Electrosprayed superhydrophobic PTFE: a non-contaminating surface

被引：31

作者：

Burkarter, Ezequiel ^{[1
]}

Saul, Cyro K. ^{[1
]}

Thomazi, Fabiano ^{[1
]}

Cruz, Nilson C. ^{[2
]}

Zanata, Silvio M. ^{[3
]}

Roman, Lucimara S.

Schreiner, Wido H. ^{[1
]}

机构：

[1] Univ Fed Parana, Ctr Politec Jardim Amer, Dept Fis, BR-81531 Curitiba, Parana, Brazil

[2] Univ Estadual Paulista, Grp Plasma Mat, BR-18087 Sorocaba, SP, Brazil

[3] Univ Fed Parana, Ctr Politec Jardim Amer, Dept Patol Basica, BR-81531 Curitiba, Parana, Brazil

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2007年 / 40卷 / 24期

关键词：

D O I：

10.1088/0022-3727/40/24/027

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页码：7778 / 7781

页数：4

共 24 条

[1] Purity of the sacred lotus, or escape from contamination in biological surfaces [J].

Barthlott, W ;

Neinhuis, C .

PLANTA, 1997, 202 (01) :1-8

[2]

Beamson G., 1992, HIGH RESOLUTION XPS, DOI DOI 10.1002/ADMA.19930051035

[3] Superhydrophobic electrosprayed PTFE [J].

Burkarter, E. ;

Saul, C. K. ;

Thomazi, F. ;

Cruz, N. C. ;

Roman, L. S. ;

Schreiner, W. H. .

SURFACE & COATINGS TECHNOLOGY, 2007, 202 (01) :194-198

[4] Automated microdroplet platform for sample manipulation and polymerase chain reaction [J].

Chabert, Max ;

Dorfman, Kevin D. ;

de Cremoux, Patricia ;

Roeraade, Johan ;

Viovy, Jean-Louis .

ANALYTICAL CHEMISTRY, 2006, 78 (22) :7722-7728

[5]

Chung Yip-Wah., 2001, PRACTICAL GUIDE SURF

[6] Substrate patterning: an emerging technology for the study of neuronal behavior [J].

Corey, JM ;

Feldman, EL .

EXPERIMENTAL NEUROLOGY, 2003, 184 :S89-S96

[7]

CROWTHER RJ, 2001, ELISA GUIDEBOOK METH, V149

[8] Protein biochip systems for the clinical laboratory [J].

Dupuy, AM ;

Lehmann, S ;

Cristol, JP .

CLINICAL CHEMISTRY AND LABORATORY MEDICINE, 2005, 43 (12) :1291-1302

[9] Digital microfluidic and biotechnology. [J].

Fouillet, Y ;

Achard, JL .

COMPTES RENDUS PHYSIQUE, 2004, 5 (05) :577-588

[10] An integrated microfabricated cell sorter [J].

Fu, AY ;

Chou, HP ;

Spence, C ;

Arnold, FH ;

Quake, SR .

ANALYTICAL CHEMISTRY, 2002, 74 (11) :2451-2457

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