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Atomic Force Microscopy

Comparative analysis of frictional behavior and mechanism of molybdenum ditelluride with different structures

Figure 3 from “Comparative analysis of frictional behavior and mechanism of molybdenum ditelluride with different structures” by Lina Zhang et al.: Atomic-scale friction maps of MoTe 2. (a) Mapping of friction signal of 1T′-MoTe 2. (b) Reciprocal lattice obtained by 2D FFT on (a). (c) Atomic-level stick–slip map obtained by FFT filtering of (a). (d) Unit cell structure of 1T′-MoTe 2. (e) Friction profile extracted along the blue dashed line in (c). (f) Mapping of friction signal of 2H-MoTe 2 . (g) Reciprocal lattice obtained by 2D FFT on (f). (h) Atomic-level stick–slip map obtained by FFT filtering of (f). (i) Unit cell structure of 2H-MoTe2. (j) Friction profile extracted along the blue dashed line in (h). NANOSENSORS PointProbe Plus PPP-LFMR AFM probes were used.

Two-dimensional (2D) transition metal dichalcogenides (TMDCs) have layered structures with excellent tribological properties. * Since the energy difference between hexagonal-molybdenum ditelluride (2H-MoTe2) and distorted octahedral-molybdenum… Read More »Comparative analysis of frictional behavior and mechanism of molybdenum ditelluride with different structures

Single Electrochemical Impacts of Shewanella oneidensis MR-1 Bacteria for Living Cells Adsorption onto a Polarized Ultramicroelectrode Surface

Figure 5 from “Single Electrochemical Impacts of Shewanella oneidensis MR-1 Bacteria for Living Cells Adsorption onto a Polarized Ultramicroelectrode Surface” by Hassiba Smida et al. AFM images recorded in water of (A and C) CF and (B and D) Pt UME surfaces (A and B) before and (C and D) after a chronoamperometry measurement at +0.8 V vs Ag/AgCl in 2 mL of 20 mM K4Fe(CN)6 0.1 M PBS at pH 7.4 as aqueous solution under inert atmosphere (N2) in the presence of 109 cells of living SOMR1 bacteria sample. The circle in white dashed line is added for showing the UME disk on the AFM images. NANOSENSORS uniqprobe qp-SCONT AFM probes were used.

In the past few years, several novel analytical methods with high sensitivity and spatial-temporal resolution that enable qualitative and quantitative analysis at single-cell and subcellular… Read More »Single Electrochemical Impacts of Shewanella oneidensis MR-1 Bacteria for Living Cells Adsorption onto a Polarized Ultramicroelectrode Surface