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Individually Dispersed Nanoparticles formed by Gas Evaporation Method and their Applications

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Individually dispersed Au, Ag, Cu and ITO nanoparticle ink are formed by using the industrial scale modified gas evaporation method where formed particles are covered with an organic surfactant just after their formation. The average diameters of these particles are less than 10 nm. These nanoparticle inks are called Nanometalink and suitable for ink-jet printing. Ink-jet printing using Nanometalinks are expected to substitute a patterning process using sputtering and photolithography. The inner structures of the cured films are much dependent on curing conditions such as a curing temperature, a temperature profile and a curing atmosphere which affect the resistivities and the mechanical strengths of the films. An Ag Nanometalink film low temperature curing type which is heat treated at 150°C and 180°C, 200°C for 60min with a thickness of 1 μm has a resistivity of 15μΩ·cm, 4 μΩ·cm, and 3μΩ·cm respectively. The adhesion strengths are improved by adding Cu nanoparticles to Ag Nanometalink in the case of high temperature (over 350 C) curing process and by coating resins on a substrate in the case of low temperature curing process.

The ITO film which is heat treated at 230°C for 60 min with a thickness of 240 nm has a specific electric resistance of 0.0055Ω·cm and transparency of 95% at 550nm. Other inks properties and application examples are also going to be presented.
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Document Type: Research Article

Publication date: 2008-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

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