Quantitative test method for evaluation of anti-fingerprint property of coated surfaces
Wu, Linda Y. L.
Ngian, S. K.
Xuan, D. T. T.
Date of Issue2010
School of Materials Science and Engineering
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.
DRNTU::Science::Chemistry::Physical chemistry::Surface chemistry
Applied surface science
© 2010 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Applied Surface Science, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.apsusc.2010.10.101].