• drop-on-demand inkjet printing of alumina nanoparticles in rectangular microchannels

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1084
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a procedure has been developed for applying a piezoelectric drop-on-demand inkjet printing technology to deposit metal oxide nanoparticles such as alumina in stainless steel microchannels. the printability of inks having different solid concentrations, co-solvents, hydro-soluble polymers, viscosities, and surface tensions was tested. the effect of piezoelectric activation parameters on properties of generated microdrops such as drop size and velocity was investigated. depending upon the ink composition, three different types of coated film shapes were observed in rectangular microchannels. a uniform coating in rectangular microchannels was achieved by correctly tuning the directional stability of microdrop, ink composition, and microdrop properties. it is observed that drying effects such as coffee ring effect have a large impact on the final shape of the deposited alumina layers. the adhesion of printed alumina layers was tested after drying and calcination in harsh environments such as ultrasonic baths, and it was satisfactory.

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