Science Documentary:Perfect lenses,smart textiles,biomedical sensors a documentary on nanotechnology

Science Documentary:Perfect lenses,smart textiles,biomedical sensors a documentary on nanotechnology Each day we are able to see visible light defraction through various objects. For example, when we see rainbows or sunlight shining through a swimming pool the light bends in a different direction. Yet, there are objects too small for us to see with the naked eye; that are able to defract different forms of light. Butterflies wings are made up of tiny structures, which on the nanoscale are able to defract microwaves. Microwaves are another form of light on the electromagnetic spectrum that humans are unable to see. But on the nanoscale, tiny structures like the ones that make up butterflies wings can defract this form of light. When these nanostructures are metalized, they have very interesting properties of interference and defraction. They will scatter microwaves in opposite directions and will be very useful in the field of RFID tagging. RFID or Radio Frequency Identification tagging is the process of using radio waves for tracking purposes, record keeping and stock checking etc. The current use of RFID tagging yields only a 70% success rate , whereas with the use of nanotechnology and metamaterials in creating structure metal surfaces in RFID tagging, we can achieve a success rate of 99.9%. When you look through a prism, light bends a certain way, but the theory of the perfect lens proposes that you can get light to bend the other way if you so wanted, this is referred to as a negative refractive index. All objects in nature, like water, have a positive refractive index, and bends the light at an angle. But if an object were to have a negative refractive index, then the light would bend in the opposite direction. The uses for the perfect lens would be to be able to view objects that you normally would not be able to see, objects on the nanoscale. With this technology, we may be able to easily view nanoparticles within a cell. Nanotechnology is