  Optical chirality is central to many industrial photonic technologies
including enantiomer identification, ellipsometry-based tomography and spin
multiplexing in optical communication. However, a substantial chiral response
requires a typical three-dimensional (3D) constituent, thereby making the
paradigm highly complex. Photonic devices integrated with
microelectromechanical systems (MEMS) have shown potential for chiral light
control by external stimuli, but the stimuli usually demand a destructive
dosage. Here, we report a simple synthetic chiral paradigm that is electrically
programmable with self-assembled 3D MEMS cantilevers. This paradigm enables
four reconfigurable chiral schemes with dextrorotary, levorotary, racemic and
achiral conformations. Optical response of reversible chirality and chiral to
achiral switch are electrically encoded following an exclusive OR logical
operation with dual-channel bias as low as 10 V. Our device demonstrates a
route to electrically actuated synthetic chiral platform and serves as a
powerful conformation analysis tool for macromolecules in biology, medicine,
chemistry and physics. The prototype delivers a new strategy towards
reconfigurable stereoselective photonic applications.
