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. Author manuscript; available in PMC: 2013 Dec 3.
Published in final edited form as: Recent Pat Nanomed. 2013 May 1;3(1):9–20. doi: 10.2174/1877912311303010003

Fig. (11).

Fig. (11)

(left): Processing sequence for self-opening and self-closing boxes. (A) A layer of chromium (blue) is evaporated onto a silicon wafer and patterned. (B) A gold film (yellow) is evaporated onto the surface. (C) A passive, rigid polymer, BCB, is deposited on the surface by spin-coating and is patterned; (D) PPy (green) is grown electrochemically onto the gold electrodes. (E) The PPy and gold are patterned. Fig. 16 (right): A sequence of photographs shows a cubic box as it closes (A to D). Each of the six sides of the boxes is 300 um by 300 um. The two enclosed particles are small grains of sand. Folding from (A) to (D) took about 1s (adopted from ref. [34]).