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A pneumatic drop-on-demand (DOD) system has been developed to print micro metal droplet for micro-electromechanical systems (MEMS) devices packaging. Solder droplets with mean size of 321.19 μm and standard deviation of 2.897 μm are obtained using the established system. The deposition results show that the volume of droplet can be accurately controlled. Droplet printing experiments at different temperatures...
Summary form only given. A SAW-based micro-reactor for biochemical assay using droplets encapsulated inside oil droplets is reported. Two interdigital transducers (IDTs) with 35 finger pairs, apertures of 4.32 mm, and a center frequency of 27.7 MHz were fabricated on a 127.86?? rotated Y-cut X-propagating LiNbO3 substrate. Biochemical reagent droplets encapsulated in oil droplets, which the reagent...
A micro-mixer for mixing digital droplets fabricated on 128degY cut X LiNbO3 is reported, which is composed of one interdigital transducers and one reflector for generating unidirectional acoustic field. After a RF signal amplified by a power amplifier was added on an interdigital transducer, surface acoustic wave was excided by the interdigital transducer, and was conversed into longitudinal acoustic...
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