And the winner of our SEM Competition 2013 is...
The World's Smallest Coin
Made from diamond to celebrate the Diamond Jubilee of Queen Elizabeth II.
By Andrew Greer, Glasgow University
How it was created
An epitaxial diamond layer above Si was nanopatterned and etched to produce a diamond coin upon a Si back plate to commemorate the Queen’s Diamond Jubilee.
HSQ was exposed using an e-beam to define the details of the coin’s face. Secondly PMMA was spin coated above the HSQ and exposed with an e-beam to define the perimeter of the coin. Al was evaporated to act as the diamond etch mask and etching was performed with an Oxford Instruments System 100 RIE tool. The Al was then removed and the HSQ details transferred to the diamond using the same etch tool.
Congratulations to Andrew and thank you to all who entered, please browse through the top entries below.