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Full and Complete PDFs of research papers:-
P. Giannozzi
Scuola Normale Superiore di Pisa and DEMOCRITOS-INFM Seminario all’Universita` di Udine, 2005/11/28
Download -- Intimate relationship between structural deformation and properties of single-walled carbon nanotubes and its hydrogenated derivatives
Abstract: Carbon nanotubes continue to surprise scientists with their novel properties. Recently we have discovered many intimate relationships between structural deformation and the properties of single-walled nanotubes (SWNT) that could be important in technological applications. From the first-principles we show that by using pressure, carbon nanotubes can be covalently joined to form one and two-dimensional networks of interlinked nanotubes. We also found that the band gap of an insulating nanotube can be engineered by elliptical distortion, which is found to be in the elastic range. This could allow the fine-tuning of the properties of SWNTs via reversible deformation and ultimately lead to variable quantum devices. Finally, we have shown that the chemical reactivity of nanotubes can be tuned by elliptical deformation, which may provide a way to attach various atoms such as H and metals to a specific location on a nanotube. In particular, we have studied hydrogenated carbon nanotubes for a large number of configurations and hydrogen coverage. We show that the electronic and atomic structure of carbon nanotubes undergo dramatic changes with hydrogen chemisorption. The first principle calculations indicate that selective bonding of hydrogen to nanotubes can give rise to a number of potentially useful applications in the emerging field of molecular electronicsDownload-- Electronic Structure of Doped Fullerenes and Single Wall Carbon Nanotubes
Abstract. Soft x-ray absorption and emission spectroscopy is being used to study and compare the electronic structure of (a) potassium doped single wall carbon nanotubes (interstitial dopant) etc etc.
Download -- Measurement of
Electronic Properties of
Carbon Nanotubes with
Intermittent-Contact AFM
