Molecular Nanowires Based Arrays for Interaction of the Biomediums With Electronics

the URL related to the poster: www.ecmjournal.org/journal/supplements/vol014supp03/pdf/v014supp03a037.pdf

Rostyslav SKLYARVerchratskogo st. 15-1, Lviv 79010 Ukraine

Phone +38 097 3365495, fax +38 032 2762432, e-mail sklyar@tsp.lviv.ua

Self-assembled molecular nanowires were found to be composed of a single crystal, allowing good electrical transport with low resistivity. Finally, field-effect transistors (FETs) with single- and doublewire channels were fabricated to give some indication of the potential application of the molecular wires. Substantial progress has been made in dening the performance limits and exploring applications based on NWFETs and other nanowire-enabled devices prepared using the bottomup paradigm. The single- and double-wire transistors were fabricated, successfully using needle probes to apply gate voltage. With the latter, a double top-gate configuration enabled independent control of the drain current through each wire and enabled modulation to four different values by turning gate voltage on and off. Resistivity measurements of an individual molecular wire indicate that these structural features are advantageous for electrical transport.

Integrated CMOS image sensor device for in vivo neural imaging has been developed. Improvement in the packaging process has resulted in a compact single-chip device for minimally invasive imaging inside the mouse brain. The number of single molecule devices available to the designer/researcher to use in devising chemical sensors has grown to encompass all of the critical components necessary to generate multicomponent optical, electronic, and optoelectronic circuits. Alternatively, a FET based neurotransducer with carbon nanotubes (CNT) or pickup coil (PC) kind of input circuit for the nerve and neuron impulse has been designed. A CNTFET with a high-temperature superconducting channel is introduced into the nerve fibre or brain tissue for transducing their signals in both directions.

A further step should be the synthesis of the said two methods in order to develop the internal (implantable) nano-bio-sensing/actuating arrays. This means wrapping of molecular nanowired PC around the axons of a nerve fibre or synapses of neurons in order to obtain the natural biosignals from the nervous system and brain. This leads to sensing access across a vast range of spatial and temporal scales, including the ability to read neural signals from a select subset of single neural cells in-vivo. Moreover, this process can be executed in reverse for introducing the artificial control signals with the local neural code into the single cell electrical activity. For these applications, and for prototype development and characterization of performance, surface localization is an important next step in the development of integrated systems.

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