Electrosprayed superhydrophobic PTFE: a non-contaminating surface


Autoria(s): Burkarter, Ezequiel; Saul, Cyro K.; Thomazi, Fabiano; Cruz, Nilson C.; Zanata, Silvio M.; Roman, Lucimara S.; Schreiner, Wido H.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

21/12/2007

Resumo

This paper reports on the exposure of superhydrophobic polytetrafluoroethylene ( PTFE) coatings to common aqueous solutions which are used in biology, biotechnology and chemical sensor applications. Advancing contact angles as high as 173 degrees for aqueous solutions were measured on the PTFE surface. Water drop sliding angles at 2 degrees show a very low contact angle hysteresis. X-ray photoelectron spectroscopy measurements confirm that aqueous solutions can move or stay on the superhydrophobic surface without contamination. Owing to the chemical inertness of the polymer, these results indicate that superhydrophobic PTFE can be used in lab-on-a-chip and multi-sensor devices as well as in biological cultures, where aqueous solutions meet solid surfaces, without contaminating the interface.

Formato

7778-7781

Identificador

http://dx.doi.org/10.1088/0022-3727/40/24/027

Journal of Physics D-applied Physics. Bristol: Iop Publishing Ltd, v. 40, n. 24, p. 7778-7781, 2007.

0022-3727

http://hdl.handle.net/11449/33866

10.1088/0022-3727/40/24/027

WOS:000251798100028

Idioma(s)

eng

Publicador

Iop Publishing Ltd

Relação

Journal of Physics D: Applied Physics

Direitos

closedAccess

Tipo

info:eu-repo/semantics/article