Understanding the Volatile Nature of Thin Film Evaporation

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Written by: Denton Vacuum, LLC

Thin film evaporation consists of a volatile exchange of heat, pressure, and contact.

The process of thin film evaporation revolves around the thermal separation of products or materials within a vacuum chamber. Through a mechanically generated process, a highly thin and turbulent liquid film is placed on the material resulting in a durable coating.

Diving In

The sputter coater, or thin film evaporator, takes the product and utilizes its rotor to uniformly spread the material out on the distribution ring. Upon first contact with the first rotor blades, the material is immediately formed into a film that can range anywhere from 0.5 mm to 3.5 mm (depending on the requested specifications). Now, in front of each rotor blade, the fluid will create a bow wave that further assisted the deposition process.

Note that the fluid within the gap between the heat transfer surface an the tip of the rotor blade is extremely turbulent which in turn leads to an intense heat and mass transfer rate. This is vital for the process as it ensures that there is enough pressure to convert the material into a thin film. Additionally, the turbulence also produces a high volume of heat transfer coefficients even with the presence of viscous products. The intense process and exchange prevents the process from over heating, which is especially important in diamond like carbon coatings, as well as fouling on the heat transfer surface. The elimination of these detrimental effects ensures the coating comes out even and smooth.

The Basics of Sputtering Systems

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Sputter deposition is a commonly used method that provides thin films on a substrate.

science-technology-circuitSputtering is essentially a process wherein a controlled, mainly an inert argon, is led into a vacuum evaporation system which then a cathode become electrically energized to generate a self sustaining plasma. The cathode, which is referred to as the target, is a partial piece of the material that is applied over the substrate. The gas atoms will then become positively charged through the loss of ions. It will then become accelerated with a substantial amount of kinetic energy which then hits the target and dislocates the atoms. The sputtered material will then consist of a vapor stream, which will pass through the chamber and stick onto the substrate as a coating or film.

The Basics of Sputtering

Now, the substrate’s surface must be kept clean in order to obtain solid film adhesion. Effective cleaning and handling procedures must be used before placing the substrate into the vacuum chamber. Otherwise, the results may vary, and the coating or film will not have the necessary properties that are needed. It is common to incorporate cleaning features such as sputter etch into the system as an option as well. There must be various measures taken in order to obtain the finest qualities and properties. The design of the sputter deposition system allows engineers to adjust a number of parameters to improve variables such as: uniformity, thickness, stress, adhesion strength, electrical properties, and more. Also, the power type that is employed on the cathodes must also be taken into account. DC power is most often used.


Denton Vacuum, LLC is a manufacturer of deposition systems. With a wide variety of units, they’ll ensure that you find the right system based on your needs. If you are in need of thermal evaporation system, visit Denton Vacuum, LLC online today.

The Three Fundamental Steps of PVD

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Article written by Soft informer

Physical vapor deposition is a fairly simple process that involves various substance changes.

The process of physical vapor deposition is essentially created by a group of surface coating technologies that are used for a variety of purposes that include: tool coating, aesthetic, and equipment coating. Additionally, this process involves vaporization coating which utilizes atoms in a type of material transfer from solid to vapor, and then back to the solid phase. Eventually, the resulting material ends up with a film being created on top of the surface.

When it comes to reactive deposition, the material that’s being deposited reacts with an environment that’s primarily gaseous and also filled with co-deposited materials to form a compound material film – i.e. carbide, oxide, etc.

PVD coating can be done in several ways, but there are three basic categories that include: ion plating, evaporation, and sputtering. These three processes all use the same fundamental steps to create the coating. Now, they may use the same fundamental steps, but they generate and deposit material differently, requiring unique equipment pieces catered to each process.

Fundamental Steps

The first fundamental step involves a vapor phase from the coating material through sputtering, evaporation, chemical vapors, etc. The second step involves the transfer of vapor from source to substrate. Finally, the last state involves the film growth and deposition on the substrate.

One example of a PVD process is the creation of medical device coatings. Certain equipment pieces like catheters require there to be a coating to minimize the risk of blood clots, infection, and rejection. These coatings are produced over the catheters and kept in a sterile condition, as to reduce the chances of any bacteria entering the body on use.

Denton Vacuum, LLC is your home for PVD thermal evaporation equipment. Visit their inventory online today.

How to Choose an iPhone App Developer

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Do you have a great idea for an app? If you want to hire iPhone app developers Los Angeles to create an app for your business, here are some tips to help you decide on the right company for you.

  1. Ask for recommendations.

Asking for recommendations is a simple way to find out about good developers. Ask people to tell you what they liked or didn’t like, how much the services cost and what they got for their money. Word of mouth is probably the best recommendation for a good iPhone app development company Los Angeles.iphone-app-dev

  1. Ask to see facts and figures.

If you’re considering a particular app developer, ask them to show you some hard and fast facts and figures on their work. You can also ask to see case studies or feedback from former clients. This information should help you decide if this developer is right for you.

  1. Search the Web for feedback.

This is a great way to find out more about a particular company. Use Google to search for the developer but then look at other sites, not the developer’s site. You may find personal blogs or independent reviews of mobile app developers Los Angeles.

  1. Ask for a quote.

Tell the developers what you want and ask for a quote. Ask them to tell you how they can serve your particular needs. This is a great way to see how they communicate as well as find out what they can offer you.

Bio: If you’re looking for iPhone app developers in Los Angeles, check out Halcyon Innovation online when you click here.

A Brief Overview on the Various RNA Components

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Article written by Menlo Software, news , articles , tips on software & more

Read below to see what classifications come from the transcription of RNA synthesized products.

RNA synthesis is a complex process that generally involves the nucleotide polymers. Each nucleotide primarily consists of a sugar that is attaches to any f the four bases – typically the phosphate group.

When it comes to transcription, RNA polymers process one out of the two complementary strands of DNA. The strand chosen by the polymer is called the template strand, the other being the nontemplate strand. Transcription and synthesis work hand-in-hand because the RNA bases that have been synthesized are complementary to the template DNA strand. Therefore, the bases in the template strand and the synthesized RNA are identical in sequence with only subtle exceptions.

Classifications

Upon transcription, four different classifications of RNA are produced that all play a vital role within the entire transcription process.

The first classification is the messenger RNA, which is the coding template of the translation process. The second classification focuses more on the encoding sequence by inserting amino acids into the polypeptide chain. The third classification assists with the synthesis of the polypeptides. Finally, the last classification splices and modulates the small and micro RNA’s.

All of these classifications play a role in a successful transcription process. This is just the tip of the iceberg and there are more distinct classifications and steps taken to achieve a functional resulting sequence. The RNA synthesis process involves additional strands, both coding and template-relate, to complete the transcription. If you take an in-depth look into the minor components of this process, you’ll find that there are numerous ways that the mechanism can go about generating all of these classifications.


 

The Midland Certified Reagent Company supplies oligonucleotides for your needs. If you’re looking to find a modified oligo for your research purposes, visit the Midland Certified Reagent Company today.

Debunking the Myths of Biometric Time Clocks

Posted by: admin  :  Category: Business Services, Services, Software, Technology

Article written by GigaTech, latest technology, news & articles

Read below to find out whether or not biometric time clocks are safe to use.

allied time 3There are many myths floating around about biometric time clocks having a negative impact on a business. While many believe that these are true, this resource is going to dive deep into the most commonly asked questions to debunk them once and for all.

Biometric Time Clocks Won’t Work in the Cold

It’s logical to believe that the cold, or even dirty fingerprints, will impact the sensors of the time clocks causing errors within the system. Multi-spectral technology has reduced the number of faults from occurring because of these conditions. Environmental conditions as well as dirt and grime will still be able to be read accurately.

Biometric Time Clocks are Difficult to Set Up and Manage

As soon as the specified software is uploaded into these time clocks, employees can be automatically entered into the system the very first time they punch in. This leaves you with less of a hassle to worry about. Plus, many models will send reports to a direct computer for managers and administrators as soon as the pay period comes around.

Biometric Time Clocks Store Personal Information

A biometric employee time clock is not set up to capture and save personal information. As a matter of fact, your image or your fingerprint’s scan isn’t even saved within the database. A template is created around the contour of your image, assigning numerical values to it. As a result, the time clocks will measure the numbers, not the face. So, safety issues won’t be a concern in the work environment.

Allied Time has been servicing businesses’ time and attendance needs for over 40 years.

The Components of RNA Synthesis

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Article written by Anextek, a technology blog

Summary: The four essential components vital for a successful synthesis are explained.

Understanding the process of RNA synthesis can be like learning a new language. With all of the science-based verbiage that must be understood to fully comprehend what’s going on, here is a quick overview of some of the distinct classifications of when it comes to generating these different classes.

When RNA transcription occurs the mechanism, which is essentially RNA polymers working hand-in-hand with a template strand of DNA, creates four classifications of RNA

The first type of classification is the messenger RNA which is primarily utilized to be a coding template to determine the order of the amino acids forming a chain of elongated polypeptides during translation process.

The second type of classification involves the insertion of the amino acids into the polypeptide chain. This class helps out in regards to the encoding sequences of the mRNA.

The third type of classification is the ribosomal RNA. This classification forms the ribosome’s to further assist with the polypeptide synthesis.

The last classification involves the small and micro RNAs. The small and micro RNAs involved deal with the splicing and modulation.

The RNA polymers depend on the DNA templates to be able to proceed with the synthesis stage. It compliments the DNA template strand but is identical to the non-template strand, also called the coding strand. Why it’s considered to be the coding strand is because the sequences are similar in nature to the mRNA.

With a brief understanding of the components involved within the RNA synthesis process, you can move on to learning the essentials of what RNA synthesis is all about.


 

Bio: The Midland Certified Reagent Company specializes in products for DNA and RNA synthesis. For more information visit their website or call them for inquiries.

Time Clocks Give You More From Each Employee

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By Allied Time

Would you like to take your company to the next level? Of course you would! Everyone wants to run an organization that’s as successful as possible. There’s no other way you’re going to see results. In fact, thanks to globalization, if you’re not constantly pushing your company forward, as hard as you can, you’ll soon find that you’re going out of business. Some competitor will quickly take your place.

allied time 3How do you go about getting more from your company then? Well, let’s look at what you’re already using to your advantage. Employees are an obvious one. They’re a huge asset that can make or break their employer. Plus, you probably spend a good amount on them too. Like most companies, employees probably make up the majority of your overhead.

How do you go about getting more from them then? It’s actually quite simple. Invest in nothing more than a time clock and you’ll soon see incredible results. These days, there are even more advanced versions, like biometric time clocks, that can help with this goal.

In any case, all you need is a good clock that ensure employees are showing up when they’re supposed to and working until they’re scheduled for. This is hugely important.

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Never underestimate the power of good time clocks on your business. Though it may not be the most technologically advanced asset you invest in, this one thing can help you get more productivity from your workers.

Reasons for Using Time Clocks

Posted by: admin  :  Category: Business Services, Software, Technology

Written by: Allied Time

Time machines are a necessary part of doing business these days. Even if you’ve got a small company or a casually run startup, you are almost guaranteed better productivity if you utilize time management systems to keep track of tasks and how your employees spend their time.

 photo T2eC16NHJIE9qSO8GiEBRY0nqG7Ww--_32_zpsmobgurwx.jpg

The benefits of timekeeping machines are surprising. Even very small business, made up of less than twenty or even less than ten people, have a lot to gain from tracking your company’s time usage. Even someone who is self employed and runs the show all by their lonesome will be surprised at what they learn from using employee time clocks. Even if you are not concerned about the laziness or production and return rate of your employees, measuring expenditure, return value, and resources consumed in terms of time increments reveals statistics about how your business performs and could improve.

The numbers speak for themselves, but let’s say you’re a one-man or one-woman show who freelances or operates a business completely independently. That’s great, but being your own boss has some drawbacks: what if your bossy is actually a lazy jerk? Sure, your bottom line may look impressive, but if you took advantages of time metric systems to see how you’re approaching and finishing each project versus your income and supply expenditure, you may realize that you could either be making way more money or having way more vacation time!

There’s also a validation argument for utilizing time systems. Simply put, it looks better to consumers if you can keep accurate track of how their money was spent serving them. Illegible scribble in a cheap spiral notebook or a simple spreadsheet is just the bare minimum. Extensive and to-the-minute metrics of project time management looks extremely impressive to your customers, and it gives them something physical that they can then hand off to anyone else they might recommend your services to, making your business that much more convincing and attractive.

If you’ve only got an old-school conception of those silly punch-card time clocks, get rid of it. Modern systems are much more sophisticated, and, let’s be honest, are much cooler now. For example, there are biometric time clocks that utilize things like fingerprints to keep track of your employees. This is sure to be impressive to any potential customers observing your place of business, and this sort of image might just be a huge advantage to a small or independent operation.

New Advances in Medical Device Production

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Written by: Denton Vacuum, LLC

Summary: Using sputter deposition and thermal evaporation, you can manufacture almost any product a patient might need.

Medical devices have undergone some serious changes in the past few years that have made them cheaper, and also more durable. New advancements in manufacturing allow companies to make minimally invasive products, and durable replacement parts. The same techniques that go into manufacturing semiconductors are now part of the medical field. Here are just a few of the benefits they bring.

Durability

A thermal evaporation system can coat one material in the particulates of another material. This is especially useful for manufacturers of medical devices, as they can coat plastic pieces and metalize them. The end result is a more durable part. Take hip joints, for instance. These replacement parts are crucial to the elderly and disabled. Thermal evaporation allows manufacturers to produce these devices at low cost, using parts that wouldn’t normally work long-term.

Comfort

Medical device coatings allow patients to wear something in the body with minimal discomfort. These devices usually make tubes like catheters more pliable, so they can easily slide into place and set there for days at a time without the patient experiencing pain. A special process is used to coat the tubing in an aqueous substance that prevents the device from sticking to the body’s internals.

Final Thoughts

UHV sputter deposition, and thermal coatings, has dramatically changed how devices are manufactured. New devices are made with cheaper materials, and then reinforced to a level of quality not otherwise possible. Eye glasses also receive this treatment to achieve the anti-glare affect. Ultimately, cheaper devices keep healthcare costs down.