Copying Machine for Printing Nano-Scale Cell

With the example of a copying machine in the office, the scientists then created a printer or printing machine that could produce a copy of the image size of biological cells Nano-scale. Scientists from the University of Illinois developed a copying machine that prints the cells in 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.

Electro Hydrodynamic 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 required to make copies of the complex biological cells and very small.