Over the last few years, several technologies have been adapted for use in tactile displays, such as thermo-pneumatic
actuators, piezoelectric polymers and dielectric elastomers. None of these approaches offers high-performance for
refreshable Braille display system (RBDS), due to considerations of weight, power efficiency and response speed.
Optical actuation offers an attractive alternative to solve limitations of current-art technologies, allowing
electromechanical decoupling, elimination of actuation circuits and remote controllability. Creating these opticallydriven
devices requires liquid crystal - carbon nanotube (LC-CNT) composites that show a reversible shape change in
response to an applied light. This work thus reports on novel opto-actuated Braille dots based on LC-CNT composite and
silicon mold microstamping. The manufacturing approach succeeds on producing blisters according to the Braille
standard for the visually impaired, by taking shear-aligned LC-CNT films and silicon stamps. For this application, we
need to define specifically-shaped structures. Some technologies have succeeded on elastomer microstructuring.
Nevertheless, they are not applicable for LC-CNT molding because they do not consider the stretching of the polymer
which is required for LC-CNT fabrication. Our process demonstrates that composites micro-molding and their 3-D
structuring is feasible by silicon-based stamping. Its work principle involves the mechanical stretching, allowing the LC