Japanese researchers have built a miniature pump that's driven by living cells cultured from a rat's heart muscles. Instead of batteries, the pump is powered by a nutrient bath. Someday, this kind of bio-mechanical pump could be integrated into medical implants or labs-on-a-chip. According to the scientists from the University of Tokyo and the Japan Science and Technology Agency, the next step is to integrate chambers and valves to better control the liquid being pumped. From New Scientist:
The main part of the pump is made from a flexible polymer sphere 5 millimetres in diameter. Teflon capillary tubes measuring 400 microns in diameter are inserted into opposite sides of this sphere.
A cell-friendly protein coating is then added to the sphere followed by a sheet of pulsing cultured heart cells. After just an hour the cells are firmly attached and begin driving the pump.
To test the pump, the researchers placed it in a nutrient medium at human body temperature (37°C). They watched through a microscope as small polystyrene balls contained with a fluid moved through the pump's tubes. The pump operated continuously for six days in testing.
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Yes, yes there is. The ultraportable Twisty Glass Mini boasts all of the simplicity of its forebear, while fitting just a little bit better in your pocket.The Mini is perfect for casual smokers, and anyone who doesn’t have the patience or fine motor skill for rolling papers. This piece keeps the convenient design of its older […]
Learning to code is a perfect way to grow your technical sophistication, and open up a host of new career options. But since most “learn to code” initiatives focus heavily on web development, it can be tough to find good resources for general-purpose computer science outside of a 4-year degree program. To get a broad […]
While many newer smartphones boast decent water resistance, most of us are still stuck with the kind of handsets that need to spend the night in a bowl of rice when they get wet. If you want to enjoy your favorite podcasts in the shower but are holding out for your next phone upgrade, this […]