Copper HexagonalBoronNitride GaN lithography OpticalWaveguides MBE India block_copolymer gallium_nitride CeNSE_IISc PFM Force-distance IRDetector NCM\ OpticalWaveguide epitaxy IVSpectroscopy self-assembly Adhesive HDD doped exfoliate Lateral AtomicLayer TyphimuriumBiofilm PVA Bacteria Hexatriacontane Ram GlassTemperature semifluorinated alkane pinpoint mode Conductance Wafer LowDensityPolyethylene