Gas field ion microscopes having multiple operation modes
The disclosure relates to ion beams systems, such as gas field ion microscopes, having multiple modes of operation, as well as related methods. In some embodiments, the disclosure provides a method of operating a gas field ion microscope system that includes a gas field ion source, where the gas field ion source includes a tip including a plurality of atoms.
1. A method of operating a gas field ion microscope system comprising a gas field ion source, the gas field ion source comprising a tip including a plurality of atoms, the method comprising:
operating the gas field ion microscope system in a first mode including interacting a first ion beam with a sample, at least about 80% of the ions in the first ion beam being generated by a first number of atoms of the plurality of atoms of the tip; and
operating the gas field ion microscope system in a second mode including interacting a second ion beam with the sample, at least about 80% of the ions in the second ion beam being generated by a second number of atoms of the plurality of atoms of the tip,
wherein:
the first mode is different from the second mode, and the first number of atoms is different from the second number of atoms, and
the sample is not removed from the gas field ion microscope system between the first and second modes of operation.
2. The method of claim 1 , wherein the first ion beam has a first ion current at a surface of the sample, the second ion beam has a second ion current at the surface of the sample, and the second ion current is at least two times the first ion current.
3. The method of claim 1 , wherein the first mode comprises forming an image of the sample.
4. The method of claim 3 , wherein the second mode comprises obtaining chemical information about the sample.
5. The method of claim 1 , wherein the second mode comprises obtaining chemical information about the sample.
6. The method of claim 5 , wherein the information about the sample comprises information selected from the group consisting of an image of the sample and chemical information about the sample.
7. The method of claim 1 , wherein the first mode comprises detecting particles to provide information about the sample, and the second mode comprises performing chemistry on the sample.
8. The method of claim 1 , wherein the first mode comprises performing a first type of chemistry on the sample, and the second mode comprises performing a second type of chemistry on the sample, the second type of chemistry being different from the first type of chemistry.
9. The method of claim 8 , wherein the first type of chemistry comprises etching the sample, and the second type of chemistry comprises depositing material on the sample.
10. The method of claim 1 , wherein the first mode comprises detecting secondary electrons generated by the interaction of the first ion beam with the sample to form an image of the sample, and the second mode comprises detecting ions to determine chemical information about the sample.
11. The method of claim 1 , wherein the first number of the plurality of atoms of the tip is one atom.
12. The method of claim 11 , wherein the second number of the plurality of atoms of the tip is at least two atoms.
13. The method of claim 11 , wherein the second number of the plurality of atoms of the tip is three atoms.
14. The method of claim 1 , wherein the tip has a terminal shelf with three atoms.
15. The method of claim 1 , wherein the first mode comprises forming an image of the sample, the second mode comprises obtaining chemical information about the sample, the first number of the plurality of atoms of the tip is one atom, and the second number of the plurality of atoms of the tip is at least two atoms.
16. The method of claim 1 , wherein the first mode comprises detecting particles to provide information about the sample, the second mode comprises performing chemistry on the sample, the first number of the plurality of atoms of the tip is one atom, and the second number of the plurality of atoms of the tip is at least two atoms.
17. The method of claim 1 , wherein the first mode comprises performing a first type of chemistry on the sample, the second mode comprises performing a second type of chemistry on the sample, the second type of chemistry being different from the first type of chemistry, the first number of the plurality of atoms of the tip is one atom, and the second number of the plurality of atoms of the tip is at least two atoms.
18. The method of claim 1 , the first mode comprises detecting secondary electrons generated by the interaction of the first ion beam with the sample to form an image of the sample, the second mode comprises detecting ions to determine chemical information about the sample, the first number of the plurality of atoms of the tip is one atom, and the second number of the plurality of atoms of the tip is at least two atoms.