Design methodology for nano-engineered surfaces to control adhesion: Application to the anti-adhesion of particles

• Published in: Applied surface science 2016-12, Vol.389, p.889-893
• Main Authors: Kim, Taekyung, Min, Cheongwan, Jung, Myungki, Lee, Jinhyung, Park, Changsu, Kang, Shinill
• Format: Article
• Language: English
• Subjects: Control of adhesion force; Derjaguin approximation; Nano-engineered surfaces; Particle adhesion
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2016.08.015

[Display omitted] •A design method using the Derjaguin approximation with FEA for low-adhesion surface.•Fabrication of nanostructures with small adhesion forces by presented design method.•Characterization of adhesion force via AFM FD-curve with modified atypical tips.•Verification of low-adhesion of designed surfaces using centrifugal detachment tests.•Investigation of interdependence of hydrophobicity and anti-adhesion force. With increasing demand for means of controlling surface adhesion in various applications, including the semiconductor industry, optics, micro/nanoelectromechanical systems, and the medical industry, nano-engineered surfaces have attracted much attention. This study suggests a design methodology for nanostructures using the Derjaguin approximation in conjunction with finite element analysis for the control of adhesion forces. The suggested design methodology was applied for designing a nano-engineered surface with low-adhesion properties. To verify this, rectangular and sinusoidal nanostructures were fabricated and analyzed using force-distance curve measurements using atomic force microscopy and centrifugal detachment testing. For force-distance curve measurements, modified cantilevers with tips formed with atypical particles were used. Subsequently, centrifugal detachment tests were also conducted. The surface wettability of rectangular and sinusoidal nanostructures was measured and compared with the measured adhesion force and the number of particles remaining after centrifugal detachment tests.