The topography and morphology of PDMS membranes were characterized using atomic force microscope (AFM, Bruker BioScope Resolve), scanning electron microscope (SEM, JSM-6610LV) and laser scanning microscope (VK-X100, Keyence). Static contact angle was measured using an DSA100S system (Kruss, Germany) under atmospheric condition. In impinging experiments, dynamic droplet behaviors were recorded with a high-resolution camera equipped in DSA100S system at a frame rate of 1000 fps [31 ,32 ]. The experiments were conducted in triplicate for each condition.
Dsa100s system
Manufactured by Krüss
Sourced in Germany
The DSA100S system is a versatile lab equipment designed for precise surface and interfacial tension measurements. It provides accurate and reliable data for a wide range of liquid samples and materials. The system's core function is to determine the surface or interfacial tension of liquids using the pendant drop or tilting base methods.
Automatically generated - may contain errors
3 protocols using dsa100s system
1
Characterization of PDMS Membrane Topography
2
Characterization of VG-nanoAu Morphology
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The morphology and elemental mapping of VG and VG modified with nanoAu were characterized through field-emission scanning electron microscopy (SEM, ThermoFisher, FEI Apreo S, Waltham, MA, United States). Water contact angles (CA) were measured at room temperature with a DSA100S system (KRUSS, Germany). All electrochemical measurements were performed on a customized electrochemical micro-workstation (Refresh AI Biosensor Co., Ltd., Shenzhen, China) at room temperature.
3
Characterization of Superhydrophobic Copper Surfaces
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Representative
samples
of the silanized copper plate and mesh were placed on stubs using
conductive adhesive and examined using a scanning electron microscope
(FEI, Nova Nano SEM 430). Optical profilometry was also used to examine
the surface of the copper plate. Images of the copper surface located
1 mm from the hole was obtained. The sample was attached onto a flat
silicon surface that served as the reference surface. Optical scans
obtained from the profilometer (Bruker Contour GT-I) were processed
and analyzed using the instrument’s accompanying software (Contour
Elite). Because of the relatively large surface area to be examined,
multiple images were recorded and the software-stitching capability
was used to construct an integrated map over an extended field of
view.
The contact angles of 10 μL sessile water drops
dispensed on the substrate were measured using the Kruss DSA100S system.
The mean value from 10 separate readings was found to be 158°
(σ = 0.80°). The inclination angle needed for the displacement
of 10 μL drops was found to be 3°.
samples
of the silanized copper plate and mesh were placed on stubs using
conductive adhesive and examined using a scanning electron microscope
(FEI, Nova Nano SEM 430). Optical profilometry was also used to examine
the surface of the copper plate. Images of the copper surface located
1 mm from the hole was obtained. The sample was attached onto a flat
silicon surface that served as the reference surface. Optical scans
obtained from the profilometer (Bruker Contour GT-I) were processed
and analyzed using the instrument’s accompanying software (Contour
Elite). Because of the relatively large surface area to be examined,
multiple images were recorded and the software-stitching capability
was used to construct an integrated map over an extended field of
view.
The contact angles of 10 μL sessile water drops
dispensed on the substrate were measured using the Kruss DSA100S system.
The mean value from 10 separate readings was found to be 158°
(σ = 0.80°). The inclination angle needed for the displacement
of 10 μL drops was found to be 3°.
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