Figure 2
SEM images of nanofibres extracted from a number of representative
natural materials via ultrasound in water. (a) Spider silk nanofibres. (b) Silkworm silk nanofibres. (c) Collagen nanofibres. (d) Chitin nanofibres. (e)
Cotton nanofibres. (f) Bamboo nanofibres. (g) Wood nanofibres. (h) Ramee nanofibres. (i) Hemp nanofibres.
Images courtesy: Appl. Phys. Lett.