Evaluation of the Gauge Factor for membranes assembled by single-walled C nanotubes

Samples of single-walled carbon nanotubes (SWCNTs) organized in the form of thin membranes have been investigated in order to correlate the mechanical deformation and conductivity behavior of such nanosized material. The nanotubes gauge factor of piezoresistivity has been evaluated by comparing the electrical responses induced by the deformation in SWCNT membranes and in Si substrates with the same electrical characteristics. The gauge factor of the SWCNT–Si systems was found to be a factor 2.3–2.5 larger than that of the Si substrates. We have also observed that temperature slightly enhances the piezoresistive response of the SWCN

Valutare la prevenzione nella scuola. Proposte e materiali esemplificativi per la valutazione degli interventi di prevenzione in ambito scolastico

Consiglio Nazionale delle Ricerche - Biblioteca Centrale -. P.le Aldo Moro, 7, Rome / CNR - Consiglio Nazionale delle RichercheSIGLEITItal

Strategies towards the assembling of carbon nanotube systems for particle and electromagnetic beams handling

We present here some methods for the production of organized systems formed by carbon nanotubes and suitable for nano-beams generation and handling. In particular methodologies based on Chemical Vapour Deposition (CVD), chemically induced assembling and alignment by dielectrophoretic processes are examined and their capacity to produce assembling of nanostructured materials with defined architecture is discussed