Facile stamp patterning method for superhydrophilic/superhydrophobic surfaces

Journal Article · Mon Nov 16 04:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4936177· OSTI ID:22486084

Lyu, Sungnam; Hwang, Woonbong ^[1]

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1. Department of Mechanical Engineering, POSTECH, Pohang 680-749 (Korea, Republic of)

Patterning techniques are essential to many research fields such as chemistry, biology, medicine, and micro-electromechanical systems. In this letter, we report a simple, fast, and low-cost superhydrophobic patterning method using a superhydrophilic template. The technique is based on the contact stamping of the surface during hydrophobic dip coating. Surface characteristics were measured using scanning electron microscopy and energy-dispersive X-ray spectroscopic analysis. The results showed that the hydrophilic template, which was contacted with the stamp, was not affected by the hydrophobic solution. The resolution study was conducted using a stripe shaped stamp. The patterned line was linearly proportional to the width of the stamp line with a constant narrowing effect. A surface with regions of four different types of wetting was fabricated to demonstrate the patterning performance.

• OSTI ID: 22486084
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 20 Vol. 107; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DIP COATING
DRUGS
MEDICINE
PERFORMANCE
RESOLUTION
SCANNING ELECTRON MICROSCOPY
SURFACES
X RADIATION