Search results
Results from the WOW.Com Content Network
Non-contact atomic force microscopy (nc-AFM), also known as dynamic force microscopy (DFM), is a mode of atomic force microscopy, which itself is a type of scanning probe microscopy. In nc-AFM a sharp probe is moved close (order of Angstroms ) to the surface under study, the probe is then raster scanned across the surface, the image is then ...
AFM has also been used to measure, in an aqueous environment, the dispersion force due to polymer adsorbed on the substrate. [17] Forces of the order of a few piconewtons can now be routinely measured with a vertical distance resolution of better than 0.1 nanometers. Force spectroscopy can be performed with either static or dynamic modes.
The instrumentation involved for pc-AFM is very similar to that necessary for traditional AFM or the modified conductive AFM. The main difference between pc-AFM and other types of AFM instruments is the illumination source that is focused through the inverted microscope objective and the neutral density filter that is positioned adjacent to the illumination source.
California’s economy is regarded as fairly healthy, but in some ways it still lags the nation. Unemployment last month was 5.3%, tied for the nation’s second highest behind Nevada. The ...
Chris Roberts took the stage at a backer-only pre-PAX event in Boston last night to show off some of Star Citizen's alpha dogfighting footage. Despite a few technical glitches, fans were able to ...
Fire-ravaged Southern California faces an unprecedented “extreme fire risk” Tuesday with the return of powerful Santa Ana winds — which may reach up to 75 mph, forecasters warned.
Figure 1: Photograph of an AFM system which can be used for chemical force microscopy. In materials science, chemical force microscopy (CFM) is a variation of atomic force microscopy (AFM) which has become a versatile tool for characterization of materials surfaces.
Flames and smoke rise as the Border 2 Fire burns, in Chula Vista, California, U.S., January 24, 2025, in this screen grab obtained from a social media video. (Benjamin Chapman via REUTERS)