Current–voltage characteristics of polypyrrole nanotube in both vertical and lateral electrodes configuration

Thermal Analysis and Dc Conductivity of Polypyrrole / Yttrium Oxide Composites

“…A 0.02 mole of pyrrole was added drop wise to 100 ml suspension containing 0.06 mole of FeCl 3 Differential scanning calorimetric studies on PPy/Yttrium oxide composites were carried out using a METTLER thermal analyzer. DSC was recorded from 50 0 C to 600 0 C. The heating rate was kept constant at 10 0 C per minute.…”

A Review on Electronic Transport Properties of Individual Conducting Polymer Nanotubes and Nanowires

“…The current-voltage (I-V) characteristics of individual polymer nanowires/tubes such as the polyacetylene, polyaniline, polypyrrole, and PEDOT have been explored extensively in the past ten years Park et al, 2003;Kaiser et al, 2002Kaiser et al, , 2003Kaiser et al, & 2004Long et al, 2005b). With lowering temperature, a transition from linear to nonlinear I-V characteristics is usually observed (Fig.…”

“…In fact, all these approaches did not realized the conductivity measurement of an individual fiber directly. Recently, the conductivity measurement of single polyaniline or polypyrrole tube/wire was achieved based on a conductive tip of an atom-force microscope Park et al, 2003;Saha et al, 2004;Liu et al, 2006). In this two-probe geometry, the contact resistance can be minimized by applying a significant pressure of the tip onto the nanotube/wire.…”

“…In this two-probe geometry, the contact resistance can be minimized by applying a significant pressure of the tip onto the nanotube/wire. A common approach was generally realized by dispersing nanotubes/wires on patterned micro-or nanoelectrodes prepared by photo-lithography, electron-beam lithography and focused-ion beam deposition, followed by the subsequent searching of nanofibers just lying on the two or four electrodes only (Kim et al, 1999;MacDiarmid et al, 2001;Park et al, 2003;Lee et al, 2004;Aleshin et al, 2004;Samitsu et al, 2005;Joo et al, 2005;Aleshin, 2006;Gence et al, 2007Gence et al, & 2008Callegari et al, 2009). Particularly, focused-ion beam assisted deposition technique has been employed to attach metal microleads on isolated www.intechopen.com A Review on Electronic Transport Properties of Individual Conducting Polymer Nanotubes and Nanowires 225 nanotubes/wires directly (Long et al, 2003a(Long et al, , 2004b(Long et al, & 2005bHuang et al, 2006;Long et al, 2006c;Duvail et al, 2007;Lu et al, 2007;Long et al, 2008aLong et al, & 2009b.…”

Application of scanning probe microscopy to the characterization and fabrication of hybrid nanomaterials

“…DC c-AFM refers to contact mode electrical measurements taken with a time-independent bias. DC c-AFM has been applied to a wide range of materials including platinum nanowires (Macpherson et al, 2001), polypyrrole nanotubes (Park et al, , 2003, carbon nanotubes , quantum dots (Yamauchi et al, 1999), quantum point contacts (Topinka et al, 2000), compound semiconductors (Sato et al, 2001), and diamond films (L. Zhang et al, 2002). The remainder of our discussion focuses on hybrid inorganic and organic nanomaterials including organic semiconductors, immobilized biological systems, self-assembled monolayers, and organic-inorganic nanocomposites.…”