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Nanomaterials are often functionalized with biological ligands to enable their use as sensors of biological activity. However, the intricacies of nano-bio interactions are poorly understood, which hampers our ability to design nanomaterial-based sensors. Current experimental tools have been unable to visualize interactions occurring on the nano-bio interface with the spatial and temporal resolution...
In this work, we present a novel piezoresistive tactile sensing array which is capable of retaining and erasing tactile images. The sensing element comprises polydimethylsiloxane (PDMS) polymer mixed with multi-wall carbon nanotubes (MWCNTs) and silver nano-particles by using the dielectrophoresis (DEP) technique. When the sensing element is pressed, the resistivity increases and retains. The resistivity...
Multi-wall carbon nanotubes decorated with different metal or metal oxide nanoparticles were used for gas sensing applications in a chemical resistor configuration. In this configuration, multi-wall carbon nanotubes serve as a conductive channel (for electrical signal acquisition), a heating element (for local heating of attached nanoparticles), and a substrate for nanoparticles growth or deposition,...
We, along with others, have developed several chemical vapor deposition (CVD) methods for large-scale production of vertically-aligned single-walled, multiwalled, and super-long carbon nanotube arrays. The resultant aligned carbon nanotube arrays can be transferred onto various substrates of particular interest in either a patterned or non-patterned fashion. The well-aligned structure provides additional...
Novel non-fragile porous conductive nanocomposite vapor sensors with variant volume porosities and specific surface areas have been fabricated from PMMA and carbon nanoparticles. Sensing films were obtained by well known dry-cast non-solvent induced phase separation (NIPS) method. Porous composite structures have been characterized by SEM, BET and water evaporation methods. Response behavior of fabricated...
The following topics were dealt with: nanomaterials such as nanocomposites films, graphene, nanoparticles, quantum wells, carbon nanotubes, and quantum dots; nanotechnology; field-effect transistors; sensors; nanobiotechnology; nanoelectronics; single electron transistor; nanophotonics; optical lithography; memory effects; photonic crystals; nanocomputation; and health and safety.
In this work, we present our study on platinum nanoparticle-coated carbon nanotubes for amperometric glucose biosensing. Transmission electron microscopy and X-ray diffraction were used to characterize the nanomaterial. To investigate its potential biosensing application, platinum and carbon nanomaterial-based electrodes were fabricated and characterized electrochemically. Our experimental results...
We investigated the growth of individual single-walled carbon nanotubes (SWNTs) by low pressure chemical vapor deposition (LPCVD) on Ferritin-based Fe catalyst. According to Ferritin adsorption measurements, we show that the SWNT density on the surface can be controlled by the Ferritin concentration in the adsorption solution. The grown SWNTs were contacted by Cr/Au layers, structured by electron...
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