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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… 

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Chemically characterizing the cortical cell nano-structure of human hair using atomic force microscopy integrated with infrared spectroscopy (AFM-IR)

Figure 2 from A. P. Fellows et al “Chemically characterizing the cortical cell nano-structure of human hair using atomic force microscopy integrated with infrared spectroscopy (AFM-IR)”: AFM-IR data obtained from a human hair cross-section (approx. 300 nm thick) showing (a) a schematic structural representation of the cortical cell (b) average spectra corresponding to each observed region (macrofibril and Ext-matrix) (c) AFM height map and (d)-(l) IR-intensity maps recorded in contact mode across a 2.5 × 2.5 μm region of the surface at a number of different infrared frequencies corresponding to contributions observed in the spectra (each shown above the corresponding image) for a representative fibre section. NANOSENSORS AdvancedTEC ATEC-CONTAu tip view AFM probes were used.

The structure of hair fibres has been the focus of much research over the last century with several techniques used to investigate their structure. *… 

Read More »Chemically characterizing the cortical cell nano-structure of human hair using atomic force microscopy integrated with infrared spectroscopy (AFM-IR)