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BIOLOGY 210 - Scanning Electron Microscopy

[Go to semester: Fall 2002, Fall 2003, Spring 2005, Spring 2006]

The scanning electron microscope (SEM) is used to teach principles of electron optics and digital imaging for the study of surface morphology and microstructure of materials. The following micrographs were captured by students in BIOL 210.

(below, left) A single Lilium pollen grain. (Katie Rodgers '07)
(below, right) The same sample at a higher magnification. (Gregory Gavelis '08)

(below, left) The overlapping scales of the epidermis of a guppy. (Jocelyn Baker '06)
(below, right) At a higher magnification, individual epidermal cells are visible. (Gregory Gavelis '08)

(below) A series of images examining the composition of paper at increasing magnifications. (Jocelyn Baker '06, Matthew Tougas '08, Robert Hill '07)

(below, left) The antennae, head and thorax of an aphid. (Robert Hill '07)
(below, right) A view of the antenna and compound eye of an aphid. (Katie Rodgers '07)

(below, left) A solder ball on an integrated circuit chip. The solder ball provides contact between the circuit board itself and the chip package. (Gregory Gavelis '08)
(below, right) Another view of the IC chip. (Matthew Tougas '08)

(below, left) Murine liver. Visible are highly geometric hepatocytes separated by small channels called bile canaliculi. (Jocelyn Baker '06)
(below, right) A single hepatocyte and threadlike contaminant. (Gregory Gavelis '08)

(below) Mounting material supporting a tungsten filament. (Matthew Tougas '08)