(a) DF optical imageof aligned SWNTs in a SWNT-BBF. Scale bar: 10 mm, and 2 mm (inset).
(b) DF optical image taken from a MWNT-BBF showing aligned MWNTs. Scale bar: 20 mm. Inset, DF optical image showing curled MWNTs in solution before bubble expansion. Scale bar: 20 mm.
(c) Confocal microscopy image of fluorescent CdS NWs embedded in
a BBF. Scale bar: 50 mm, and 10 mm (inset).