Journal
CHEMICAL PHYSICS LETTERS
Volume 352, Issue 5-6, Pages 328-333Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0009-2614(01)01468-3
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The size-fractionation of multi-walled carbon nanotube (MWNT) in the dimethylformamide (DMF) solution of poly(vinylidene fluoride) (PVDF) has been achieved by controlled sonication-centrifugation cycles. The Z-scan experiments and fluence-dependent transmission measurements with nanosecond laser pulses of 532 nm wavelength show that the optical limiting behavior of MWNTs in PVDF/DMF solution is size-dependent. The tubes of large aspect ratio possess stronger limiting properties, The size-dependent effect is more obvious at low input fluence than at high input fluence. (C) 2002 Elsevier Science B.V. All rights reserved.
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