*Note: This page was translated by AI from the Japanese original. In case of any discrepancy, the Japanese version shall prevail.*
Overview
JEOL specimen heating holders come in two variants: the single-axis-tilt EM-SHH(4) and the dual-axis-tilt EM-SHTH. Both are used together with a common Heater Control Unit EM-SHU2 on the JEM-2000EXII transmission electron microscope (side-entry goniometer). They allow a specimen to be heated and tilted simultaneously, and are used for in-situ TEM observation of temperature-dependent dynamic processes such as phase transformation, precipitation, and grain growth.
At our facility, the dual-axis EM-SHTH is used routinely (maximum heating temperature approximately 800°C). When the single-axis EM-SHH(4) is used, please operate it exactly as described in the manual below (the manual’s rated maximum heating temperature is room temperature to 1,000°C).
Features
- Simultaneous Heating and Tilting: Combined with the side-entry goniometer, the holder enables TEM observation of a specimen while it is heated and tilted.
- One Common Controller for Both Holders: The Heater Control Unit EM-SHU2 includes temperature conversion curves for both the EM-SHH(4) and EM-SHTH thermocouples, so a single unit can control the heating current and measure the temperature for either holder.
- Routine Use of the Dual-Axis EM-SHTH: Offers greater tilt freedom for more flexible crystal-orientation setup. Maximum heating temperature is approximately 800°C.
- Specimen Exchange with Dedicated Tools: Grid/mesh specimens are loaded into and removed from the specimen holder tip using the dedicated specimen exchange stands and tools (A/B).
Facility-Specific Notes (Holder Types and Temperature Conversion)
[Temperature Conversion] The Heater Control Unit EM-SHU2 supports both holders, and its temperature conversion chart includes two curves: one for EM-SHH (Pt–Pt·Rh(13%) thermocouple, room temperature to roughly 1,050°C) and one for EM-SHTH (W·Re(5%)–W·Re(26%) thermocouple, room temperature to roughly 800°C). For the dual-axis EM-SHTH used routinely, use the EM-SHTH conversion curve (maximum heating temperature approximately 800°C, consistent with the JEM-2000EXII introduction page).
For how to identify which holder is in use, and for more detailed handling instructions, please contact the staff (equipment manager).
Specifications
Actual equipment configurations or specifications may differ from standard manual specifications (see “Facility-Specific Notes” above). Please consult the staff (equipment manager) for details regarding current capabilities and conditions of use.
| Manufacturer | JEOL Ltd. |
|---|---|
| Model | Specimen Heating Holder EM-SHH(4) (single-axis tilt) / EM-SHTH (dual-axis tilt, used routinely), with common Heater Control Unit EM-SHU2 |
| Compatible Microscope | JEM-2000EXII (side-entry goniometer) |
| Heating Temperature | EM-SHTH (dual-axis, routine use): room temperature to approx. 800°C / EM-SHH(4) (single-axis): room temperature to 1,000°C (both are manual-specified approximate values) |
| Maximum Heating Current | 1.2 A (per the EM-SHH(4) manual) |
| Specimen Tilt | EM-SHTH: dual-axis tilt (routine use) / EM-SHH(4): single-axis tilt, ±45° |
| Specimen Tilt Speed | 9–90°/min (per the EM-SHH(4) manual) |
| Number of Specimens | 1 (grid/mesh, dedicated to the heating holder) |
| Field of View | 1.4–2.0 mmφ |
| EM-SHU2 Input | DC 24V, 4A (switching-regulator type power supplies cannot be used) |
| EM-SHU2 Output | 0–20 V, 0–2 A |
| Temperature Measurement | Direct-reading of thermocouple thermoelectromotive force (using separate EM-SHH and EM-SHTH conversion curves as appropriate) |
| Funding Source / Origin | Transferred from the former Million-Volt Electron Microscope Laboratory (now TCEM) |
| Location | 1-105 |
Manual / Usage Information
[Manual (Internal Use Only)]
📄 Specimen Heating Holder EM-SHH4 / Heater Control Unit EM-SHU2 Instruction Manual (PDF, internal use only)
*This manual covers the single-axis EM-SHH4 and the Heater Control Unit EM-SHU2. The EM-SHU2 is also used in common with the dual-axis EM-SHTH, and its temperature conversion chart at the end also includes the EM-SHTH curve. For detailed handling of the dual-axis holder used routinely, please contact the staff (equipment manager).