Release date: 2010-05-24
An international research team recently reported that nanotechnology has been used to make the world's smallest liquid pump, which is only as large as a red blood cell in human blood, and can be used to control the delivery of drugs to a single cell with extremely small amounts of liquid.
The new issue of the British journal Nature Nanotechnology reported that the nano pump was made by researchers in Korea and the United States. They used a laser to etch a tiny tube on the glass, but left a very thin glass wall at the other end of the tube, and then poured an electrically conductive liquid into the unpenetrated glass tube, making it A "wire" on a nanometer scale. Under the condition of applying a strong electric field, the thin wall of the glass tube that does not penetrate one end becomes electrically conductive, so it can be used as an electrode.
By assembling these tiny "electronic devices," the researchers created a nanopump that has only one red cell size, which can control the flow of liquid to one-hundredth of a liter per second.
Researchers say the nanopump can be used to extract traces of liquid samples from infected cells or to deliver drugs to individual cells. In addition, since many of the devices for microfluidic control currently use glass materials, the technique of laser etching glass tubes in this study can also be used to improve existing related devices.
(Source: Xinhuanet)
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