Differentiating Physical Vapor Deposition from Chemical Vapor Deposition

Article written by The Digital Terror

PVD and CVD are both reliable techniques utilized in various industries today.

Physical Vapor Deposition (PVD) and Chemical Vapor Deposition (CVD) are two types of deposition techniques that are used to create very thin film layers of a material of choice onto a substrate. Mainly used in the semiconductor production industry, where thin layers are prevalent, both techniques have been making their way into any other industries as well like optics, solar panels, and others. This article will showcase the main differences between the two are the processes that they employ.

As their names imply, PVD utilizes physical forces to deposit while CVD uses chemical reactions. Regardless of the process, both of these techniques produce a thin film in the end.

Physical Vapor Deposition

During the PVD coating process, a source material is gasified through the process of evaporation, the application of electric power, lasers, and other techniques. This evaporated material will then condense onto the substrate, therefore creating the thin film. No chemical reactions occur throughout the process.

Chemical Vapor Deposition

CVD on other hand, uses a source material that is not as pure due to it being mixed with a volatile precursor material. This mixture is then injected within a chamber containing the substrate, where the deposition process occurs, similar to PVD thermal evaporation. Once the mixture adheres to the substrate, the precursor will then decompose, leaving behind a layer of the source material in the substrate. After this, the product is then removed from the chamber through gas flow. This process can also accelerated through the use of plasma, heat, and other processes.


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Different uses for portable air conditioning

Written by Movincool

Portable air conditioners are self-contained units that are quick to set up and install. They can be used for events or emergencies. Anywhere that requires some form of spot cooling. Here are a few examples of different use cases:

Outdoor events

Outdoor events like weddings and concerts are perfect uses for a spot cooler. Outdoor wedding marquees can be cooled on hot summer days and opened out in the evening. Concert and event back-end equipment and crews will need cooling while the event is run. Even what people assume to be impossible to cool events can usually be covered using one or many portable air conditioners.

Server rooms

These installations can be permanent or temporary for emergencies. Some server room designs are based on enclosed clusters of racks facing each other. These enclosures are perfect for portable air conditioners. In other designs, a portable unit can be brought in when there is a failure of the central air conditioner and system uptime has to be maintained. There have been times when multiple portable units have been used to cool an entire server farm while the main unit is under maintenance.

Workshops

Another good use case is for cooling industrial workplaces. Factories and other facilities sometimes cannot afford to cool an entire structure. In those cases, portable cooling can be used to cool areas where staff will be concentrated. This allows economical cooling while maintaining the high productivity levels that come with cooler workspaces.

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Movincool is a supplier of industrial cooling solutions and portable air conditioners. Look no further for future outdoor cooling needs.

 

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How to Understand Aviation Starting Units’ Voltage Ranges

Written by: Start Pac

Summary: Starting units are powerful aviation tools that can provide additional power when needed.

When it comes to selecting the right type of battery packs for your aircraft, aircraft start units are the ideal solution when it comes to the majority of models. With an enhanced design, it can immediately start an aircraft ranging from a small commercial plane to a major business airplane. These starting units are powerful, durable, and efficient for use. Here is a brief overview on what you need to know when it comes to choosing the right starting unit for your plane.

How to Find a Starting Unit

When finding a portable power supply for your aircraft, the first thing that you’ll need to know is that it comes in a range of voltages (12V, 24V, and 28V). It’s not only important that you choose the right one, but you need to consider what you are going to use the starting unit for. Do you need it solely for emergency purposes, or will you be using it multiple times throughout the day? By figuring this out, you’ll be able to narrow down which unit will work best with your lifestyle.

Discussing the Voltage of Starting Units

This is only the first step, you’ll also need to understand the various voltages. It’s highly recommended that you speak to a specialist in the department that you are purchasing from to ensure that it’ll function correctly with your aircraft. Although this piece of aircraft maintenance equipment is enough for an aircraft, there are certain cases where additional power is needed. Speak with a specialist in regards to this.

For small aircraft, the voltage requirement that you’ll need is 12V. There are various sizes and models, however the larger sizes are normally for larger aircrafts. Standard DC powered aircraft require 24V DC to start up. Most of the designs have a 24V battery within, therefore it requires a 24V unit to start. Now, when it comes to these units, you have choices. You can purchase a portable unit, or you can have one that is attached to a large trolley cart. 28V units are also available – although many of these are sole with the purpose of having peace of mind, as most aircraft will start up with a 24V current. However, there are a few aircraft models that are volt sensitive and will require a 28V unit to start. Discuss this with an expert beforehand so you won’t have any difficulties when using it.

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Netflix now allows downloads

Article written by SuperTechStore

In a surprise announcement by Netflix, a much-requested feature has finally been enabled: the ability to download TV shows and movies for offline viewing. In some respects, it is surprising that it took so long for this to become a reality. There are, however, some limits.

The first is that it is limited to certain shows only. For the moment this covers almost all of Netflix’s own originals and some others. For example, shows like Orange is the New Black, Narcos and The Crown are available right now. According to Netflix, we can expect the catalog of offline capable shows to grow as the licensing deals are negotiated.

Another limitation is that it is only possible on smartphone and tablets. For the moment, it cannot be done on desktop computers or even TV compatible systems.

In order to download a show, navigate to the episode list of the show. Supported shows will have a download symbol to the left of the play button. Clicking on this will start the immediate download of that episode and will be enabled for offline playback.

With Netflix expected to produce nearly 50 shows per year for the next two years, the catalog of offline capable shows will grow. In order to avoid losing the licensing revenue from Netflix, it is also quite plausible that other networks will also allow some of their shows to be downloadable.

Netflix will be rolling out the latest version of its app which is required to download offline capable shows.

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The items you will need for a connected home

Article written by My system journal

The smart home, or what can be more accurately described as a connected home is the next big thing coming out of Silicon Valley. Setting up your own smart home is not very difficult. There are many competing brands and standards, but for the most part, they are somewhat interoperable. Here is everything you will need for a connected home:

The first and primary device will be a hub, it could the Smart Things hub by Samsung or the Amazon Echo, either way a single point of control will be needed. For items that do not have compatibility look for IFTTT support to bridge the gap.

The next item will be a light bulb. There are Wi-Fi or Bluetooth bulbs that can be controlled by the hub. Alternatively, there are remote controlled switches that do not require connected bulbs. It is also more cost effective.

The next two items will be for security. The two are a connected front door lock and a bunch of door/window sensors. Use the sensors to check any windows or sliding windows for when they open and close. The front door lock will allow you to enter your home with a code or from the app and record the coming and going.

For enhanced security, setup cameras around the house. The cameras can be triggered on any activity picked up with the door/window sensors. Motion sensors, remote plug controls, IR controllers, Thermostats and smoke detectors are just a few more parts of your home that you can bring online.

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List of gadgets for your home

Article written by Integral Storage

Thanks to improvements in home networking, internet connectivity and smartphone proliferation, there are more and more gadgets that are specific for homes launching every year. Here is a look at three growing categories and what they can do:

Voice Assistants

This market was pioneered by Amazon with its Echo speaker/assistant powered by Alexa. Google is now getting into the market with its soon to be launched Google Home device. Both are controlled by voice and can do everything from control your lights, setting reminders to playing music. You can also ask general knowledge questions and get answers.

AV

Chromecasts and devices like the Apple TV allow the user to send video from the smartphone directly to the TV. You can even send the song you are listening to directly to a Chromecast Audio device or capable speaker. The advantage here is that selection is done on the phone but after it is cast, or air-played, the other device then takes over showing it on the TV.

Audio

For multi-room audio, the main company in this market is Sonos. Although not cheap, the speakers produce high-quality audio and can be controlled independently or in groups. Google’s Chromecast Audio also has multi-room capability but so far has not added the ability to group different rooms for audio or volume control.

These are just three of the many categories of devices that can be used to make your home connected.

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