Scientists Create Laser Tues

With the example of the office copier, the scientists then created a printer or printing machine that can produce coffee-sized image Nanoscale biological cells or very small.

University of Illinois scientist who developed this cell copier mentioned, the prints of biological cells can be very helpful in making artificial tissues.

"By modifying the technique, it would be possible to manipulate biological cells or cell biomolecules such as DNA," said study team leader John Rogers, as quoted by New Scientist, Tuesday (2/2/2010).
Electrohydrodynamic jet printer made in their work with different electrical voltage between the metallic nozzle and subtrat below. Results of electric voltage causes ions in the charge of ink in the nozzle assembly and the surface is formed like a crescent moon.

Because the ion charges repel, the surface of the crescent moon will then be transformed into a cone shape, produces super-thin tip of a small drop of ink in which the smallest was issued.

This process produces an imbalance in the quantity of negative and positive ions in the printing ink. However, team members realized that by changing the voltage polarity, they can solve these problems and can also print a variety of complex patterns of negative or positive charge into the substrate. In essence, this ability is needed to make copies of biological cells are complex and very small.