Transmission electron microscopy dual tilt photothermal in-situ system

NegotiableUpdate on 02/17

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Nature of the Manufacturer: Producers

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Overview

The transmission electron microscope dual tilt photothermal in-situ system constructs a thermal and optical composite multi field automatic control and feedback measurement system in the in-situ sample stage through a MEMS chip and a light source introduced by optical fibers. Combining various modes such as EDS, EELS, SAED, HRTEM, STEM, etc., it realizes real-time and dynamic monitoring of key information such as microstructure, phase transition, elemental valence state, microscopic stress, atomic level structure and composition evolution of the sample under vacuum environment with temperature and light field changes at the nanoscale and even atomic level.

Product Details

Our Advantages

Optical Solutions

1. Integrated laser light source, integrating different bands of ultraviolet visible infrared and outputting specific wavelength laser with strong optical signal（The maximum intensity shall not be less than 150 mW）Can quickly and continuously adjust the intensity of the light source, with short response time(Millisecond level).

2. Special structural design, ultra-low optical loss, stable and uniform energy.

Excellent thermal performance

1. High precision infrared temperature measurement and calibration, micrometer level high-resolution thermal field measurement and calibration to ensure temperature accuracy.

2. The ultra-high frequency temperature control method with two electrodes eliminates the influence of wires and contact resistance, resulting in more accurate measurement of temperature and electrical parameters.

3. High stability precious metal heating wire (non ceramic material) is used, which is both a thermal conductive material and a thermal sensitive material. Its resistance has a good linear relationship with temperature. The heating zone covers the entire observation area, and the heating and cooling rates are fast. The thermal field is stable and uniform, and the temperature fluctuation in a stable state is ≤± 0.01 ℃.

4. Adopting a closed-loop high-frequency dynamic control and feedback environmental temperature control method, high-frequency feedback control eliminates errors, and the temperature control accuracy is ± 0.01 ℃.

5. Multi level composite heating MEMS chip design, controlling thermal diffusion during heating process, greatly suppressing thermal drift during heating process, ensuring efficient observation of experiments.

6. The heating wire is coated with silicon nitride on the outside, which does not react with the sample, ensuring the accuracy of the experiment.

Intelligent software and automation equipment

1. Human machine separation, software remote adjustment of laser band and intensity, program automation control of tilt angle.

2. Customize the program's heating curve. It is possible to define a heating program with more than 10 steps and a constant temperature time. At the same time, the target temperature and time can be manually controlled. If temperature and constant temperature are required during the heating process, the experimental plan can be adjusted immediately to improve experimental efficiency.

3. Built in absolute temperature calibration program, each chip can re fit and calibrate the curve according to the change in resistance value during temperature control, ensuring the accuracy of temperature measurement and the reproducibility and reliability of high-temperature experiments.

4. The entire process is equipped with precision automation equipment to assist manual operation and improve experimental efficiency.

Technical Specifications

category	project	parameter
Basic Parameters	Rod material	High strength titanium alloy
	Number of electrodes	2
	Window film thickness	No film or 20nm
	Drift rate	＜ 0.5 nm/min (steady state)
	Tilt angle	α ≥ ± 25 °, β ≥ ± 25 ° (actual range depends on the pole shoe model)
	Applicable electron microscope	ThermoFisher/FEI, JEOL, Hitachi
	Suitable for extreme boots	ST, XT, T, BioT, HRP, HTP, CRP
	(HR)TEM/STEM	support
	(HR)EDS/EELS/SAED	Support heating process and high temperature detection

Application Cases

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1300 ° C constant temperature, metal alloy diffusion, good chip temperature stability, low drift rate

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Research on the Carbonization of MOF Materials during the Temperature Variation Process from Room Temperature to 1000 ° C

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Surface structural changes of ceria nanoparticles under high temperature and light conditions at 800 ℃