Carbon Nanopipettes

We report the growth and detailed structural investigation of a new morphological manifestation of carbon-based nanostructures in the form of tapered whiskers with uniform 1−3 nm hollowness. The base of the whiskers is in the submicron scale, tapering uniformly to form a pointed tip in the form of a...

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Veröffentlicht in:	Nano letters 2003-05, Vol.3 (5), p.671-673
Hauptverfasser:	Mani, Radhika C, Li, Xiang, Sunkara, Mahendra K, Rajan, Krishna
Format:	Artikel
Sprache:	eng
Schlagworte:	Clusters, nanoparticles, and nanocrystalline materials Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Exact sciences and technology Fullerenes and related materials diamonds, graphite Materials science Nanoscale materials and structures: fabrication and characterization Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals Physics Specific materials Structure of solids and liquids crystallography Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) Whiskers and dendrites (growth, structure, and nonelectronic properties)
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Beschreibung
Zusammenfassung:	We report the growth and detailed structural investigation of a new morphological manifestation of carbon-based nanostructures in the form of tapered whiskers with uniform 1−3 nm hollowness. The base of the whiskers is in the submicron scale, tapering uniformly to form a pointed tip in the form of a pipette. These hollow nanopipettes have a shell containing helical graphitic sheets. We propose that these whiskers grow by competing phenomena of growth and etching that control their aspect ratio.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl034125o