Quirina Ferreira

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In this article, we present a denoising algorithm to improve the interpretation and quality of scanning tunneling microscopy (STM) images. Given the high level of self-similarity of STM images, we propose a denoising algorithm by reformulating the true estimation problem as a sparse regression, often termed sparse coding. We introduce modifications to the(More)
—Biocellulose and biocellulose composites are being investigated as substrates and as gate dielectrics for organic field effect transistors. Spin coated films of regioregular poly(3-hexylthiophene) (RR-P3HT) and thermally evaporated pentacene were used as semiconducting materials. Preliminary results on device characteristics are reported.
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