Prof. Younan Xia*
It looks like we are entering the nano era. If you recently purchased a new laptop, it likely contains processors manufactured using 22 nm technology, which means that half the distance between identical features in an array measures only 22 nm. It probably carries a heat-assisted magnetic recording (HAMR) hard disk drive by Seagate, with a storage capacity of one terabit (TB) per square inch, which implies that each bit of information only occupies an area of 12.7×12.7 nm2. If you recently relaxed on a beach, you have possibly put on some sunscreens based on nanoparticles made of titanium dioxide or zinc oxide. It has been found that these tiny particles can block out harmful rays without the “clown-face” white color of many sunscreens. If you hate the unpleasant odors coming from your socks, you might have tried out the so-called “nanosilver socks”, which contain silver nanoparticles that are able to kill bacteria and eradicate the unwanted odors. The same is true for some sports clothing. Slowly but surely, manmade nanomaterials are finding their ways into our everyday lives.
Fonte: Wiley Online Library