Must beleive -- Injectable Electronics

Miniature LED circuit

 If you think electronic implantation inside the human body is the most advanced medical technique then you are utterly wrong..Soon this concept of implanting electronic circuits inside the body is going to become obsolete. Now we are moving towards the age of Injectable electronics..
What is Injectable electronics?
Making electronic implants for the body is hard to do: Tissue is delicate and stiff components can irritate it. Then there’s getting those implants into the
                                                                                                relevant organ without invasive surgery.
To help solve these problems, John A. Rogers, a materials science professor at the University of Illinois, and Michael Bruchas, an anesthesiologist at Washington University in St. Louis, built an electronic LED device so tiny that it can be injected into delicate tissue, such as in the brain, without harming it.
   Rogers told the press that brain tissue is not only fragile, it also tends to move around because brains are suspended in fluid, and that creates problems when one tries to put relatively stiff, rigid electronics or fiber optics in place. 
How is it possible to inject electronics?
In order to achieve this researchers put together an extremely small circuit board with light-emitting diodes on it. The whole device is only about 25 microns thick. For comparison, a human hair is about 100 microns and fiber-optic cable strands are about 125. The thinness is part of what makes it so flexible. The substrate – the “board” that the electronics sit on, is made of polymer, while silk helps it bond with the tissue. Silk is compatible with tissue and is even used in dissolving stitches.They then injected the device into the brain of a mouse that was genetically engineered to have brain cells that responded to flashes of light from the LEDs. That way Rogers and his collaborators could tell which cells were being stimulated and confirm that the device worked. That kind of smallness would come in handy when studying individual neurons.

Advantages
One of the big advantages to injecting a device like this into the brain, Rogers said, is that it doesn’t require a wire connected to a computer protruding from the skull. With mice and rats, such apparatus tends to restrict their movement and alter their behavior. This new kind of electronics allows scientists to monitor specific parts of the brain during basic research. Being so small, the LEDs did not irritate the surrounding tissue as much as traditional electrodes. Electrodes are used inside the brain for a variety of disorders, such as Parkinson’s. But there’s often swelling of the brain tissue after they are taken out. Very tiny electronic components avoid those problems.

          With this injectable electronics it is possible to inject complex circuitry that is necessary for proper functioning of organs without major surgeries which includes a lot of risk...