  The small world of matter is getting smaller and smaller. Nano sciences in
recent years had huge developments allowing nanotechnologies to take enormous
steps in the development of materials and processes. Numerous applications in a
wide scope of fields are very beneficial for humans, and many researches in
development are very promising. Applications in medicine, industry,
electronics, energy, or aeronautics are only some examples of areas where
enormous benefits exist, and potentialities are clear. Some nanotechnologies
are already applied and others are in development or testing phases.
