Invisible materials are in the way of inventions.

Researchers in University of Cambridge are developing a new method using light to build a material which is realm of science fiction films.They are trying to develop a invisible material which can lead to the discovery of cloaking devices and cloaking cloths as well.Yes the same cloth that Harry Potter once wear in the fiction movie can now be seen in the real world.The technique is using light like a thread particle to produce long chains of molecules which can possibly bring the concept of sci-fi things like cloaking cloths and devices into reality.


So you may be wondering that how these could be possible as the basic properties of light is completely differing the theory.As of now what we know about light is that light when falls on a surface of a materials it is either reflected or absorbed which indeed enable us to see objects.So,this is the basic principle in which light theory is based on.But now by engineering materials kept at nano-scale level it is possible to produce meta-materials which are nothing but materials which has the capability to control the way in which light interacts with them.Light falling on meta materials generally reflects in a wrong way thus rendering the object invisible or making them appearing something else.

The Cambridge team is using the the technique by using unfocused laser light and stitching gold nano particles into thousands of long strings into the water for the first time.These layers then can be stacked into layers on top of the others simi8lar to that of the structure of Lego bricks.the method makes it possible to produce materials in higher quantities as compare to the techniques used currently.In order to make the strings the scientist have used a barrel-shaped molecules called cucurbiturils(CBs).The CBs acts as a miniature spacers which can bind the nano-particles quite tightly and helps to lock them strongly.Now what is challenging the scientist is that how the nano-particles can be connected electrically.Conventional welding techniques can be ineffective as they will melt most of the nano-particles.So the only method remains is building a bridge between the nano-particles.But the concept of these theory into practical application is quite challenging so the researcher is still working on it.



This technology to become reality is still a long road as first Scientists needs to precisely determine how to make the perfect meta-materials in the nano-scale level.But its possible soon enough because using light its quite possible to make this type of nano-constructions.I hope this Technology can indeed one day surprises the whole world and most important of all-change the world in a new way with better physical application

                                                                                                                               Anuttam Chatterjee