✨SEM and ECM use electrons to produce high-resolution images of samples
💦ECM allows imaging of wet samples without drying them out
🔬SEM can provide information about atomic number contrast in a sample
🌊ECM prevents charging by introducing water vapor
🌟SEM can image surface features in three dimensions
What is the difference between SEM and ECM?
—SEM uses electromagnetic lenses to focus electrons and provide high-resolution images of samples, while ECM allows imaging of wet samples without drying them out and prevents charging by introducing water vapor.
How does SEM provide atomic number contrast?
—SEM can provide atomic number contrast by detecting backscattered or secondary electrons that vary depending on the average atomic number of the sample's regions.
What are the benefits of using ECM?
—ECM allows imaging of wet samples in their natural state without the need for drying or conducting coatings. It also prevents charging by introducing water vapor.
Can SEM provide three-dimensional images?
—Yes, SEM can provide three-dimensional images by imaging surface features from different angles using electromagnetic lenses.
How does ECM prevent charging?
—ECM prevents charging by introducing water vapor, which allows imaging of non-conductive samples without the need for conducting coatings.
00:00Introducing Scanning Electron Microscopy (SEM) and Environmental Scanning Electron Microscopy (ECM)
03:30SEM images show surface features using backscattered and secondary electrons
06:10ECM allows imaging of wet samples without drying them out
08:30SEM can provide atomic number contrast in imaging
10:40ECM prevents charging by introducing water vapor
