Environmental scanning electron microscope
Oct. 11, 2011
Great progress in the filtration performance of microfiltration membranes has been achieved in the past few years. As a consequence the structures of the respective membranes have become more and more intricate. New microscopic characterization methods are therefore necessary to reveal the membrane structure in full detail. The environmental scanning electron microscope (ESEM) has the potential for also studying microfiltration membranes in their wet state. The dynamics of the wetting and drying of the membrane surface can be imaged at sub-µm resolution.
moreMay. 26, 2011
Historically, electron microscopy of dynamic biological processes has been impossible to achieve in real time because conventional electron microscopy requires specimen fixation, dehydration and metallic coating. The advent of the Environmental Scanning Electron Microscope (ESEM) removed these restrictions, allowing fully hydrated samples to be imaged in their native state. This raises the possibility of secondary electron imaging of dynamic biological processes.
Well Suited to Biological Imaging
moreNov. 01, 2009
Imaging of soft matter, including polymeric and biological materials, has always been one of the big challenges in electron microscopy, due to the electrically insulating properties and radiation/vacuum-sensitive nature of such specimens. We briefly highlight recent advances that enable high-resolution characterization of soft nano-materials, in the native state, using scanning electron microscopy (SEM) and environmental SEM (ESEM).
moreMar. 01, 2005
Fracture Behaviour of Polymers - In situ Investigations in the ESEM. A tensile stage mounted in an ESEM allows the simultaneous recording of the stress–strain curves and the progress of crack propagation. Thus the global macroscopic values can be correlated with the evolution of features at the crack tip, strongly influenced by the microscopic structure of the material.