AFM – Page 5 – TechConnect Briefs

Viscosity measurements of PEO solutions by AFM with long nanowires

Hosseini M., Yazdanapanah M.M., Siddique S., Cohn R.W., University of Louisville, US

We recently demonstrated that long metal nanoneedles grown on atomic force microscope (AFM) probes can give very clear measurements of the surface tension, evaporation rate and viscosity of simple liquids. However, in the case of [...]

Hollow Atomic Force Microscopy Probes for Nanoscale Dispensing of Liquids

Meister A., Przybylska J., Niedermann P., Santschi C., Heinzelmann H., CSEM SA, CH

The demand for specific tools intended for the deposition of small amount of material on a nanoscale at predefined location is continuously increasing. Several dispensing tools for liquid, such as ink-jet or pin-spotting heads have [...]

Atomic Force/Scanning Probe Microscopy of Pharmaceutical and Biological Materials

Chernoff D.A., Advanced Surface Microscopy, Inc., US

AFM is a valuable tool for a wide range of materials and device analysis. AFM images of particles and biopolymers are valued because direct visualization and measurement of individual objects complements the average measures obtained [...]

Characterizing Membrane Sorption and Diffusion with Flux Lateral Force Microscopy

Killgore J.P., Overney R.M., University of Washington, US

Bulk permeability measurements provide an incomplete descriptor of permeability when considering heterogeneous or anisotropic membranes. Localized measurements of flux allow for independent assessment of constituent contributions to total permeability. Analogous to a puck on an [...]

Modified AFM Probes for Nanoscale Biomolecular Recognition Studies

Johnson W.T., Agilent Technologies, US

Biomolecular interactions, which are responsible for many physiologically important processes, can be studied by molecular recognition force microscopy (MRFM). In MRFM, nanoNewton scale single molecule interactions are observed and quantified one by one as an [...]

Effect of functionalization on the self-assembling propensity of beta sheet forming peptides

Taraballi F., Campione M., Vescovi A.L., Sassella A., Hwang W., Paleari A., Gelain F., University of Milan-Bicocca, IT

Synthetic polymers and bioinspired fibrous materials have a significant impact in medicine in the recent years. The design and fabrication of new bio-materials has a great influence in several scientific and medical communities. The potential [...]

Interaction between alternating current and cathodic protection over nano sized/structured surface metals

Lazzari L., Ormellese M., Bueno V., Politecnico di Milano, IT

Serious cases of corrosion in metal structures under both alternating current (AC) and cathodic protection (CP) have been reported. The objective of this research is the proposal of a mechanism by which AC affects the [...]

Nanoscale Resolution Deformation Measurements at Crack Tips of Nanostructured Materials and Interface Cracks

Keller J., Vogel D., Gollhardt A., Michel B., Fraunhofer Institute for Reliability and Microintegration, DE

The trend towards the application of nanoparticle filled materials in the aerospace and automotive electronics sectors have led to a strong need in material characterization on the micro and nano scale. In addition MEMS and [...]

Attaching Biological Molecules to AFM Probes for Nanoscale Molecular Recognition Studies

Travis Johnson W., Agilent Technologies, US

Atomic Force Microscopy (AFM) is an important tool for nanoscale molecular recognition studies. A strong suit of AFM is its ability to measure hardness/elasticity, nonspecific adhesion, or ligand-receptor interactions at the picoNewton scale. Molecular interactions [...]

Commercially Available High-Throughput Dip Pen Nanolithography®

Haaheim J., Nafday O., Fragala J., Shile R., Val V., NanoInk, US

We present methods and applications of the commercially available 2D nano PrintArray(TM), which provides massive scalability for dip pen nanolithography. We will discuss current applications and future development.