Quantitative test method for evaluation of anti-fingerprint property of coated surfaces

Quantitative test method for evaluation of anti-fingerprint property of coated surfaces

[Display omitted] ▶ Artificial fingerprint liquid is formulated from PDMS, MP and artificial sweat. ▶ Direct determination of anti-fingerprint property of a coated surface can be made. ▶ Test method is confirmed by correlating to actual human fingerprints. ▶ Anti-fingerprint property can be achieved...

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Bibliographic Details
Published in:Applied surface science Vol. 257; no. 7; pp. 2965 - 2969
Main Authors: Wu, Linda Y.L., Ngian, S.K., Chen, Z., Xuan, D.T.T.
Format: Journal Article
Language:English
Published: Amsterdam Elsevier B.V 15-01-2011
Elsevier
Subjects:
Anti-fingerprint
Coating
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Contact
Contact angle
Correlation
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Fingerprints
Human
Hydrophobicity
Liquids
Oleophobicity
Physics
Solvents
Sweat
Oleophobicity
Contact angle
Hydrophobicity
Coating
Anti-fingerprint
Test method
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Summary:[Display omitted] ▶ Artificial fingerprint liquid is formulated from PDMS, MP and artificial sweat. ▶ Direct determination of anti-fingerprint property of a coated surface can be made. ▶ Test method is confirmed by correlating to actual human fingerprints. ▶ Anti-fingerprint property can be achieved on smooth and optically clear surfaces. An artificial fingerprint liquid is formulated from artificial sweat, hydroxyl-terminated polydimethylsiloxane and a solvent for direct determination of anti-fingerprint property of a coated surface. A range of smooth and rough surfaces with different anti-fingerprint (AF) properties were fabricated by sol–gel technology, on which the AF liquid contact angles, artificial fingerprint and real human fingerprints (HF) were verified and correlated. It is proved that a surface with AF contact angle above 87° is fingerprint free. This provides an objective and quantitative test method to determine anti-fingerprint property of coated surfaces. It is also concluded that AF property can be achieved on smooth and optically clear surfaces. Deep porous structures are more favorable than bumpy structure for oleophobic and AF properties.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2010.10.101