Semiconductor Pores Solar H-BN self-assembly ScratchMode Logo Step Composite Lateral_Force_Microscopy oxide_layer Friction TCS GalliumPhosphide Edwin Bismuth NUS_Physics PS_LDPE Pattern CBD Display Silicon LDPE ContactMode FM-KPFM electrospinning Conductivity CopperFoil Mechanical self_assembly TyphimuriumBiofilm suspended_graphene Hole PolyvinylAcetate SAM