Various applications require surfaces with anti-fingerprint properties. This article reviews the surface properties that govern the fingerprinting process. The achievement of surfaces free of fingerprints deals with the construction of amphiphobic surfaces that repel water and oil. Based on wetting theories, two key parameters (Surface energy and Roughness) show significant effects on surface wettability. We address in this paper, the basic requirements and strategies of designing and manufacturing amphiphobic surfaces using different substrates. The synergetic effect of low surface energy and functional surface morphology leads to reduced wettability, resulting in anti-fingerprint properties. The trends of future investigations and fundamental conclusions are drawn. The remaining challenges and future outlook of this field are also highlighted.

In this paper, we have studied the effect of the degree of asymmetry and peakedness on the performances of a rough contact. A numerical model is proposed to evaluate the real area, the number of contacting asperities and the normal stiffness. The contact between two rough surfaces was modeled as a contact between a rigid flat and an elastic–plastic rough surface taking into account the work hardening and interaction among asperities. The Pearson system of frequency curves was used to generate non-Gaussian random surfaces. Results show that a negative skewness and/or a low kurtosis improve the contact performances by increasing the normal stiffness. This increase is governed by much more asperities into contact and more elastic behavior.

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