a new scanning electron microscope lakeview has just received a $77,000 grant to purchase a new...
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A New Scanning Electron Microscope
• Lakeview has just received a $77,000 grant to purchase a new Scanning Electron Microscope (SEM for short).
• SEM’s are used professionally to see objects on the scales that are used in nanotechnology
• An SEM scans a beam of electrons across a sample to produce an image.
• Objects can be magnified from 10x - 300,000x.
• We will be able to see objects as small as three nanometers across
A New Scanning Electron Microscope
• Each box zooms in and is 10 time smaller than the next.
• The circled box is 2 nm across. The different colored balls represent individual atoms
Just how small is a “nanometer”?
Zooming in on a snowflake – 93x
Scanning electron microscope. (2014, November 14). In Wikipedia, The Free Encyclopedia. Retrieved 14:03, December 8, 2014, http://en.wikipedia.org/w/index.php?title=Scanning_electron_microscope&oldid=633831466
Zooming in on a snowflake – 329x
Scanning electron microscope. (2014, November 14). In Wikipedia, The Free Encyclopedia. Retrieved 14:03, December 8, 2014, http://en.wikipedia.org/w/index.php?title=Scanning_electron_microscope&oldid=633831466
Zooming in on a snowflake – 908x
Scanning electron microscope. (2014, November 14). In Wikipedia, The Free Encyclopedia. Retrieved 14:03, December 8, 2014, http://en.wikipedia.org/w/index.php?title=Scanning_electron_microscope&oldid=633831466
Zooming in on a snowflake – 1,860x
Scanning electron microscope. (2014, November 14). In Wikipedia, The Free Encyclopedia. Retrieved 14:03, December 8, 2014, http://en.wikipedia.org/w/index.php?title=Scanning_electron_microscope&oldid=633831466
Zooming in on a snowflake – 3,900x
Scanning electron microscope. (2014, November 14). In Wikipedia, The Free Encyclopedia. Retrieved 14:03, December 8, 2014, http://en.wikipedia.org/w/index.php?title=Scanning_electron_microscope&oldid=633831466
Zooming in on a snowflake – 7,000
Scanning electron microscope. (2014, November 14). In Wikipedia, The Free Encyclopedia. Retrieved 14:03, December 8, 2014, http://en.wikipedia.org/w/index.php?title=Scanning_electron_microscope&oldid=633831466
Zooming in on a snowflake – 18,000x
Scanning electron microscope. (2014, November 14). In Wikipedia, The Free Encyclopedia. Retrieved 14:03, December 8, 2014, http://en.wikipedia.org/w/index.php?title=Scanning_electron_microscope&oldid=633831466
Zooming in on a snowflake – 36,000x
Scanning electron microscope. (2014, November 14). In Wikipedia, The Free Encyclopedia. Retrieved 14:03, December 8, 2014, http://en.wikipedia.org/w/index.php?title=Scanning_electron_microscope&oldid=633831466
SEM images – Butterfly head & tongue
SEM images – Spider
SEM images – Pollen granules magnified 550x
SEM images – E. coli bacteria magnified 12,000x
SEM images – Bacteriophage ~100,000xA virus that infects E. coli.
Nanotechnology
• Acquisition of this microscope is a significant milestone for Lakeview
• It will allow students to see materials on the scale used for Nanotechnology for the first time.
• In addition, uses for the instrument have already been planned for courses in Biology, Chemistry, Physics & Technology
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