Fig. 3
Download original image
Schematic of index-matching system. (a) after 24 hours of drying, paraffin and coverplate glass are put over the PVA/AA sample. (b) The final sample is ready to be placed into the experimental setup presented in Figure 4. (c) Fibonacci lens about 2000 
of radius is recorded into the sample.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.