temperature controller AFM UnivCollegeLondon ScratchMode 2d_materials Al2O3 SSRM light_emitting HardDisk Anneal Ceramic Treatment BariumTitanate HexagonalBN Mechanical&nanotechnology SmallScan NtuEee Ferroelectric small_scan Polyethylene Semiconductor Polyvinylidene_fluoride Deposition DLaTGS Thermal Sphere STM cross section LiBattery HafniumDioxide BTO epitaxy molecule IMT_Bucharest Singapore Magnetic Force Microscopy