Helium leak detectors

Helium leak detectors

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
Helium Leak Detector, also known as Mass Spectrometer Leak Detector (MSLD), is used to find the location and measure the leakage rate of a system. A helium mass spectrometer is an instrument commonly used to detect and locate small leaks. It was initially developed in the Manhattan Project during World War II to find extremely small leaks in the gas diffusion process of uranium enrichment plants. Helium gas is the most suitable choice for leak detection. It is non-toxic, inert, non-flammable, and also scarce in the air around us, with a concentration of about 5 ppm. Because of its small atomic size, helium gas can easily pass through leakage pores. The only molecule which is smaller than helium is hydrogen, which is not an inert gas. Helium is also relatively inexpensive and is available in cylinders of…
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Ultra-High Vacuum Systems

Ultra-High Vacuum Systems

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
Since vacuum means no material, what is actually measured as vacuum, is the residual gas pressure in the chamber.   Three different units of expression are usually used to express the pressure: Pascal (Pa), Torr, and mbar. Vacuum quality is also usually classified into three categories: Rough Vacuum, High Vacuum and Ultra-High Vacuum. Ultra-High Vacuum (UHV) is called pressure range less than 10-7 Pascal or 10-9 Torr. Classification of different vacuum levels When an ionic or electron beam collides with particles (residual gas inside the chamber), it may deviate from its path, divide or even react with that particle. As a result, the presence of unwanted particles in the system will reduce its efficiency. Mean Free Path (MFP) is the average distance traveled by a gas molecule before colliding with another…
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Gettering Pumps

Gettering Pumps

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
There has also been a Gettering mechanism, which has been a pumping method, since vacuum technology came into being. Historically, the first use of this method was in the early stages of making electron tubes. The basis of the Gettering method is the absorption of some gases by some materials which results in their removal from the environment. Getter pumps fall into the general category of Capture pumps, along with cryopumps and sputter-ion pumps. The Gettering process can be divided into physical and chemical categories. Physical Getters are often found in cryostats and Dewars. In these systems, a zeolite material such as a molecular sieve is used to physically absorb and hold water vapor. If, as is often the case, the molecular sieve is placed against a surface at liquid…
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Deposition thin films of Organic Materials by Thermal Evaporation for Electro-Optical Applications

Deposition thin films of Organic Materials by Thermal Evaporation for Electro-Optical Applications

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
Electronic components based on thin-film organic semiconductors have many applications because of their flexibility and large-scale fabrication at low cost. These semiconductors allow the creation of electronic devices such as OFET (Organic-Field Effect Transistor), OLED (Organic-Light Emitting Diode) and OPV (Organic Photovoltaic Cell) as a new generation of electronics. The electronic properties of the organic molecules depend on the bonds between the atoms. The location and properties of these interatomic bonds determine how light is absorbed and the charge transferred by molecules. The most important of these bonds are the conjugated bonds and how they are joined inside the molecules, where the shared electrons are able to move part of the molecule. Figure 1: Molecular structure of polyethylene and polyacetylene In non-conductive molecules such as polyethylene (shown in Figure 1),…
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Forecasting Turnover in the Field of Vacuum Layer Systems

Forecasting Turnover in the Field of Vacuum Layer Systems

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
Studying Global Vacuum Layer Market Report Improves Business Decision Making. The global vacuum deposition system marketplace provides a wide range of opportunities for global manufacturers, service providers and users of the products. This report provides comprehensive and relevant information on the key players in the major global market share in terms of revenue, sales, supply, demand and quality of the vacuum coatings field products and services. The main market leaders are: Applied Materials, Buhler, Oerlikon, Von Ardenne, Shincron, ULVAC, KDF, Denton Vacuum, Veeco Instruments, IHI, CVD Equipment Corporation, BOBST, Mustang Vacuum Systems, Semicore. In the coming years, there is a growing demand for vacuum layer systems in North America and Europe. The costs of industrial squares, fierce competition, the introduction of new products, the rising costs of public industry, the…
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Pulsed DC Magnetron Sputtering

Pulsed DC Magnetron Sputtering

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
In the DC sputtering process by accelerating positive ions towards the target material (which is in negative potential) and colliding with its surface, due to the lack of electrical conductivity of the surface to move the charge, the positive charge accumulates on the surface of the target material. Due to this phenomenon, the tendency of the positive ions to move towards the target material is reduced and the sputtering process does not function properly. In the DC sputtering process of the dielectric material, the inner wall of the vacuum chamber is also coated with non-conductive material and traps the electric charge. This phenomenon, called the disappearing anode, causes the electrical charges from inclined toward this nonconductive layer. Due to this phenomenon, mini and macro arcs are created during the deposition…
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Vaccoat Products introduction on Nano Industry Magazine

Vaccoat Products introduction on Nano Industry Magazine

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
In this magazine, We could know about DTT- a desktop, a turbomolecular-pumped thermal evaporator for vacuum deposition of thin films, Our supplier on Russia and capability of the Vaccoat Products. Also about our other products such as DSR1 (Desk SEM sputter coater) that is a compact coating system able to coat carbon film and noble metals such as gold (Au), palladium (Pd), platinum (Pt) and gold/palladium (Au/Pd) on non-conductive or poorly conductive specimens, or DCR that is a compact carbon fiber coating system suitable for sample preparation for the use in a scanning electron microscope (SEM), Transmission electron microscope (TEM) and X-Ray analysis (EDX). You can see the bottom, a screenshot of nano industry magazine (http://www.nanoindustry.su/page/nano_en?lang=en) with our DTT.
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HOW DOES QUARTZ CRYSTAL WORK?

HOW DOES QUARTZ CRYSTAL WORK?

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
Solid materials whose atoms or molecules are regularly and repeatedly called crystals (the structure of these cells has a unit cell). Piezoelectric materials are electrically neutral and although the structures of the atoms of these materials are not symmetric, they neutralize each other in terms of electric charge. When a mechanical force is drawn into the piezoelectric material, the distance between the atoms is changed, and they move away from each other or together. As a result, the balance of electrical charges is mixed up and a net positive or negative charge is generated. On the other hand, when an electric current is given to the crystal it starts to oscillate. The frequency of the oscillation is depending on the shape, mass, thickness, and applied flow to the crystal. Deposition…
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Enhancement of the CoSb3 thin film thermoelectric properties

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
Thermoelectric (TE) device can directly convert heat to electricity, and vice versa. TE device can work as a solid-state heat pump. Thus can drive to direct conversion of waste heat from for example automobile exhausts to electricity. CoSb3 has been considered as one of the most promising thermoelectric materials in the intermediate temperature range (450-750 ˚K). It’s a semiconductor with narrow band gap and large carrier mobility. Ag doped CoSb3 thin film was investigated by Fan et al. The thin film was grown directly by the effective magnetron sputtering process. Both the electrical conductivity and Seebeck coefficient are greatly enhanced after Ag doping, resulting in the enhancement of power factor. For more information see below:
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