Obscure mathematical ideas developed back in the 1980s could solve current problems of mixing fluids at the microscale, and revolutionise the technology, reports an article in Science.
The need to mix fluids at the microscale affects a whole range of developing technologies – from inkjet printers to DNA analysis – and finding ways to do it is becoming big business. Millions of dollars have already been poured into ‘lab-on-a-chip’ projects, but making miniature labs is not just a question of scaling things down.
When you pour cream into your coffee via the back of a spoon, it forms a delicious layer on the top, through which you sip your coffee. Should you want to mix the layers together, however, you simply pick up the spoon and stir, creating turbulence in the fluids that causes them to mix.
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