Directed Assembly of Ultrathin Gold Nanowires over Large Area by Dielectrophoresis

Autor:	T. Phanindra Sai, R. Venkatesh, N. Ravishankar, Arindam Ghosh, Subhajit Kundu, Avradip Pradhan
Rok vydání:	2015
Předmět:	Materials science Fabrication Sensing applications Materials Research Centre Physics Nanowire Nanotechnology Surfaces and Interfaces Dielectrophoresis Condensed Matter Physics Electrical transport Nanoelectronics Electrode Electrochemistry General Materials Science Spectroscopy Voltage
Zdroj:	Langmuir. 31:9246-9252
ISSN:	1520-5827 0743-7463
Popis:	Ultrathin Au nanowires (similar to 2 nm diameter) are interesting from a fundamental point of view to study structure and electronic transport and also hold promise in the field of nanoelectronics, particularly for sensing applications. Device fabrication by direct growth on various substrates has been useful in demonstrating some of the potential applications. However, the realization of practical devices requires device fabrication strategies that are fast, inexpensive, and efficient. Herein, we demonstrate directed assembly of ultrathin Au nanowires over large areas across electrodes using ac dielectrophoresis with a mechanistic understanding of the process. On the basis of the voltage and frequency, the wires either align in between or across the contact pads. We exploit this assembly to produce an array of contacting wires for statistical estimation of electrical transport with important implications for future nanoelectronic/sensor applications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ef8c1f2105fdc49dbcbb5f57802b326 https://doi.org/10.1021/acs.langmuir.5b01986 Zobrazit plný text záznamu