About nanotechnology

When we hear the word motor automatically we thing in something big with a lot of metal/irons an oil that uses gas or another source of direct energy (i wont consider light because the solar panels just keep the sun light in form of electrical energy inside of a"battery"), but nowadays with the constant progress and development the concept of a motor have been changing. Today we can have a motor smaller than a little cells group. 

                        

                           In the Cambridge university some experts have developed a nanometer motor, meanwhile they just have the prototipe, this prototipe work by the light, it has a polymer in form of gel that can keep and release water, and inside of the polymer has charged gold particles. When the light impact the motor, this in a few seconds fraction stores a lot of elastic energy, an at the same time the polymer start to release water an this make the gold particles get closer and "collide", and then start the get expanded again and the polymer absorbs water again. This is the basic basic work of the motor (how the movement inside him his produced, is a kind of piston what im talking about) 

                           Anyways this object can be the future source of energy of the nanomachines, and allow them working inside our body for too much time or include all our life,i like this object because in my opinion the motor changes the world, they made a difference in the human story. It could be used to transport dugs inside the body to specific places. In the future probably could create problems like over population giving us a long life by nanotechnology, but now it has a prosperous future as a engine piece, i learn about this the tuesday class but now i have a complete opinion (i had to think about this 3 days).