Story perspectives

Chinese Researchers Unveil Game-Changing Eco-Friendly Piezoelectric Films

3/19/2026

Summary

Story summary

Researchers at the Institute of Metal Research in China developed ultrathin bismuth ferrite (BiFeO3) films with a piezoelectric response over four times greater than conventional forms.
By engineering multilayer heterostructures, they stabilized a metastable S-phase and achieved about 30 pm/V in films sixteen unit cells thick.
The advance enables eco-friendly piezoelectric devices in miniaturized electronics and offers an alternative to lead zirconate titanate (PZT) for sensors and energy harvesting.

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Story summary

Researchers at the Institute of Metal Research in China developed ultrathin bismuth ferrite (BiFeO3) films with a piezoelectric response over four times greater than conventional forms.
By engineering multilayer heterostructures, they stabilized a metastable S-phase and achieved about 30 pm/V in films sixteen unit cells thick.
The advance enables eco-friendly piezoelectric devices in miniaturized electronics and offers an alternative to lead zirconate titanate (PZT) for sensors and energy harvesting.