Climate's in-situ solutions offer state-of-the-art control of the gas environment and, using mass spectrometry, allow for excellent determination of the material's constitutive relationship
Dynamic mixing valves give the bars the ability to change gas composition and flow rate at any time, and the lmpulse software allows for the widest range of independent control of gas composition, pressure, and flow rate. four-probe heating provides the most accurate temperature control.
Temperature stability of 0.005°C is maintained even during gas flow.
1. Predefine the experimental conditions :Define your optimal experimental conditions before using the TEM by attaining ex situ mass spectrometry data with Climate.
2. High stability:Achieve atomic resolution in TEM and STEM in static and fl ow modes.
3. Optimized analytical capabilities:The optimized design enables EELS and large solid_x0002_angle EDS collection.
1. Dynamic mixing：Our patented mixing valve enables you to change the gas composition on the fly.
2. Fast switching：Alter the gas environment within seconds.
3. Independent control：Independently control gas composition, pressure and flow rate with a wide experimental range.
Modular sample holder allow each component to be cleaned or replaced before a new experiment thus avoiding cross-contamination and ensuring controlled and designed experiments.
With a window thickness of only 60nm, it has the best performance acquisition for TEM and STEM mapping, while the optimized design allows for good collection of EELS and stereo angle EDS information.
Wide experimental range and patented dynamic mixing valve for independent control of pressure, flow and composition. While safely adding water vapor to any gas mixture before it enters the sample holder.
Directly deposit your sample onto the Nano-Reactor
Loading the sample onto the MEMS based sample carrier called the Nano-Reactor, is easy and fast to perform. Catalyst nanoparticles are typically in powder form and are prepared in an ethanol solution for direct drop casting onto the Nano-Reactor’s electron transparent windows.
Two key innovations allow the Nano-Reactor to optimize EDS data collection: (1) By removing material around the electronically transparent window in the chip on the EDS, a larger collection angle for X-ray detection can be achieved. Tilting the holder 20-30° in the a direction increases the EDS count rate significantly. (2) The thin film in the center of the EDS on-chip improves the signal-to-noise ratio, resulting in higher resolution images and elemental distribution maps.
The unique construction of the Nano-Reactor can withstand pressures up to 2 bar. In combination with the gas supply system, the impulse software allows the user to quickly switch between different gases and programmed experimental processes.
The Nano-Reactor chip's miniature heater is based on the proven and advanced DENSsolutions MEMS technology, which provides superior performance in terms of temperature accuracy, reliability and stability. The miniature heaters are encapsulated in inert SiNx to ensure that the heater metal does not interact with gases or samples. The four-probe method monitors and quickly adjusts the temperature based on user input values and gas interactions, ensuring stable and controlled sample temperatures.
Another feature of the four-probe miniature heater is the ability to accurately monitor heat uptake and heat consumption during internal adsorption and exothermic reactions. Both the resistance and power consumption of the microheater are displayed in real time at ultra-high resolution, allowing critical changes in sample dynamics to be identified. This data can be indicative of catalyst activity, thus providing robust conformational relationships.
ClimateModular design for stability and reliability
 Ultra Vacuum Performance
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 Mechanical Stability
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 Exchangeable Tubing & Tip
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The in situ TEM Sample Holder provides the platform for connecting the Gas Supply System to the sealed Nano-Reactor inside the vacuum of the TEM. The modular design allows for each vacuum component to be either cleaned or replaced which ensures each new experiment is free from cross-contamination. The highest precision fabrication techniques were used to machine the in situ TEM Sample Holder to perfectly fit the microscopes goniometer.
利用 Climate 气体供应系统实现对真实状态下催化剂反应条件的实时控制。
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Dynamic mixing of up to three gases -
Patented mixing valve -
Ultra Fast Flow Control Unit
The DENSsolutions Vaporizer is designed to offer you unprecedented experimental freedom in your in situ experiments. With the Vaporizer, you can independently add water vapor to any gas mixture right before it enters the holder, allowing you to work with and even humidify 3 different types of gases at once.
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Independently control gas parameters -
Start a new experiment in minutes -
Safely work with explosive mixtures
The Gas Analyzer is designed to work seamlessly with the in-situ Climate gas-phase heated sample bars. The analysis of reaction products transforms the Climate system into the only platform on the market capable of combining TEM-based data with information about the kinetics of the reaction being tested.
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Gas Composition Measurement and Analysis
| 产品规格参数 | Climate Air | Climate GVB | Climate G+ |
| Heating control mode | 4-point probe resistive feedback | 4-point probe resistive feedback | 4-point probe resistive feedback |
| Heating range | RT - 1,000 °C | RT - 1,000 °C | RT - 1,000 °C |
| Heating & cooling rate | Up to 150 °C/sec | Up to 150 °C/sec | Up to 150 °C/sec |
| Temperature stability | ≤ ± 0.01 °C | ≤ ± 0.01 °C | ≤ ± 0.01 °C |
| Pressure range | Ambient | 0 - 2,000 mbar | 0 - 2,000 mbar |
| Resolution* | ≤ 100 pm | ≤ 100 pm | ≤ 100 pm |
| Drift rate* | ≤ 0.5 nm/min | ≤ 0.5 nm/min | ≤ 0.5 nm/min |
| Modular holder design | Yes | Yes | Yes |
| On-chip ffow channel | Yes | Yes | Yes |
| Mass Spectrometer | 0 - 200 AMU | 0 - 200 AMU | 0 - 200 AMU |
| Gas mixing method | N/A | Discrete | Continuous |
| Mixing ffammable mixtures | N/A | No | Yes |
| Gas switching | N/A | 10 min | ≤ 15 sec |
| Gas input lines | N/A | 3 | 3 |
| Gas ffow range (normalised) | Static | 0, 0.01-1 ml/min | 0, 0.01-1 ml/min |
| Vapor compatibility | N/A | Yes | Yes |
| Micro-calorimetry | Yes | Yes | Yes |
| EDS compatibility** | Yes | Yes | Yes |
| EELS compatibility | Yes | Yes | Yes |
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Green energy materials -
Corrosion of metals & alloys -
Materials synthesis and growth -
Heterogeneous catalysis
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“The DENSsolutions Climate System allows us to reveal the so-far unseen: Looking at not only how the gas-phase is changed in the presence of a catalyst, but also studying how the interaction between gas-phase and catalyst leads to the emergence of catalytic function. Direct real-space observation is essential for our understanding of working catalysts and the development of new processes that are urgently needed in view of climate change and limited natural resources.”
Prof. Dr. Wei Liu Professor | Dalian Institute of Chemical Physics, CAS -
The DENSsolutions Climate System allows us to reveal the so-far unseen: Looking at not only how the gas-phase is changed in the presence of a catalyst, but also studying how the interaction between gas-phase and catalyst leads to the emergence of catalytic function. Direct real-space observation is essential for our understanding of working catalysts and the development of new processes that are urgently needed in view of climate change and limited natural resources.”
Prof. Dr. Marc-Georg Willinger Professor | Technical University of Munich -
The DENSsolutions Climate system allowed us to directly evaluate the reducibility of Fischer-Tropsch catalysts under industrially relevant temperatures. Such observations provide a unique insight into the evolution of catalysts under activation conditions.
Dr. Ofentse Makgae Post-doctoral Research Fellow | Lund University
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“The DENSsolutions Climate System allows us to reveal the so-far unseen: Looking at not only how the gas-phase is changed in the presence of a catalyst, but also studying how the interaction between gas-phase and catalyst leads to the emergence of catalytic function. Direct real-space observation is essential for our understanding of working catalysts and the development of new processes that are urgently needed in view of climate change and limited natural resources.”
Prof. Dr. Wei Liu Professor | Dalian Institute of Chemical Physics, CAS -
The DENSsolutions Climate System allows us to reveal the so-far unseen: Looking at not only how the gas-phase is changed in the presence of a catalyst, but also studying how the interaction between gas-phase and catalyst leads to the emergence of catalytic function. Direct real-space observation is essential for our understanding of working catalysts and the development of new processes that are urgently needed in view of climate change and limited natural resources.”
Prof. Dr. Marc-Georg Willinger Professor | Technical University of Munich -
The DENSsolutions Climate system allowed us to directly evaluate the reducibility of Fischer-Tropsch catalysts under industrially relevant temperatures. Such observations provide a unique insight into the evolution of catalysts under activation conditions.
Dr. Ofentse Makgae Post-doctoral Research Fellow | Lund University
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