News Column

New Nanowires Findings Has Been Reported by Investigators at National Chiao Tung University

February 12, 2014



By a News Reporter-Staff News Editor at Electronics Newsweekly -- A new study on Nanowires is now available. According to news originating from Hsinchu, Taiwan, by VerticalNews correspondents, research stated, "Metal nanowires (NWs) enable versatile applications in printed electronics and optoelectronics by serving as thin and flexible transparent electrodes. The performance of metal NWs as thin electrodes is highly correlated to the connectivity of NW meshes."

Our news journalists obtained a quote from the research from National Chiao Tung University, "The percolation threshold of metal NW films corresponds to the minimum density of NWs to form the transparent, yet conductive metal NW networks. Here, we determine the percolation threshold of silver NW (AgNW) networks by using morphological analysis and terahertz (THz) reflection spectroscopy. From the divergent behavior of carrier scattering time and the increase of carrier backscattering factor, the critical NW density at which crossover from Drude to non-Drude behavior of THz conductivity occurs can be unambiguously determined for AgNW thin films. Furthermore, the natural oxidation of AgNWs which causes the gradual reduction of the connectivity of the AgNW network is also realized by the THz spectroscopy. The selective oxidation of NW-to-NW junctions weakens the ohmic contact, and for AgNWs near a critical density, it can even lead to metal insulator transition."

According to the news editors, the research concluded: "The presented results offer invaluable information to accelerate the deployment of metal nanowires for next-generation electronics and optoelectronics on flexible substrates."

For more information on this research see: Realization of Metal-Insulator Transition and Oxidation in Silver Nanowire Percolating Networks by Terahertz Reflection Spectroscopy. ACS Applied Materials & Interfaces, 2014;6(1):630-635. ACS Applied Materials & Interfaces can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; ACS Applied Materials & Interfaces - www.pubs.acs.org/journal/aamick)

The news correspondents report that additional information may be obtained from Y.J. Tsai, National Chiao Tung University, Inst Electroopt Engn, Hsinchu 30010, Taiwan. Additional authors for this research include C.Y. Chang, Y.C. Lai, P.C. Yu and H. Ahn.

Keywords for this news article include: Asia, Taiwan, Hsinchu, Nanotechnology, Optoelectronics, Emerging Technologies

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Source: Electronics Newsweekly


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