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Showing 1–8 of 8 results
Advanced filters: Author: Daesu Lee Clear advanced filters

  • The brine network in common sea ice boosts its flexoelectric response by three orders of magnitude, matching high-quality piezoelectrics and pointing to cost-effective energy harvesters for cold environments.

    • Daesu Lee
    News & Views
    Nature Materials
    Volume: 24, P: 1511-1512

  • Local shear stress from an atomic force microscope tip can control the crystal directions in thin oxide films. This approach enables the manipulation of local magnetic anisotropy in ferromagnetic metals.

    • Wei Peng
    • Wenjie Meng
    • Marin Alexe
    ResearchOpen Access
    Nature Nanotechnology
    Volume: 20, P: 1199-1204

  • Electric polarization is well defined for insulators but not for metals. Electric-like polarization is now realized via inhomogeneous lattice strain in metallic SrRuO3, generating a pseudo-electric field. This field affects the material’s electronic bands.

    • Wei Peng
    • Se Young Park
    • Daesu Lee
    ResearchOpen Access
    Nature Physics
    Volume: 20, P: 450-455

  • Previous studies are limited to modulate oxygen octahedral rotation angles within the same pattern, and engineering the pattern remains a challenge. Here, the authors demonstrate a designed nonequilibrium oxygen octahedral rotation pattern leads to room-temperature ferroelectricity in CaTiO3.

    • Jeong Rae Kim
    • Jinhyuk Jang
    • Daesu Lee
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-9

  • Manipulating the electric state of large band gap dielectrics without any damage is quite challenging. Here, the authors demonstrate by mechanically introducing strain gradients that large electric fields are generated via flexoelectric interactions, resulting in a reversible Zener breakdown in SrTiO3, changing the resistivity by 108.

    • Sung Min Park
    • Bo Wang
    • Daesu Lee
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8