Vectorial scanning force microscopy using a nanowire sensor

Vectorial scanning force microscopy using a nanowire sensor.

Self-assembled nanowire (NW) crystals can be grown into nearly defect-free nanomechanical resonators with exceptional properties, including small motional mass, high resonant frequency and low dissipation. Furthermore, by virtue of slight asymmetries in geometry, a NW's flexural modes are split into doublets oscillating along orthogonal axes. These characteristics make bottom-up grown NWs extre...

Scanning force microscopy of artificial membranes.

Visualization of biological membranes by scanning force microscopy (SFM) has tremendously improved the current understanding of protein-lipid interactions under physiological conditions. SFM is the only tool to directly image processes on surfaces in aqueous solution at molecular resolution. Besides being a supportive means to confirm results on lipid phases and domains obtained from fluorescen...

DNA height in scanning force microscopy.

The measured height of DNA molecules adsorbed on a mica substrate by scanning probe microscopy is always less than the theoretical diameter. In this paper we show that, when imaged in ambient conditions, the molecules are usually immersed in the salt layer used to adsorb them to the substrate. This layer distorts the measurement of DNA height and is the main source of error but not the only one...

Keysight Technologies Combining Atomic Force Microscopy with Scanning Electrochemical Microscopy

Combining Atomic Force Microscopy and Laser Scanning Confocal Microscopy

Introduction The visualisation of sample elements using various forms of microscopy relies not only on magnification but also contrast. As such, differing forms of microscopy offer different information about a sample. Laser scanning confocal microscopy (LSCM) provides information about the 3D location of a particular, labelled component within a sample and has the additional advantage of exclu...