Abstract
Micro-optical elements with micro- and nanoscale surface features prepared from an optically transparent shape-memory elastomer via replica molding at high precision are reported by Tao Xie, John A. Rogers, and co-workers on page 3299. Through shape-memory programming, the surface features and corresponding optical functions can be manipulated both globally and locally in a controlled manner. The image illustrates that a flattened microlens array loses the capability to focus light and only those completely recovered microlenses (coupled with a circular indium tin oxide heater) are able to project the letter “A” after thermal activating.
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