nanoindentation

A comparative nanotribological investigation on amorphous and polycrystalline forms of MoS2

by NANOSENSORS
15 November 2024
Science & Technology

Figure S5 from Hesam Khaksar et al. 2024 “A comparative nanotribological investigation on amorphous and polycrystalline forms of MoS2”: AFM image on the scratched area with the AFM (contact mode image) Fig. S5 shows a collection of images captured by the atomic force microscope, which displays scratches on two different materials. The first row shows scratches on amorphous material, while the second row shows scratches on polycrystalline material. Within each row, the force used to create the scratches was increased from 2 to 15 μN . The NANOSENSORS diamond coated DT-NCHR AFM probe was used to create the scratches and capture the images, allowing for a detailed examination of the surface features and material properties.

Molybdenum disulfide (MoS2) is commonly used as a dry lubricant due to its enhanced performance in the absence of oxygen and its elevated temperature stability,… Read More »A comparative nanotribological investigation on amorphous and polycrystalline forms of MoS2

Strong, tough, rapid-recovery, and fatigue-resistant hydrogels made of picot peptide fibres

Fig. 2 from Bin Xue et al. “Strong, tough, rapid-recovery, and fatigue-resistant hydrogels made of picot peptide fibres”: Characterisation of supramolecular and picot GK11 peptide fibres without and with metal Cu2+ coordination. a AFM images of the fibres formed by the self-assembly of GK11 in the absence (top) and presence (bottom) of Cu2+. The graphs below the images correspond to the diameter distributions of the fibres. Scale bar = 1 μm. b, c CD spectrum (b) and FT-IR spectroscopy (c) of the self-assembled GK11 peptide with (GK11/Cu2+) and without Cu2+ (GK11). d As for (a), but for picot fibres (top) and metal ion-clad picot fibres (bottom) formed by GK11 linked with polyacrylamide in the absence and presence of Cu2+. Scale bar = 1 μm. NANOSENSORS PointProbe Plus PPP-SEIHR AFM probes for soft tapping mode were used.

Hydrogels are promising soft materials as tissue engineering scaffolds, stretchable sensors, and soft robotics. * Yet, it remains challenging to develop synthetic hydrogels with mechanical… Read More »Strong, tough, rapid-recovery, and fatigue-resistant hydrogels made of picot peptide fibres

Monitoring SARS-CoV-2 Surrogate TGEV Individual Virions Structure Survival under Harsh Physicochemical Environments

by NANOSENSORS
14 September 202215 March 2023
Science & Technology, Uncategorized

Figure 3 from “Monitoring SARS-CoV-2 Surrogate TGEV Individual Virions Structure Survival under Harsh Physicochemical Environments” by Miguel Cantero et al.: Treatment of TGEV with IGEPAL 0.2% (A). Topographical images before (left) and after (right) IGEPAL treatment (B). Profiles traced over the particles before (black) and after (blue) the treatment. The time interval between images was ~30 s (C). Height distribution of TGEV particles before (black) and after (blue) treatment (n = 103). Counts taken from the distribution curve were normalized for comparison. The peak shifts from the value of the intact particle height to the height of the cores. NANOSENSORS uniqprobe qp-BioAC AFM probes were used for the atomic force microscopy measurements.

Successful airborne transmission of coronaviruses through fluid microdroplets requires a virion structure that must withstand harsh natural conditions. * Because of the strict biosafety requirements… Read More »Monitoring SARS-CoV-2 Surrogate TGEV Individual Virions Structure Survival under Harsh Physicochemical Environments

Nonlinear Biomechanical Characteristics of Deep Deformation of Native RBC Membranes in Normal State and under Modifier Action

by NANOSENSORS
23 September 201915 March 2023
Science & Technology

The mechanical properties and structural organization of membranes determine the functional state of red blood cells (RBCs). Deformability is one of the key physiological and… Read More »Nonlinear Biomechanical Characteristics of Deep Deformation of Native RBC Membranes in Normal State and under Modifier Action

A tension-adhesion feedback loop in plant epidermis

by NANOSENSORS
1 September 201915 March 2023
Science & Technology

Mechanical forces have emerged as coordinating signals for most cell functions. Yet, because forces are invisible, mapping tensile stress patterns in tissues remains a major… Read More »A tension-adhesion feedback loop in plant epidermis