Lattice EvatecAG HexagonalBN ShenYang Hair Oxide Nanotechnology hard_disk Tin disulfide ForceVolumeMapping Singapore Granada Switching Ferroelectric LFM Vortex dichalcogenide Mapping UnivOfMaryland flakes Genetic Piezo Step Crystal HighResolution Hexatriacontane Transparent Annealed kelvin probe force microscopy lift_mode temperature_control ito_film Pvdf VerticalPFM SThM