The surface wettability was characterized by measuring the static water contact angle, which was obtained from a DSA 100 drop shape analysis system (KRÜSS) with a computer-controlled liquid dispensing system. One μL DI water droplets were deposited onto substrate surfaces, and the water contact angles were measured within 10 s through the analysis of photographic images. The cross-linking kinetics of BPMPC coating was investigated by a UV—vis spectroscopy (Varian) with 254 nm UV light. The thickness of the spin-coated polymer layer on the silicon substrates and CarboSil substrates were measured by a M-2000 V Spectroscopic Ellipsometer (J.A Woollam co., INC.) with a white light source at three incident angles (65°, 70°, and 75°). The thickness of the modified layer was measured and calculated using a Cauchy layer model. Infrared spectroscopy studies of polymer coated films were done using a Thermo-Nicolet model 6700 spectrometer equipped with a variable angle grazing angle attenuated total reflection (GATR-ATR) accessory (Harrick Scientific).
Dsa 100 drop shape analysis system
Manufactured by Krüss
Sourced in Germany
The DSA 100 is a drop shape analysis system developed by Krüss. It is designed to measure the contact angle and surface tension of liquids on solid surfaces. The system uses high-resolution cameras and advanced software to capture and analyze the shape of liquid droplets on a variety of materials.
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Lab products found in correlation
Uv vis spectroscopy, by Agilent Technologies (1 mentions)
Nicolet 6700 fourier transform infrared ft ir spectrometer, by Thermo Fisher Scientific (1 mentions)
Infinite m200 pro, by Tecan (1 mentions)
Jsm 6700f, by JEOL (1 mentions)
Uv 2600 spectrophotometer, by Shimadzu (1 mentions)
Atomic force microscope, by Veeco (1 mentions)
Sars cov 2 nucleic acid detection kit, by Daan Gene (1 mentions)
7500 fast real time pcr, by Thermo Fisher Scientific (1 mentions)
Magmax viral rna isolation kit, by Thermo Fisher Scientific (1 mentions)
7 protocols using dsa 100 drop shape analysis system
1
Surface Wettability and Polymer Characterization
2
Comprehensive Characterization of Nanomaterials
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Ultraviolet–visible (UV–vis) absorption spectra were recorded using a UV-2600 spectrophotometer (Shimadzu) in a quartz cuvette or an Infinite M200 Pro multimode microplate reader (Tecan) in a microplate. All fluorescence measurements were conducted using the Tecan plate reader in ultrathin special optics PS microplates with minimal background fluorescence. Morphologies of nanostructures were examined by a JEOL JSM-6700F field emission-scanning electron microscope (FE-SEM) operating at 10 kV. Energy-dispersive X-ray spectroscopy (EDS) and elemental mapping were acquired with a high-resolution Zeiss Gemini500 thermal FE-SEM at 6 kV accelerating voltage. Surface hydrophobicity was indicated by water contact angles measured with a DSA100 Drop Shape Analysis System (Kruss) in ambient conditions. Protein secondary structures were assessed by a Nicolet 6700 Fourier transform infrared (FTIR) spectrometer (Thermo Fisher Scientific) in the attenuated total reflection (ATR) mode. All electrochemical measurements were performed on a CHI 630E Electrochemical Analyzer (CH Instruments) in a standard three-electrode configuration comprised of a glassy carbon working electrode, a Pt plate counter electrode, and a Ag/AgCl reference electrode.
3
Catheter Coating Surface Wettability
4
Characterizing Surface Topography and Wettability
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The surface topography before and after coating with NPs was scanned by atomic force microscope (Veeco Instruments, Santa Barbara, CA, USA) under ambient conditions. The images were analyzed by using commercial Scanning Probe Image Processor (SPIP 6.0) software (Image Metrology ApS, Hørsholm, Denmark). Meanwhile, the water contact angle was analyzed with DSA100 drop shape analysis system (KRÜSS GmbH, Hamburg, Germany). The drop shape was photographed with a camera and the contact angle was calculated with the software provided by the manufacturer.
5
Characterization of Self-Cleaning Glass Surfaces
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The GL-20 G-II High-Speed Refrigerated Centrifuge that experiment used was from Anting Scientific Instruments (Shanghai, China), TU-1901 dual-beam UV visible photometer was from General Analysis Instrument Co., Ltd (Beijing, China), and the pH was debugged with the pHS-3E pH meter from Leici Instrument Factory (Shanghai, China). The water contact angle (WCA) of different SCGS was measured by the DSA 100 drop-shape analysis system (Krüss GmbH, Germany). MagMAX™ Viral RNA Isolation Kit was purchased from Thermo Fisher Scientific (Guangzhou, China). SARS -CoV-2 Nucleic Acid Detection Kit based on fluorescence quantitative PCR was purchased from Daan Gene (Guangzhou, China) and PCR was performed by 7500 Fast Real-Time PCR purchased from Thermo Fisher Scientific (Guangzhou, China). The WCA of SCGS needs to be vacuum dried at 40 °C for two days before measuring. The smartphone (Redmi k30, China) took the images. The RGB values were obtained from the Color recognition picker an application (APP) downed from the mobile app store. The wd-9403 C ultraviolet analyzer (Guangzhou, China) provided a unified photographic environment.
6
Surface Tension Measurement of Protein Solutions
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Surface tension data were obtained using a DSA 100 Drop Shape Analysis System (Krüss GmbH, Germany). Approximately 25 µl drops of protein in water at various concentrations were suspended from a 1.830 mm diameter syringe needle. Photos were taken at an average speed of 3 fps and the drop shape was monitored over 15 min. The shape factor was iterated from the photos of the drops by the DSA1 software. Times shown in the data denote the time since the first measurement. It takes ∼8 s, from the first depression of the syringe plunger (liquid exiting the needle), for the drop to be formed and to stabilise. Therefore, changes during the first 8 s are not measured using this system.
7
Water Contact Angle Measurement of Monolayers
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During growth of the film, the water contact angle of each monolayer was analyzed with a DSA100 drop shape analysis system, KRÜSS GmbH (Hamburg, Germany). Before measurement, the sample was dried with nitrogen and analyzed immediately. The drop shape was snapped with a camera and the contact angle was calculated with the software provided by the manufacturer.
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