Cooling and Displaying the Temperature of the High Current Electrical Feedthroughs

Cooling and Displaying the Temperature of the High Current Electrical Feedthroughs

Thermal evaporation
[vc_row][vc_column][vc_single_image image="2518" img_size="large" alignment="center" onclick="link_image"][/vc_column][/vc_row][vc_row][vc_column width="1/4"][vc_wp_posts number="10"][/vc_column][vc_column width="3/4"][vc_column_text] Cooling and Displaying the Temperature of the High Current Electrical Feedthroughs Electrical feedthroughs are tools that transmit electrical signals and currents between inside and outside of the vacuum chamber. Feedthroughs include one or more conductor pins that pass through a vacuum flange that is well sealed against air leakage. The conductive pins are electrically separated from the flange by insulation. These insulators, which are mostly made of ceramic, usually tolerate a significant difference pressure along their length. All of the vacuum coating systems fabricated by VacCoat Ltd. are also equipped with electrical feedthroughs. In DTT thermal evaporation deposition systems, the high current electrical feedthroughs are used and passed electric current more than 100A through them. Passing this high current can be caused…
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Chalcogenide Thin Films Deposition

Chalcogenide Thin Films Deposition

Pulsed Laser deposition, Sputter Coater, Thermal evaporation
[vc_row][vc_column][vc_single_image image="2506" img_size="large" alignment="center" onclick="link_image"][/vc_column][/vc_row][vc_row][vc_column width="1/4"][vc_wp_posts number="10"][/vc_column][vc_column width="3/4"][vc_column_text] Chalcogenide Thin Films Deposition Chalcogenides are materials that contain at least one of the chalcogen elements, the substances of group 16 of the periodic table(sulfur, selenium, tellurium, etc.). Chalcogenic glass has received a lot of attention due to its special optical properties, such as high refractive index, infrared(IR) transparency, nonlinear optical properties, and reversible phase change from amorphous to crystalline. Photovoltaic cells are one of the applications of chalcogenide thin films. Optical properties and other characteristics of thin films (thermal, mechanical, resistance, chemical, photo-sensitivity, etc.) are highly dependent on the deposition methods. Depending on how the thin film is deposited, the stoichiometry, structure, defect stats, and many other features can be controlled. Thermal Evaporation Thermal evaporation method is used for the deposition…
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Thickness Control of Carbon Film in Vacuum Carbon Coaters

Thickness Control of Carbon Film in Vacuum Carbon Coaters

Carbon Coater
[vc_row][vc_column][vc_single_image image="2495" img_size="large" alignment="center" onclick="link_image"][/vc_column][vc_column][vc_row_inner][vc_column_inner width="1/4"][vc_wp_posts number="10"][/vc_column_inner][vc_column_inner width="3/4"][vc_column_text] Precise Thickness Control in Vacuum Carbon Coaters Thickness Control of Carbon Film which is deposited on the samples to be analyzed by electron microscopy(SEM, TEM, FE-SEM, and etc.) or Energy-dispersive X-ray spectroscopy(EDX) is usually difficult to work. Due to the change in carbon sources(rod or fiber) resistance at high temperatures created during the evaporation, in some cases the thickness of deposited thin film is either less or more than the desired amount. Vacuum Carbon Coating Systems Also, for imaging samples with TEM, it is necessary to cover the grids used in this process with a supporting thin film of carbon, in which case the reproducibility of the carbon film thickness and also the quality of the deposited thin film play an important…
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Learn more about Turbomolecular Pumps

Learn more about Turbomolecular Pumps

Uncategorized
[vc_row][vc_column][vc_single_image image="2441" img_size="large" alignment="center" onclick="link_image"][/vc_column][vc_column width="1/4"][vc_wp_posts number="10"][/vc_column][vc_column width="3/4"][vc_column_text] Learn more about Turbomolecular Pumps One of the most commonly used pumps for high vacuum pressure is the turbomolecular pump. These pumps are easy to use and require less care and maintenance than diffusion pumps. The small foot print, the lack of need to cool with water, the speed to reach the desired vacuum, the high purity of these pumps are other advantages compared to diffusion pumps. Using these pumps, the pumping speed can be constant with a good accuracy(One of the disadvantages of these pumps is their high price). Turbomolecular pumps can be used in the range of rough vacuum, high vacuum and ultra-high vacuum(UHV) with a constant pumping speed of up to 4000 liters per second. Turbomolecular pumps are kinetic…
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What is the Glad Sputtering Technique?

What is the Glad Sputtering Technique?

Sputter Coater
[vc_row][vc_column][vc_single_image image="2421" img_size="large" alignment="center" onclick="link_image"][/vc_column][vc_column width="1/4"][vc_wp_posts number="10"][/vc_column][vc_column width="3/4"][vc_column_text] What is the Glad Sputtering Technique? There are various techniques for increasing the quality of thin films deposited by vacuum coating methods. Glad sputtering is one of the most widely used techniques in the sputtering deposition process to achieve different structural architectures. Angling of the rotating sample holder relative to the cathode during the sputtering deposition process is a technique which called Glad Sputtering in the thin film industry. By changing the angle of the substrate relative to the cathode and also changing the parameters such as the rotational speed of the sample holder, vacuum chamber pressure, temperature, and etc., thin films with complex geometry can be deposited. The structure of deposited thin films could be in different geometries such as spiral,…
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Deposition of the Highly Reactive Materials

Deposition of the Highly Reactive Materials

Thermal evaporation
[vc_row][vc_column][vc_single_image image="2411" img_size="large" alignment="center" onclick="link_image"][/vc_column][vc_column width="1/4"][vc_wp_posts number="10"][/vc_column][vc_column width="3/4"][vc_column_text] Deposition of the highly reactive materials There are materials with a high affinity to oxygen among the materials which are deposited by the vacuum coating systems. If these substances are in the vicinity of a small amount of oxygen, they react quickly and burn completely. Lithium is easily oxidized when exposed to air. On the other hand, this alkali metal and its compounds have many applications in the industry. For example, this metal is used to produce rechargeable batteries that are used in smartphones, tablets, etc. The best way to lithium deposition is the thermal evaporation method. Lithium Deposition In the deposition of this metal with sputtering or electron gun methods, due to its low melting point, it is very difficult to…
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Thin film deposition by thermal evaporation method

Thin film deposition by thermal evaporation method

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
Thermal evaporation is one of the most popular among the deposition methods. Simplicity of operation and proper speed are the notable strengths of this deposition method. Thermal evaporation is one of the Physical Vapor Deposition (PVD) methods during which a thin film is deposited on the substrate during a physical process.   Thermal deposition mechanism In the process of thermal evaporation, the target material is located inside an evaporation source (boat, coil, and basket) which is heated by the passage of electric current. The target material inside the evaporation source is heated to the evaporation point. Because heat generation is due to electrical resistance of the evaporation source, this method is also called resistive evaporation. After evaporation, the molecules of the target material move to the substrate and form a…
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pulse laser deposition is a physical deposition (PVD)

pulse laser deposition is a physical deposition (PVD)

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
Pulsed Laser Deposition Pulse laser deposition is a physical deposition (PVD) method. In this method, the high-power pulsed laser beam focuses on the target that is inside the vacuum chamber. The target material is vaporized by a laser beam in the form of a Plasma Plume and deposit on the substrate as a thin film. This process can be performed in a high vacuum environment or in an environment with background gases such as oxygen. Oxygen is usually used for the oxide deposition to completely oxygenate the deposited thin film during the PLD process. Figure 1 shows the PLD mechanism of operation. While the equipment needed to perform the deposition in this manner is roughly similar to other deposition methods (such as spattering), the physical interaction between the laser beam…
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plasma cleaning

plasma cleaning

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
Surface Cleaning Using Plasma in a Low-Pressure Environment (vacuum) is an economical way to clean specimens uniformly and securely. Removal of contaminants from the studied substrates without affecting the overall properties of the material is one of the benefits of the plasma surface cleaning method. Plasma is widely used in the circuit industry, including cleaning the PCB board before coating and cleaning the lead frames during the packaging process. Plasma sample cleaning has significant advantages over other surface cleaning methods: Applicable to a wide range of materials (metals, plastics, glass, ceramics, etc.) Eco friendly. This method eliminates the need for hazardous chemical solvents, which saves considerable costs because it does not need to eliminate environmental hazards like other cleaning methods. The solvents leave behind the cleaning process while the plasma…
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carbon coating for EM and EDX sample preparation

carbon coating for EM and EDX sample preparation

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
carbon coating for EM and EDX sample preparation Electron microscopes and analytical methods using X-rays are powerful tools that provide valuable information at the nanoscale of various samples. Some samples need to undergo a preparation step before being analyzed. The first group of samples that need to be prepared are radiation-sensitive samples. This group of samples comprises most biological samples, but other sensitive materials, such as plastics, are also included. The second groups of samples that need to be prepared are non-conductive materials or materials with poor electrical conductivity. Due to the non-conductivity properties of these materials, their surface acts as a trap for electrons. The accumulation of electrons on the surface of these materials causes the surface to become so-called "charging". The charged portions of the surface are white…
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