scanning electron microscope
Previous photo: leaf magnified to 5.28 mm
emily ganser
Macro photogaphy & design by
SEM...
stands for scanning electron microscope. It is a microscope that uses electrons instead of light to form an image. Since their development in the early 1950’s, scanning electron microscopes have developed new areas of study in the medical and physical science communities. The SEM has allowed researchers to examine a much bigger variety of specimens. The scanning electron microscope has many advantages over traditional microscopes. The SEM has a large depth of field, which allows more of a specimen to be in focus at one time. The SEM also has much higher resolution, so closely spaced specimens can be magnified at much higher levels. Because the SEM uses electromagnets rather than lenses, the researcher has much more control in the degree of magnification. All of these advantages, as well as the actual strikingly clear images, make the scanning electron microscope one of the most useful instruments in research today.
Definition Credit to Perdue University
Temple University is fortunate enough to house These hi-Tech Microscopes that engineering majors have access for assignments as well as their own research.
“CoENIC is housing one of the most comprehensive Scanning Electron Microscopes (FEI Quanta 450FEG SEM) equipped with the latest Energy Dispersive Spectrometer (Oxford Aztec Energy Advanced EDS System). These Nanotechnology tools address the need to investigate a wide variety of materials and characterize structure and composition (Temple University Engineering ).” all of the microscopic photographs were taken courtesy of Temple University’s Scanning electron microscopes within the Engineering facilities.
leaf
18.4 mm
almonds
1.38
mm
toothpaste
166
uM
dime
3.19
mm