Report Archives - Page 5 Of 7

04Sep 2021 by elina No Comments

Vacuum Plasma | Vacuum Plasma Treatment

[vc_row][vc_column width="3/4"][vc_row_inner][vc_column_inner][vc_column_text css=""] What Is Vacuum Plasma Treatment? Plasma as the fourth state of matter introduced in 1927 by Langmuir, is observable in various places, from Vacuum plasma in a glow discharge tube in a lab to lightning and flames in the atmospheric presuure. Vacuum plasma treatment is a common method for creating surfaces with desired properties through coating, cleaning, etching, surface activation and functionalization. Plasma can be generated by applying an electric current across a dielectric gas (arcing) or increasing the gas temperature by heating (like a flame) to take out the electrons from atoms and ionizing the gas, making it conductive. These charged particles can affect the electrical characteristics of the gas or be manipulated by external electric/magnetic fields. [/vc_column_text][/vc_column_inner][/vc_row_inner][vc_row_inner css=".vc_custom_1736684354128{background-color: #D9D9D9 !important;}"][vc_column_inner width="1/2"][vc_cta h2="" txt_align="center" style="3d" color="mulled-wine"…

19Jul 2021 by elina No Comments

Glow Discharge Plasma Cleaning and Applications

Report

[vc_row][vc_column width="3/4"][vc_row_inner][vc_column_inner][vc_column_text css=".vc_custom_1693484733942{margin-right: 30px !important;margin-left: 30px !important;}"] Glow Discharge Plasma Cleaning Plasma created by the electric discharge of a gas between two electrodes in a low-pressure chamber is called glow discharge plasma. Glow discharge happens when free plasma electrons recombines with positive ions and emit photons. This phenomenon lies between the dark discharge region with low current ionization and no light emission, and arc discharge with large radiations (Figure 1). Glow discharge plasma contains energetic ionized gases species, which can be used for different purposes, cleaning a surface or coating it, as sputtering deposition method. [/vc_column_text][/vc_column_inner][/vc_row_inner][vc_row_inner][vc_column_inner][vc_single_image image="7411" img_size="large" add_caption="yes" alignment="center" style="vc_box_outline" border_color="mulled_wine" onclick="zoom"][/vc_column_inner][/vc_row_inner][vc_row_inner css=".vc_custom_1736700150128{background-color: #D9D9D9 !important;}"][vc_column_inner width="1/2"][vc_column_text css=".vc_custom_1736700202160{margin-right: 30px !important;margin-left: 30px !important;}"] DC Glow Discharge Plasma Formation The subsequent collisions between gas species, like electrons, ions, and neutral atoms between two…

22May 2021 by elina No Comments

How can I protect a Turbomolecular Vacuum Pump?

Vacuum Pumps, Report, Vacuum Coating System

[vc_row][vc_column width="3/4"][vc_row_inner][vc_column_inner][vc_column_text css=""] How can I protect a Turbomolecular Pump? There is a wide range of mechanical pumping techniques that perform medium vacuum and provide long-time trustworthiness. However, to create High Vacuums (HV) and Ultra-High Vacuum (UHV) for advanced scientific and technological fields which are required in thin-film fabrication devices such as Thermal Evaporation Coating Devices, Sputtering Coaters, Carbon Coaters, Pulsed Laser Deposition (PLD) and the manufacturing processes of layer deposition require for solar cells, semiconductors, optical filters, magnetic sensors, and scanning electron microscope (SEM) sample preparation a turbomolecular vacuum pump with the most highly engineered design is necessary. [/vc_column_text][/vc_column_inner][/vc_row_inner][vc_row_inner css=".vc_custom_1736767774956{background-color: #D9D9D9 !important;}"][vc_column_inner width="1/2"][vc_cta h2="" txt_align="center" style="3d" color="mulled-wine" add_button="bottom" btn_title="Sputter Coaters" btn_style="3d" btn_color="juicy-pink" btn_align="center" btn_link="url:https%3A%2F%2Fvaccoat.com%2Fsputter-coater%2F|title:Sputter%20Coaters%20%7C%20High%20Resolution%20Sputtering%20System|target:_blank"][/vc_cta][/vc_column_inner][vc_column_inner width="1/2"][vc_cta h2="" txt_align="center" style="3d" color="mulled-wine" add_button="bottom" btn_title="Learn more about PLD" btn_style="3d" btn_color="juicy-pink" btn_align="center" btn_link="url:https%3A%2F%2Fvaccoat.com%2Fblog%2Fwhat-is-pulsed-laser-deposition-pld%2F|title:What%20is%20Pulsed%20Laser%20Deposition%20(PLD)%3F|target:_blank"][/vc_cta][/vc_column_inner][/vc_row_inner][vc_row_inner][vc_column_inner][vc_column_text css=""]…

30Jan 2021 by elina 4 Comments

Physical Vapor Deposition (PVD)

Deposition, Report

[vc_row][vc_column width="3/4"][vc_row_inner][vc_column_inner][vc_column_text] Physical Vapor Deposition (PVD) Physical Vapor Deposition (PVD) is a set of vacuum deposition methods in which a solid material vaporizes in a vacuum environment and is deposit on the substrate as a thin film. The most common methods of PVD are Sputtering and Thermal Evaporation. Because in the PVD process, the material is transported and accumulated atom-by-atom or molecule by molecule in a vacuum to the substrate surface, the deposited films have high purity and efficiency that for many applications compared to other deposition methods are preferred. [/vc_column_text][/vc_column_inner][/vc_row_inner][vc_row_inner css=".vc_custom_1713698950630{background-color: #d9d9d9 !important;}"][vc_column_inner width="1/2"][vc_video link="https://youtu.be/I_RnlLafVt0"][vc_column_text css=".vc_custom_1713698898755{margin-top: -20px !important;}"] What is PVD coating? [/vc_column_text][/vc_column_inner][vc_column_inner width="1/2"][vc_cta h2="" txt_align="center" style="3d" color="mulled-wine" el_width="lg" add_button="bottom" btn_title="Read more about Sputtering" btn_style="3d" btn_color="juicy-pink" btn_align="center" btn_link="url:https%3A%2F%2Fvaccoat.com%2Fblog%2Fsputtering%2F|title:Sputtering%20Process%20%7C%20Sputtering%20Deposition%20Method|target:_blank"][/vc_cta][/vc_column_inner][/vc_row_inner][vc_row_inner][vc_column_inner width="1/2"][vc_column_text css=".vc_custom_1689857428683{margin-top: 40px !important;}"] For example, in the construction of the…

30Dec 2020 by elina No Comments

Chemical Vapor Deposition (CVD)

Deposition, Report

[vc_row][vc_column width="3/4"][vc_row_inner][vc_column_inner][vc_column_text css=""] Chemical Vapor Deposition (CVD) Chemical Vapor Deposition (CVD) is a chemical process used to create layers with different applications on different surfaces. In this deposition method, the desired surface (substrate) is exposed to the vapor of one or more chemicals. Then, in order to create a solid layer with the desired chemical composition, the gas atoms in the chamber decompose on the surface of the substrate or react with each other chemically. This deposition method is classified in different ways depending on what chemical method it starts with. [/vc_column_text][/vc_column_inner][/vc_row_inner][vc_row_inner css=".vc_custom_1735825376632{background-color: #D9D9D9 !important;}"][vc_column_inner width="1/2"][vc_single_image image="11849" img_size="large" alignment="center" style="vc_box_outline" border_color="mulled_wine" onclick="custom_link" css="" link="https://vaccoat.com/blog/deposition/"][/vc_column_inner][vc_column_inner width="1/2"][vc_column_text css=""] Deposition is a set of processes used to create thin or thick layers of a substance atom-by-atom or molecule by molecule on a solid…

16Dec 2020 by elina 8 Comments

Deposition Methods | Vacuum Deposition

Deposition, Report

[vc_row][vc_column width="3/4"][vc_row_inner][vc_column_inner width="1/2"][vc_column_text css=""] What is Deposition? Deposition processes help to create thin or thick layers of a substance, established atom-by-atom or molecule by molecule on a solid surface. The created layer during a deposition process serves as a coating on a surface and changes the properties of the substrate surface depending on the application. The thickness of the deposited layers in this process can be in the range of one atom (Nanometer) to several millimeters, depending on the coating method and the type of material. Several methods exist for creating a layer of different materials on different surfaces. These methods are mainly categorized based on deposition physics, like the source phase, which can be the vapor or solution phase of the source material. Why Deposition? It has many advantages…

02Dec 2020 by elina 14 Comments

What is an Electron Microscope?

Report

[vc_row][vc_column width="3/4"][vc_row_inner][vc_column_inner][vc_column_text] Electron Microscope (EM) A group of microscopes that uses a beam of accelerated electrons as a source of radiation is called electron microscopes. Electron microscopy (EM) is a technique for obtaining high-resolution images of biological and non-biological samples. Electron microscopy is used in biomedical research to examine the exact structure of tissues, cells, organs, and macromolecular complexes. The high resolution of electron microscope images is due to the use of electrons as radiation sources. [/vc_column_text][/vc_column_inner][/vc_row_inner][vc_row_inner css=".vc_custom_1706029944763{background-color: #d9d9d9 !important;}"][vc_column_inner width="1/2"][vc_video link="https://youtu.be/ljTEG-B-kGc" align="center" css=""][vc_column_text css=".vc_custom_1706030094281{margin-top: -30px !important;}"] The Principle of the Electron Microscope [/vc_column_text][/vc_column_inner][vc_column_inner width="1/2"][vc_cta h2="" txt_align="center" style="3d" color="mulled-wine" add_button="bottom" btn_title="Selection Materials for SEM Sample" btn_style="3d" btn_color="juicy-pink" btn_align="center" css="" btn_link="url:https%3A%2F%2Fvaccoat.com%2Fblog%2Fselection-material-for-sem-samples%2F|title:Selection%20Material%20for%20SEM%20Samples"][/vc_cta][/vc_column_inner][/vc_row_inner][vc_row_inner][vc_column_inner width="1/2"][vc_column_text] Electron Microscope vs Light Microscope Because the wavelength of an electron beam is 100,000 times shorter than the wavelength…

28Nov 2020 by elina 3 Comments

How to Make the Most Efficient Rotary Pumps?

Report, Vacuum Pumps

[vc_row][vc_column width="3/4"][vc_row_inner][vc_column_inner][vc_column_text css=""] How to Make the Most Efficient Rotary Pumps? Rotary pumps usually have many applications in industry due to their ability to work for a long time in industrial and difficult conditions. So rotary pumps maintenance is very important. Almost all vacuum coating systems made by Vac Coat Ltd. are equipped with two-stage rotary pumps. In models such as DST3, DST1, DCT, etc., which use turbomolecular pumps to create a high vacuum environment, these pumps are usually used as backing pumps. [/vc_column_text][/vc_column_inner][/vc_row_inner][vc_row_inner css=".vc_custom_1749563130349{background-color: #D9D9D9 !important;}"][vc_column_inner width="1/2"][vc_cta h2="" txt_align="center" style="3d" color="mulled-wine" add_button="bottom" btn_title="Carbon Coaters" btn_style="3d" btn_color="juicy-pink" btn_align="center" btn_link="url:https%3A%2F%2Fvaccoat.com%2Fcarbon-coater%2F|title:Carbon%20Coaters%20%7C%20Vac%20Coat%20Desk%20Carbon%20Coaters|target:_blank"][/vc_cta][/vc_column_inner][vc_column_inner width="1/2"][vc_cta h2="" txt_align="center" style="3d" color="mulled-wine" add_button="bottom" btn_title="Turbomolecular Pumps" btn_style="3d" btn_color="juicy-pink" btn_align="center" btn_link="url:https%3A%2F%2Fvaccoat.com%2Fblog%2Flearn-more-about-turbomolecular-pumps%2F|title:Learn%20More%20about%20Turbomolecular%20Pumps|target:_blank"][/vc_cta][/vc_column_inner][/vc_row_inner][vc_row_inner][vc_column_inner][vc_column_text css=""] Rotary Vacuum Pumps Rotary Vacuum Pumps are in the group of displacement pumps and are of the positive…

02Nov 2020 by elina 2 Comments

Hydrophilicity and Hydrophobicity: Deposited Carbon Thin Film

Report

[vc_row][vc_column width="3/4"][vc_row_inner][vc_column_inner][vc_column_text] What is Hydrophobicity and Hydrophilicity? The hydrophilicity or hydrophobicity of different surfaces depends on their chemical composition and structural geometry. This feature of the surfaces plays a significant role in our nature and daily life. If water beads up into droplets and does not spread evenly across the surface, it is called a hydrophobic surface. On hydrophobic surfaces, the contact angle of water droplets with the surface is larger than about 45º. In contrast, if a water droplet placed on the surface is evenly distributed with a small contact angle with the surface, it is called a hydrophilic surface. In most cases, surface hydrophilicity increases due to the presence of hydrophilic groups such as hydroxyl (OH), carboxyl (COOH) and carbonyl (CO) on the surface. [/vc_column_text][/vc_column_inner][/vc_row_inner][vc_row_inner][vc_column_inner][vc_single_image image="7300" img_size="large" add_caption="yes"…

08Sep 2020 by elina No Comments

Pyrolytic Graphite

Report, Sputter Coater, Thin Film

[vc_row][vc_column width="3/4"][vc_row_inner][vc_column_inner][vc_column_text css=""] 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, while the second layer is slightly displaced relative to these two layers. [/vc_column_text][/vc_column_inner][/vc_row_inner][vc_row_inner css=".vc_custom_1736772485291{background-color: #D9D9D9 !important;}"][vc_column_inner][vc_column_text css=""] Pyrolytic Graphite Structure But the material deposited as pyrolytic graphite consists of layers of wavy, twisted plans composed of carbon atoms arranged in a hexagonal structure.…

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