STEM Systems in TEM
Equip your TEM with PNDetector’s STEM System
STEM in TEM becomes more and more popular as it provides us with significant detailed material information below the atomic resolution (actually down to pm), with information in the depth of the material (atomic column structure) as well as its electrical and magnetic sub cell composition. The detectors have to be adapted for that – they must be able to provide spatially resolved information – and they have to be fast and precise. For highest resolution with 256x256 segments and scan rates up to 10 kHz we refer to our High Resolution 4D STEM Camera – for standard and high-speed applications however our silicon-based STEM detectors segmented into up to 4 rings (for BF, ADF, LAADF and HAADF) with up to 13 channels are your best partner. By the means of our excellent electronics scan speeds up to 10 MHz with low noise imaging can be achieved, and the pneumatic driven retraction mechanism allows safe and precise adjustment of the detector.
Key Features
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Taking full advantage of silicon-based STEM detectors: radiation hard, low noise, stable and precise in geometry.
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A full variety of detector geometries up to 13 channels - reaching from 1 to 4 rings comprising 1 or 4 segments plus central hole or bright field
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High collection efficiency of 90 % up to 300 keV
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Excellent amplification of all channels with high speed and low noise
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Precise and safe adjustment of the detector by the pneumatic retraction mechanism
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Module and flange to be adjusted for lower or upper positions (ports) in your TEM
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Digitizing and Scanning System available if needed
STEM Detector System for TEM comprising ADV STEM Detector with 4 up to 13 channels, Main Amplifier for all channels and Pneumatic Retractable Arm
Pneumatic Retractable Arm incl. 13 channels Advanced STEM Module
Main Amplifier MA-PN99
PNDetector´s STEM system integrated into a TEM using the pneumatic retractable arm
FIB-Lamella of Magnesium flakes with embedded SiC nanoparticles (10-200 nm)
Electrical and mechanical components of the STEM System in TEM:
| Advanced STEM Detectors | Number of channels | Retractable Positioning System | Signal Conditioning |
|---|---|---|---|
ADV-STEM-22-4-3-BF15 (bonded in rings) | 4 | Pneumatic Retractable Arm | MA-PN44 |
| ADV-STEM-22-4-3-CH05 | 12 | Pneumatic Retractable Arm | MA-PN44 combined with MA-PN99 |
| ADV-STEM-22-4-3-CH20 | 12 | Pneumatic Retractable Arm | MA-PN44 combined with MA-PN99 |
| ADV-STEM-22-4-3-BF15 | 13 | Pneumatic Retractable Arm | MA-PN44 combined with MA-PN99 |
Advanced STEM Detectors for TEM
Multichannel annular silicon based STEM detectors are equipped with multichannel preamplifier electronics in one housing.
Main Amplifier for STEM Detectors in TEM
Low noise high speed amplification is performed for 4 to 13 channels
Pneumatic Retractable Arm
Repeatable and precise positioning with the Pneumatic retractable arm
