9 Questions
What is the main purpose of Focused Ion Beam (FIB) technique?
To analyze, deposit, and ablate materials at specific sites
How does a Scanning Electron Microscope (SEM) differ from Focused Ion Beam (FIB)?
SEM uses a focused beam of ions, while FIB uses a focused beam of electrons
Which industry or field extensively utilizes Focused Ion Beam (FIB) technique?
Materials science
What happens when the gallium wets the tungsten and flows to the tip of the needle?
Gallium atoms are ionized and experience field emission
What is the purpose of the gallium ion source in Ion Beam Source Instruments?
To accelerate the gallium atoms to 1-50keV
How are the gallium ions focused onto the sample in Ion Beam Source Instruments?
By using an electrostatic lense
What is the purpose of the gallium ion source in Ion Beam Source Instruments?
To generate a high electric field for ionization and field emission
What effect does the huge electric field at the small tip of the gallium ion source have?
Causes ionization and field emission of the gallium atoms
What happens when the heated gallium wets the tungsten and flows to the tip of the needle?
The opposing forces of surface tension and electric field form the gallium into a cusp shaped tip called a Taylor cone
Test your knowledge about the FIB technique, used in the semiconductor industry, materials science, and biology for material analysis, deposition, and ablation. Understand how it differs from a scanning electron microscope (SEM) and its practical applications.
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