Oct. 10, 2013
The macro- and microstructure of iron meteorites provide valuable insights into both the inner structure of our planet and the history of our solar system. High speed collision events in the asteroid belt send the meteorites careening toward Earth. The collisions produce unique deformation microstructures. With cooling rates on the scale of a few degrees per million years, iron meteorites can consist of crystal sizes on the order of meters prior to the collision events. These extremely slow cooling rates result in phase transformations occurring at conditions near thermodynamic equilibrium. Preserving meteorite fragments is important for future studies of phase transformations, material behavior at high strain rates, and the origin of the universe.
moreSep. 24, 2013
Carl Zeiss Microscopy has introduced its crossbeam series Gemini I VP (variable pressure) and Gemini II for fast materials processing and high resolution imaging.
moreAug. 30, 2013
The scientific community and with it, every researcher, should be committed to sharing the aesthetics of the microworld, with as many people as possible. In the past it was mostly still shots of the specimen that were available. We thought it would be worth it to bring movement, color and lighting effects into the microworld and so developed a modular software called "nanoflight.creator"  with the goal of taking control of parameters like specimen movement, detector values, focus and colors of each detector channel in the Scanning Electron Microscope (SEM).
moreMay. 06, 2013
In science, many of the most interesting events occur at a scale far smaller than the unaided human eye can see. Medical researchers might realize a range of breakthroughs if they could look deep inside living biological cells, but existing methods for imaging either lack the desired sensitivity and resolution or require conditions that lead to cell death, such as cryogenic temperatures. Recently, however, a team of Harvard University-led researchers working on DARPA's Quantum-Assisted Sensing and Readout (QuASAR) program demonstrated imaging of magnetic structures inside of living cells. Using equipment operated at room temperature and pressure, the team was able to display detail down to 400 nanometers, which is roughly the size of two measles viruses.
moreApr. 22, 2013
XEI Scientific Inc. has reported that the University College London (UCL) is using an Evactron plasma technology for cleaning their scanning electron microscopy chamber.
moreMar. 19, 2013
Since the inception of the scanning electron microscope (SEM), users have encountered the persistent problem of contamination. Cleanliness is required for imaging and to make good quality measurements, and Physical Measurement Laboratory (PML) has led the exploration and the development of methods to allow SEM users gather high-quality, repeatable, and quantitative measurement results.
moreFeb. 25, 2013
Studying biological samples with scanning electron microscopy has specific requirements for their preparation. Sample drying is a particularly critical operation for objects such as cultured cells. The requirement for damaging drying step can be eliminated using environmental scanning electron microscopy. This study compares dried and wet samples of cultured human embryonic stem cells. It points to the advantages of both methods and to the complementarity of the information that they provide.
moreDec. 20, 2012
Potential candidates of reference nano-materials are manufactured and systematically characterized in particular with respect to their morphology (shape, size and size distribution) in the frame of the running large European project NanoValid. By exploiting the transmission operation mode in a SEM, known as T-SEM, it is demonstrated by means of three representative examples of nanoparticles how a quick morphological inspection up to a complete, metrological characterization is feasible.
moreOct. 22, 2012
Focused ion beam (FIB) systems using heavy ions such as Ga are widely used for machining at the 10 - 100 nm level. In order to be able to perform this function precisely it is necessary to have an accurate estimate of the beam size. The commonly used method to measure FIB size is the rise distance method, well known in scanning electron microscopy (SEM), but this is subject to a number of errors that can result in an estimate that is optimistic relative to the true beam size.
moreOct. 17, 2012
Digital Surf has announced that its Mountains 7 software is now compatible with scanning electron microscopes (SEM's) and multi-spectral (Raman) instruments and also brings numerous new features and enhancements for all other supported instrument families.
Mountains 7 SEM software can be used to reconstruct 3D surfaces from pairs or quadruplets of SEM images, and Mountains 7 multi-spectral Raman software can be used to visualize and analyze Raman spectra and hyperspectral cubes.