News Column

Data from Tokyo Institute of Technology Provide New Insights into Materials Science

June 24, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- Data detailed on Materials Science have been presented. According to news reporting originating in Tokyo, Japan, by VerticalNews journalists, research stated, "Suspended plasmonic nanopores in ultrathin film layers were fabricated through a simple and widely applicable method combining colloidal lithography and thin film transfer, which allows mass production of short-range ordered nanopore arrays on a large scale. By this combined method, mechanically stable and flexible free-standing nanopore membranes with a thickness down to 15-30 nm were produced."

The news reporters obtained a quote from the research from the Tokyo Institute of Technology, "The plasmon resonances of the ultrathin plasmonic nanopores fabricated in AlN/Au/AlN trilayer and single layer Au membranes were tuned to lie in the vis-NIR wavelength range by properly designing their dimensions. The optical responses to the refractive index changes were tested and applied to adlayer sensing. The trilayer nanopore membrane showed a unique property to support water only on one side of the membrane, which was confirmed by the resonance shift and comparison with numerical simulation. Pore size reduction down to 10 nm can be achieved through additional material deposition. The filtering function of such pore-size-reduced conical shaped nanofunnels has also been demonstrated. The presented nanopore fabrication method offers new platforms for ultrathin nanopore sensing or filtering devices with controlled pore-size and optical properties."

According to the news reporters, the research concluded: "The film transfer technique employed in this work would enable the transformation of any substrate-based nanostructures to free-standing membrane based devices without complicated multiple etching processes."

For more information on this research see: Ultrathin Suspended Nanopores with Surface Plasmon Resonance Fabricated by Combined Colloidal Lithography and Film Transfer. ACS Applied Materials & Interfaces, 2014;6(9):6322-6331. ACS Applied Materials & Interfaces can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; ACS Applied Materials & Interfaces -

Our news correspondents report that additional information may be obtained by contacting J. Junesch, Tokyo Inst Technol, Dept. of Met & Ceram Sci, Meguro Ku, Tokyo 1528552, Japan.

Keywords for this news article include: Asia, Tokyo, Japan, Materials Science

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Source: Journal of Technology

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