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Mass production techniques to provide highly sensitive and low-cost antennas are demanded to achieve the Internet of Things. Printing is a suitable technique for mass production of low-cost antennas. In this study, three types of printed silver nanowire (AgNW) antennas were fabricated by preparing inks containing AgNWs of different width and length. Printed antennas of short, narrow AgNWs achieved...
Micrometer-sized Ag particles adsorb substantial oxygen above 200 . A dispersion of these particles in alcohol can be successfully used as a die-attach material by sintering the Ag particles to form a soft porous bonding layer. Since the low-temperature sintering of micrometer-sized Ag particles is unlikely to involve the nanometer size effect associated with melting, it was considered...
We studied the high-frequency characteristics at 0.5–1.5 GHz of mask-printed silver paste lines with different filler sizes (nanoparticles or micro-sized flakes) and an etched copper foil on glass fiber reinforced epoxy substrate. Although the resistivity of silver-nanoparticle lines was 10 times larger than that of the etched copper foil, its return loss was almost equal to that of the etched copper...
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