Invention Grant
- Patent Title: Method and apparatus for sample extraction and handling
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Application No.: US14674840Application Date: 2015-03-31
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Publication No.: US09349570B2Publication Date: 2016-05-24
- Inventor: Enrique Agorio , James Edgar Hudson , Gerhard Daniel , Michael Tanguay , Jason Arjavac
- Applicant: FEI Company
- Applicant Address: US OR Hillsboro
- Assignee: FEI Company
- Current Assignee: FEI Company
- Current Assignee Address: US OR Hillsboro
- Agency: Scheinberg & Associates
- Agent Michael O. Scheinberg
- Main IPC: H01J37/20
- IPC: H01J37/20 ; G01N1/28 ; G01N1/32 ; H01J37/26 ; H01J37/28 ; H01J37/31 ; H01J37/285 ; G01R31/28

Abstract:
An improved method and apparatus for extracting and handling samples for S/TEM analysis. Preferred embodiments of the present invention make use of a micromanipulator and a hollow microprobe probe using vacuum pressure to adhere the microprobe tip to the sample. By applying a small vacuum pressure to the lamella through the microprobe tip, the lamella can be held more securely and its placement controlled more accurately than by using electrostatic force alone. By using a probe having a beveled tip and which can also be rotated around its long axis, the extracted sample can be placed down flat on a sample holder. This allows sample placement and orientation to be precisely controlled, thus greatly increasing predictability of analysis and throughput.
Public/Granted literature
- US20150311034A1 Method and Apparatus for Sample Extraction and Handling Public/Granted day:2015-10-29
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