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(a) Schematic drawing of the formation of a nanobelt rolled up from a nanoribbon. The dashed arrow represents the scrolling direction of the ribbon. (b) FESEM image of a freestanding nanobelt with a ribbon width of .
SEM images showing the manipulator probe translating from left to right to unroll the nanobelt . The white arrow in (a) points to another nanobelt with a ribbon width of .
(a) A nanobelt is cut from the substrate by a sticky probe. (Inset) The initial pattern design used to fabricate a nanobelt with a crossbar. (b) A ring is manipulated to the backside of an AFM cantilever with a manipulator probe. (Inset) Magnified image of the nanobelt with crossbar.
Radial stiffness test of an individual nanobelt . (Inset) A series of FESEM images with increasing tensile load on the nanobelt. The scale bar is for all images.
(a) Schematic drawing of a ring undergoing a stretching test. (b) The upper-half ring structure is deformed due to the bending moment induced by the tensile load. The bending moments at point and point of the ring are the same, i.e., .
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