Nanofibres are simply fibres 5000 times thinner than a human hair.
They can be spun from organic proteins (Revolution Fibres use collagen derived from waste fish skins) and the gossamer fabrics they make are the subject of intense global research. Thousands of scientists around the world are coming up with ways to use them: human tissue engineering, textiles with special properties, protective materials, batteries and solar cells, acoustics, composite reinforcement for super-light construction, filters and absorbent materials. Electrospinning around the world is very much on the lab scale, using needles and producing a fraction of a gram per hour. No good for commercial production.
Revolution Fibres have invented a needle-less system.