Colloidal probe atomic force microscopy measurements on pristine gas bubbles, agglomerates and particle-laden gas bubbles
References to related material | https://doi.org/10.1021/acs.langmuir.3c01781 | |
References to related material | https://doi.org/10.1016/j.colsurfa.2024.134660 | |
Description of the data | Experimental Atomic Force Microscopy data of agglomeration and bubble-particle hetero-coagulation Detailed interpretation of the raw AFM data in this repository is found in these research articles: https://doi.org/10.1021/acs.langmuir.3c01781 Jan Nicklas, Lisa Ditscherlein and Urs A. Peuker. "Particle–Bubble Interactions: an Investigation of the Three-Phase Contact Line by Atomic Force Microscopy." Langmuir 39.38 (2023): 13630-13640. https://doi.org/10.1016/j.colsurfa.2024.134660 Jan Nicklas and Urs A. Peuker. "Stability of Bubble-Particle Hetero-Coagulates Accessed by Atomic Force Microscopy to Understand the Froth Flotation of Agglomerating Hydrophobic Fines." Colloids and Surfaces A: Physicochemical and Engineering Aspects (2024) If you are new to the interpretation of AFM data, the following resource is a good starting point: https://doi.org/10.1016/j.surfrep.2005.08.003 Butt, Hans-Jürgen, Brunero Cappella, and Michael Kappl. "Force measurements with the atomic force microscope: Technique, interpretation and applications." Surface science reports 59.1-6 (2005): 1-152. All measurements were carried out with silanized alumina colloidal probes. The spherical alumina particles (DAW-07, Denka, Japan) were hydrophobized by silanization with the silane 1H,1H,2H,2H-Perfluoro octyltriethoxysilane (AB104055, C14H19F13O3Si, abcr, Germany). The following data sets of base-line corrected raw AFM-data are included in the folder "...\AFM_data": 3 x particle - bubble interaction 3 x particle-laden bubble - particle interaction 1 x agglomerate - particle interaction The numbered files "measurement_*.txt" are measurements of the force F as a function of the piezo displacement dX for the interaction between a colloidal probe particle and an agglomerate or a concentrically aligned bubble or particle-laden bubble. 1. column dX_t µm piezo displacement on approach (trace) 2. column F_t nN measured force on approach (trace) 3. column dX_r µm piezo displacement on retraction (retrace) 4. column F_r nN measured force on retraction (retrace) Each dataset includes a metadata file "info_*.txt" with the following information: - interaction type - cantilever spring constant k_c - colloidal probe radius R_CP - bubble radius R_b (if applicable) - colloidal probe material - electroly solution the measurement was taken in - piezo displacement velocity v - comment (if applicable) AFM: Measurements were taken with an XE100 AFM (Park Systems, Korea) that was equipped with the long-range scan head (25 µm scan range) and a liquid probe hand. The measurements were taken in a cylindrical dish (~3 µL volume) filled with electrolyte solution. Base-line correction: The dX-F raw data was corrected in Matlab by a linear first order correction. The slope for this correction was determined by fitting straight line to the first 100-2000 data points of the measurements. The number of data points used in the correction is the same for each "measurement_*.txt" of a dataset. | |
Type of the data | Dataset | |
Total size of the dataset | 200028705 | |
Author | Nicklas, Jan | |
Upload date | 2024-07-08T15:00:56Z | |
Publication date | 2024-07-08T15:00:56Z | |
Publication date | 2024-07-08 | |
Abstract of the dataset | This dataset contains experimental Atomic Force Microscopy (AFM) force-displacement measurements of poorly wetted alumina particles (colloidal probes) < 15 µm interacting with pristine gas bubbles, agglomerates and particle-laden gas bubbles (hetero-coagulates) in an aqueous environment. The data was generated in the context of the Collaborative Research Center CRC 920 (Project ID 169148856 – subproject B04) that is funded by the German Research Foundation (DFG). The data set is of interest for researches that study the agglomeration or hetero-coagulation in liquid environment, and it is expected to be of particular interest to those that are concerned with the simulation and modeling of these processes (for example by Discrete Element Method). The AFM raw data was baseline corrected to increase the accessibility of the data sets to those less familiar with the AFM. A detailed interpretation of the AFM data in this repository is found in https://doi.org/10.1021/acs.langmuir.3c01781 and https://doi.org/10.1016/j.colsurfa.2024.134660. | |
Public reference to this page | https://opara.zih.tu-dresden.de//handle/123456789/758 | |
Public reference to this page | https://doi.org/10.25532/OPARA-536 | |
Publisher | Technische Universität Bergakademie Freiberg | |
Licence | Attribution 4.0 International | en |
URI of the licence text | http://creativecommons.org/licenses/by/4.0/ | |
Specification of the discipline(s) | 4 | |
Specification of the discipline(s) | 3::32 | |
Title of the dataset | Colloidal probe atomic force microscopy measurements on pristine gas bubbles, agglomerates and particle-laden gas bubbles | |
Research instruments | Atomic Force Microscope XE100 (Park Systems, Korea) equipped with the long-range scan head (25 µm) and a liquid probe hand | |
Project abstract | The project investigates the mechanisms of agglomeration and heterocoagulation of model inclusion particles in a water-based ambient temperature model. The focus is on the kinetics of continuous heterocoagulation and on the micro-processes during the contact between bubble and particle. Furthermore, for the first time flotation of inclusions is considered and quantified as a cleaning mechanism. The insight in the fundamental mechanical properties of the agglomerates will be generated with a molecular-dynamic multi-scale approach both in the model system and in the real system, allowing the validation of the results of the model system. Project description taken from GEPRIS (https://gepris.dfg.de/gepris/projekt/196865244?language=en). | |
Public project website(s) | https://tu-freiberg.de/en/research/sfb920 | |
Public project website(s) | https://tu-freiberg.de/en/fakult4/mvtat | |
Public project website(s) | https://gepris.dfg.de/gepris/projekt/196865244 | |
Project title | CRC920 (B04) - Tailored agglomeration to increase separation efficiency |
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