At one-billionth of a meter, a nanometer is miniscule—much too small for the human eye to see. And for most humans, anything measuring 100 nm or less may be impossible to comprehend as significant. For this reason, it would seem illogical that structures measuring 1–100 nm would not only exist but would also have implications and applications that could be essential to humankind.
Nonetheless, scientists have embarked on a field of science that could literally fit on a person’s fingernail: nanotec…