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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

CO(2) laser treatment for stabilization of the superhydrophobicity of carbon nanotube surfaces

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Ramos, S. C. [1, 2] ; Vasconcelos, G. [3] ; Antunes, E. F. [1, 4] ; Lobo, A. O. [1, 4] ; Trava-Airoldi, V. J. [1] ; Corat, E. J. [1]
Total Authors: 6
[1] Inst Nacl Pesquisas Espaciais, Lab Associado Sensores & Mat, BR-12227010 Sao Jose Dos Campos, SP - Brazil
[2] Univ Estadual Bahia UNEB, BR-46400000 Caetite, BA - Brazil
[3] Ctr Tecn Aeroesp, Inst Estudos Avancados IEAV, BR-12231970 Sao Jose Dos Campos, SP - Brazil
[4] CTA, Inst Tecnol Aeronaut, BR-12228900 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B; v. 28, n. 6, p. 1153-1157, NOV 2010.
Web of Science Citations: 17

In this work, the authors demonstrate the formation of stable superhydrophobic vertically aligned multiwalled carbon nanotube (VACNT) surfaces through CO(2) laser irradiance, in which the contact angle value reached 161 degrees. VACNT arrays were synthesized by microwave plasma chemical vapor deposition using N(2)/H(2)/CH(4) {[}10/90/14 SCCM (SCCM denotes cubic centimeter per minute at STP)]. CO(2) laser technique was applied on VACNT surfaces with irradiance at different laser powers to promote the great stability of superhydrophobic surfaces. Contact angle measurement reveals that irradiated VACNT surface is superhydrophobic at all irradiances tested. Unlike as-grown VACNT, the samples treated with CO(2) laser show no sign of water seepage even after a prolonged period of time (similar to 24 h). This characteristic is very interesting and has various possible functional applications in micro- and nanomaterials and devices. (C) 2010 American Vacuum Society. {[}DOI: 10.1116/1.3502024] (AU)

FAPESP's process: 07/00013-4 - New materials, studies and applications of CVD diamond, diamond-like-carbon (DLC) and nanostructured carbon obtained by chemical vapor deposition
Grantee:Evaldo Jose Corat
Support type: Research Projects - Thematic Grants
FAPESP's process: 08/11642-5 - Development of structures based on carbon nanotubes, bioresorbable polymers and carbon fibers for studies with regenerative cells and hematopoietic stem cells
Grantee:Anderson de Oliveira Lobo
Support type: Scholarships in Brazil - Doctorate