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This research demonstrates a breakthrough in controlling phonon chirality within ferroelectric crystals using an electric field, enabling state retention without continuous power input. By manipulating the rotational direction of atomic vibrations, this work lays foundational groundwork for "phonorics," a potential future technology that processes information via sound waves rather than electrons. While not yet a commercial product, achieving reversible switching with memory represents a significant step toward novel quantum acoustic devices and advanced thermoelectric applications.
Electric Field Reversibly Switches Phonon Chirality in Crystal

Illustration: pronedra.ru. Scientists at the Paul Scherrer Institute (PSI, Switzerland) have demonstrated that an electric field can reversibly switch the chirality of phonons in a crystalline material and maintain the selected state without continuous…
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