Tag

Flexoelectricity

All articles tagged with #flexoelectricity

Graphene's Sharp Bend Reveals Quantum Orbital Flexoelectricity
science1 month ago

Graphene's Sharp Bend Reveals Quantum Orbital Flexoelectricity

US/UK researchers report that extremely sharp bends in graphene produce local electrical changes in line with flexoelectric theory, demonstrating that shape alone can create polarization in this ultrathin material and, at the atomic scale, may alter how electron orbitals overlap to yield a phenomenon dubbed quantum orbital flexoelectricity.

Nano-Wrinkles Make Graphene Behave Like a Battery
science1 month ago

Nano-Wrinkles Make Graphene Behave Like a Battery

Researchers have demonstrated that nanoscale wrinkles in graphene induce a powerful flexoelectric effect: bending at the atomic scale creates charge separation, effectively turning graphene into a tiny battery. Using conductive atomic force microscopy and simulations, the team shows these wrinkles produce polarization up to 10 million times larger than in larger flexoelectric systems, suggesting geometry can tune electronic behavior in ultra-thin graphene without added chemicals. The findings, published in Advanced Materials (2026), point to potential uses in ultra-thin sensors and electronics, though further confirmation is needed.

Salty Ice's Electrical Power: Unlocking Nature's Lightning Potential
science1 year ago

Salty Ice's Electrical Power: Unlocking Nature's Lightning Potential

Scientists have discovered that ordinary ice can generate electricity when bent, through a process called flexoelectricity, and also exhibits surface ferroelectricity at very low temperatures. This dual electrical behavior may help explain natural phenomena like lightning formation and could lead to new technological applications using ice as an active material. The findings, published in Nature Physics, reveal surprising electromechanical properties of ice that extend our understanding of its behavior in nature and potential uses in electronics.

"Discovery of Spontaneous Toroidal Polar Topology in Helielectric Nematic State"
science2 years ago

"Discovery of Spontaneous Toroidal Polar Topology in Helielectric Nematic State"

Researchers have discovered a spontaneous toroidal polar topology in the helielectric nematic state, a ferroelectric liquid-matter phase with polarized helices. This topology is generated through a flexoelectric effect, leading to the formation of previously unknown polar topological structures. The findings could pave the way for new polar topologies and the development of switchable ferroelectric-liquid-matter optoelectronic devices.