title: Very long single- and few-walled boron nitride nanotubes via the pressurized vapor/condenser method.
abstract: A new method for producing long, small-diameter, single- and few-walled, boron nitride nanotubes (BNNTs) in macroscopic quantities is reported. The pressurized vapor/condenser (PVC) method produces, without catalysts, highly crystalline, very long, small-diameter, BNNTs. Palm-sized, cotton-like masses of BNNT raw material were grown by this technique and spun directly into centimeters-long yarn. Nanotube lengths were observed to be 100 times that of those grown by the most closely related method. Self-assembly and growth models for these long BNNTs are discussed.
authors.affiliation: NASA Langley Research Center, Hampton, VA 23681, USA.
authors.forename: Michael W
authors.initials: MW
authors.lastname: Smith
authors.forename: Kevin C
authors.initials: KC
authors.lastname: Jordan
authors.forename: Cheol
authors.initials: C
authors.lastname: Park
authors.forename: Jae-Woo
authors.initials: JW
authors.lastname: Kim
authors.forename: Peter T
authors.initials: PT
authors.lastname: Lillehei
authors.forename: Roy
authors.initials: R
authors.lastname: Crooks
authors.forename: Joycelyn S
authors.initials: JS
authors.lastname: Harrison