elina, Author at VacCoat

08Sep 2020 by elina

Pyrolytic Graphite

[vc_row][vc_column][vc_single_image image="2713" img_size="full" alignment="center" onclick="link_image"][/vc_column][/vc_row][vc_row][vc_column width="1/4"][vc_wp_posts number="10"][vc_tta_accordion style="modern" color="mulled-wine" c_align="center" autoplay="5" active_section="1" css_animation="fadeIn"][vc_tta_section title="Magnetron Sputtering" tab_id="1599634926214-a87b084b-9687"][vc_single_image image="1228" img_size="medium" alignment="center" style="vc_box_shadow_3d" onclick="custom_link" img_link_target="_blank" link="https://vaccoat.com/blog/un-balanced-magnetron-sputtering/"][/vc_tta_section][vc_tta_section title="Glad Sputtering" tab_id="1599634926299-bc5ce079-e5e6"][vc_single_image image="2421" img_size="medium" alignment="center" style="vc_box_shadow_3d" onclick="custom_link" img_link_target="_blank" link="https://vaccoat.com/blog/what-is-the-glad-sputtering-technique/"][/vc_tta_section][vc_tta_section title="Pulsed DC Magnetron Sputtering" tab_id="1599646678678-96eb02fb-dc5c"][vc_single_image image="1471" img_size="medium" alignment="center" style="vc_box_shadow_3d" onclick="custom_link" img_link_target="_blank" link="https://vaccoat.com/blog/pulsed-dc-magnetron-sputtering/"][/vc_tta_section][/vc_tta_accordion][/vc_column][vc_column width="3/4"][vc_column_text] Pyrolytic Graphite Pyrolytic graphite is a polycrystalline form of graphite that is deposited from the vapor phase by thermal decomposition of a simple hydrocarbon such as methane. Pyrolytic graphite is a man-made material similar to graphite, except that there are covalent bonds between its graphene layers. Graphite has a layered structure, and each carbon atom in each layer is bonded to three adjacent atoms. The atomic structure of graphite is a two-dimensional lattice of hexagons whose first and third layers exactly match each other,…

19Aug 2020 by elina

Visit VacCoat Ltd. at China International Import Expo(CIIE) 2020

News, Vacuum Coating System

[vc_row][vc_column][vc_single_image image="2638" 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] Visit VacCoat Ltd. at China International Import Expo (CIIE) 2020 VacCoat Ltd. Will be on hand CIIE 2020 in shanghai. CIIE is a trade fair held annually in China. The 3rd China International Import Exhibition(CIIE) will be held on November 5th to 10th, in Shanghai. In May 2017, Chinese President Xi Jinping announced at the Belt and Road Forum for International Cooperation that China will hold China International Import Expo(CIIE) starting from 2018. The expo is co-hosted by the Ministry of Commerce of China and the Shanghai Municipal Government. It is a significant move for the Chinese government to hold CIIE to give firm support to trade liberalization and economic globalization and actively open the Chinese market to the world. CIIE is…

10Aug 2020 by elina

Carbon-Supported Grids Used in Transmission Electron Microscopy (TEM Grids)

Uncategorized

[vc_row][vc_column][vc_single_image image="2589" 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] Carbon-Supported Grids Used in Transmission Electron Microscopy (TEM Grids) The grids used in TEM microscopes to place specimens are usually made of copper with a mesh size of about 3 mm and a layer of plastic called a formvar and a thin film of carbon. TEM Grids When the samples are placed on the coated grids, the uniformity of the sample layer is one of the important points for proper imaging of biomolecular complex in aqueous solution. For this purpose, it is necessary that the surface in contact with the biological sample, in addition to being hydrophilic, is completely free of contamination. The layer commonly considered as supporting layer is a few nanometer thin film of amorphous carbon. This thin film absorbs…

18Jul 2020 by elina

Material Deposition Table to Select the Appropriate Method of Vacuum Deposition

Vacuum Deposition Method

[vc_row][vc_column][vc_single_image image="2562" 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] Material Deposition Table to Select the Appropriate Method of Vacuum Deposition Vacuum deposition technology is a wide range of different deposition methods(method of vacuum deposition) that are used to create single or multi thin film layers of several nanometers to several micrometers of different materials and compounds on different surfaces in a high vacuum system and have various applications in industry and research fields. In general, the process of deposition of the thin films in vacuum conditions consists of three main parameters: the target material, the substrate, and the process of transferring the material from the target to the substrate. Due to the fact that different elements, alloys and compounds have different physical and chemical properties, choosing the appropriate and efficient deposition…

30Jun 2020 by elina

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…

24Jun 2020 by elina

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…

15Jun 2020 by elina

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…

06Jun 2020 by elina

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…

30May 2020 by elina

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,…

20May 2020 by elina

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…