray). High aspect ratio gold needles grown with deposition times ranging from : (c) before and (d) after annealing (45° tilt images).
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