Electrosprayed superhydrophobic PTFE: a non-contaminating surface
Creators
- 1. Departamento de Fisica, Universidade Federal do Parana 81531-990 Centro Politecnico Jardim das Americas, Curitiba, Parana (Brazil)
- 2. Grupo de Plasma e Materiais, Universidade Estadual Paulista, 18087-180 Avenida Tres de Marco, 511 Sorocaba, Sao Paulo (Brazil)
- 3. Departamento de Patologia Basica, Universidade Federal do Parana 81531-990 Centro Politecnico Jardim das Americas, Curitiba, Parana (Brazil)
Description
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 1730 for aqueous solutions were measured on the PTFE surface. Water drop sliding angles at 20 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
Additional details
Identifiers
- DOI
- 10.1088/0022-3727/40/24/027;
- PII
- S0022-3727(07)54201-4;
Publishing Information
- Journal Title
- Journal of Physics. D, Applied Physics
- Journal Volume
- 40
- Journal Issue
- 24
- Journal Page Range
- p. 7778-7781
- ISSN
- 0022-3727
- CODEN
- JPAPBE
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39040209
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- AQUEOUS SOLUTIONS; BIOTECHNOLOGY; COATINGS; HYSTERESIS; POLYTETRAFLUOROETHYLENE; SENSORS; WATER; X-RAY PHOTOELECTRON SPECTROSCOPY
- Descriptors DEC
- DISPERSIONS; ELECTRON SPECTROSCOPY; FLUORINATED ALIPHATIC HYDROCARBONS; HALOGENATED ALIPHATIC HYDROCARBONS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; MIXTURES; ORGANIC COMPOUNDS; ORGANIC FLUORINE COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC POLYMERS; OXYGEN COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; POLYETHYLENES; POLYMERS; POLYOLEFINS; SOLUTIONS; SPECTROSCOPY