AFM Tips

Happy Holidays 2024 from NANOSENSORS AFM probes

by NANOSENSORS
20 December 202420 December 2024
News & Events

It is again time to wish all users of our #AFMprobes Happy Holidays! After we shared a “Halloween tree” in October we now finally have… Read More »Happy Holidays 2024 from NANOSENSORS AFM probes

Energy dissipation on magic angle twisted bilayer graphene

by NANOSENSORS
11 December 202411 December 2024
Science & Technology

Fig. 1 a and b from Alexina Ollier et al 2023 “Energy dissipation on magic angle twisted bilayer graphene”: Pendulum atomic force microscope (p-AFM) tip oscillating on top of a twisted bilayer graphene (tBLG) device is measuring energy loss. a schematics of the measured device. The sample is composed of a p-doped silicon backgate (dark gray), followed by a 300 nm thick silicon dioxide layer (violet) and 10 nm hexagonal boron nitride (hBN, light blue). From the top tBLG is encapsulated with 10nm hBN film. b p-AFM image of the tBLG device, the white dotted rectangle is the device with a size of 4.1 μm × 5.8 μm. NANOSENSORS AdvancedTEC ATEC-CONT tip-view AFM probes were used.

Traditional Joule dissipation omnipresent in today’s electronic devices is well understood while the energy loss of the strongly interacting electron systems remains largely unexplored. Twisted… Read More »Energy dissipation on magic angle twisted bilayer graphene

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

Carbon Thin-Film Electrodes as High-Performing Substrates for Correlative Single Entity Electrochemistry

by NANOSENSORS
26 September 2024
Science & Technology

S15 from Marc Brunet Cabré et al 2024 “Carbon Thin-Film Electrodes as High-Performing Substrates for Correlative Single Entity Electrochemistry” SI-5: Morphology of isolated MXene (Ti3C2Tx) on anC by AFM Figure S15: AFM images of two different regions of anC substrate with dropcasted MXene flakes. (A) Displays an isolated flake on anC and (B) displays multiple flakes which present partial stacking between them. NANOSENSORS PointProbe® Plus PPP-NCHR AFM probes were used for the scanning probe microscopy (SPM) characterization in non-contact mode.

Single-entity electrochemistry (SEE) is an emerging area of research that aims at evaluating the electrochemical response of materials at the micro- and nanoscale. * Several… Read More »Carbon Thin-Film Electrodes as High-Performing Substrates for Correlative Single Entity Electrochemistry

Quantifying mechanical forces during vertebrate morphogenesis

Fig. 1 from : Eirini Maniou et al. 2024 “Quantifying mechanical forces during vertebrate morphogenesis”: The i3D bioprinting with accurately determined position, geometry and stiffness. a, Schematic of a chicken embryo illustrating the experimental workflow: 2–3 µl i3D polymer is pipetted directly onto the rhombocervical neuropore (RNP) and photo-crosslinked with a two-photon laser. The iMeSH structures are shown in green throughout. b, Stereoscope image of an embryo with a star shape photo- crosslinked on the flat neural plate. Scale bars, 200 µm. The star dimensions are indicated in the inset. c, Schematic showing iMeSH compression by apposition of the neural folds. d, Time-lapse images showing the sequential displacement of a rigid iMeSH shape, shown as a 3D confocal reconstruction superimposed on the embryo imaged with transmitted light. Cyan shading, open neural tube; *, zippering point; arrow indicates rotation of the printed shape; scale bar, 50 µm. The times are shown. e, Fire lookup table showing the autofluorescence of iMeSH photo-crosslinked with the indicated laser powers on the same embryo. Scale bar, 25 µm. f, Schematic illustration of AFM stiffness testing of an iMeSH shape; 3D reconstructions of the shape are shown superimposed on a dorsal and transverse schematic of the embryo. Scale bar, 100 µm. g, AFM quantification of iMeSH crosslinked on an embryo at the indicated laser powers. The values were calculated from AFM indentations performed at a rate of 0.5 μm s–1 and depths of 1 μm (30% 7-hydroxycoumarin-3-carboxylic acid (HCC) polyethylene glycol (PEG)) or 2 μm (15% PEG). The force–displacement curves were acquired using NANOSENSORS™ PointProbe® Plus PPP-CONTSCR silicon AFM probes with a typical spring constant of 0.2 N/m.

Morphogenesis requires embryonic cells to generate forces and perform mechanical work to shape their tissues. Incorrect functioning of these force fields can lead to congenital… Read More »Quantifying mechanical forces during vertebrate morphogenesis

Happy Swiss National Holiday 2024 with Smallest Swiss Cross

by NANOSENSORS
31 July 202431 July 2024
News & Events

20 bromine atoms positioned on a sodium chloride surface using the tip of an atomic force microscope at room temperature, creating a Swiss cross with the size of 5.6nm. The structure is stable at room temperature and was achieved by exchanging chlorine with bromine atoms. (Fig: University of Basel, Department of Physics) The image was taken using a NANOSENSORS PointProbePlus PPP-NCL AFM probe

We are celebrating tomorrow’s Swiss National Holiday courtesy of Basel University with the Smallest Swiss Cross – Made of 20 Single Atoms ( a NANOSENSORS… Read More »Happy Swiss National Holiday 2024 with Smallest Swiss Cross

The interface between ice and alcohols analyzed by atomic force microscopy

by NANOSENSORS
29 July 202429 July 2024
Science & Technology

Ice plays a crucial role in our environment, with natural ice formations, such as glaciers, permafrost, river ice, and snow, strongly influencing the temperature, humidity,… Read More »The interface between ice and alcohols analyzed by atomic force microscopy

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