hard_disk Polyaniline pinpoint mode TiO2 PS_LDPE Nanopattern exfoliate UnivCollegeLondon Singapore ScanningKelvinProbeMicroscopy Granada OpticalWaveguide IIT-chennai LDPE Dr.JurekSadowski Bmp HexagonalBN Defects Blood Imprint Stiffness IISCBangalore BismuthVanadate Chrome LateralForce Monisha Carbon Cross-section temperature controller AFM MoirePattern Mapping LithiumNiobate CrossSection Adhesive Biology