Thermal activated microfluidic switching
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United States of America Patent
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Mar 30, 2021
Grant Date -
Nov 19, 2015
app pub date -
May 18, 2015
filing date -
May 16, 2014
priority date (Note) -
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Abstract
A microfluidic chip assembly having a plurality of microfluidic flow channels is provided. Each channel has a switching region. The microfluidic chip may further include at least one bubble jet actuator configured to generate a pressure pulse in the switching regions of the channels to selectively deflect particles in the flow. The bubble jet actuator may be configured as a blind chamber, as an operative non-through flow chamber and/or as a self-replenishment chamber. The bubble jet actuator may include a trapped air bubble. The bubble jet actuator may include a plurality of heating elements individually controlled for pre-nucleation warmup and/or for triggering vapor bubble nucleation.
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