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(a, b) TEM images of matchsticks with a head containing an Ag core. (c) Size distributions of the silver seed particles and the rods grown from them. The rod and Ag mean values are 650 nm (δ = 10%) and 700 nm (δ = 23%), respectively. (d) Relation between the diameter of the silver particle and that of the rod grown from the same particle. The fit line has gradient 0.26 and intercept 0.47 μm.
