This panoramic picture has been performed after nanoindentation testing on an Al2O3 ultra-thin film deposited by ALD technique on a silicon substrate.
(Thank you to Marc Fivel for the panoramic acquisition)
About the author: Fatma TRABELSI is a 3rd year PhD student in TOP group studying doped-Al2O3 and TiO2 based-nanostructures for photovoltaic applications obtained by low temperature sol-gel/ALD process