Nanotechnology is not a single technology, but a set of technologies which yield a set of technical breakthroughs that seep into many different markets. Nanotechnology has been applied to photovoltaics, MEMS and NEMS, molecular electronics, data storage, catalysis and biotechnology. Nanotechnology is made possible by a variety of nanofabrication techniques. Some of the techniques include: electrospinning, sol-gel processing, molecular self-assembly, atomic layer deposition and physical vapor deposition. Nanotechnology touches all aspects of high-technology.