Teflon wetting and dewetting on EWOD device for chemiluminescence detector

Author

Xiangyu Zeng ; Kaidi Zhang ; Guowei Tao ; Shih-Kang Fan ; Jia Zhou

Author_Institution

Fudan Univ., Shanghai, China

fYear

2014

fDate

26-30 Jan. 2014

Firstpage

1047

Lastpage

1050

Abstract

A hydrophobicity recoverable EWOD (electrowetting-on-dielectric) based chemiluminescence detector with an integrated signal and heater electrode was developed. X-ray-photoelectron-spectroscopy (XPS) was used to reveal the wetting and dewetting mechanism of Teflon on the EWOD device. It was found that the C-O bond formed on the surface of Teflon after the chemiluminescence reaction leaded to the surface permanent wetting. To recover the contact angle of the Teflon surface, the recovery threshold time and heating temperature were proposed experimentally for dewetting to release C-O bond.

Keywords

X-ray photoelectron spectra; carbon compounds; chemical sensors; chemiluminescence; hydrophobicity; microfluidics; microsensors; wetting; C-O; EWOD device; Teflon dewetting; X-ray photoelectron spectroscopy; XPS; chemiluminescence detector; contact angle; electrowetting-on-dielectric; heater electrode; hydrophobicity recoverable EWOD; integrated signal electrode; recovery threshold time; surface permanent wetting; Annealing; Biosensors; Chemical elements; Detectors; Electrodes; Heat recovery; Proteins;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems (MEMS), 2014 IEEE 27th International Conference on

Conference_Location

San Francisco, CA

Type

conf

DOI

10.1109/MEMSYS.2014.6765824

Filename

6765824