Diamond-MT's Blog

Protecting MEMS with Parylene Coatings: No Small Feat

Posted by Sean Horn on Fri, Feb 27, 2015 @ 01:08 PM

As engineers continue to seek out the most powerful technologies packed into the smallest footprints possible, the use of microelectromechanical systems (MEMS) are on the rise. At the forefront of progress in miniaturization, MEMS enable small form factors without sacrificing precision and reliability. In many cases, MEMS technologies even offer an increase in performance over their larger, traditional counterparts. MEMS technologies can also be produced at low cost, owing to the use of semiconductor fabrication methods.

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Tags: parylene

Parylene C vs Parylene N

Posted by Sean Horn on Tue, Feb 17, 2015 @ 11:07 AM

Parylene and It's Uses

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Tags: parylene, parylene C, parylene n

Parylene for Defense Applications

Posted by Sean Horn on Wed, Feb 04, 2015 @ 09:54 AM

What is Parylene?

Parylene is a conformal protective polymer used for coating, first postulated by Michael Szwarc in 1947. His early experiments involved the decomposition of the solvent p-xylene. His worked proved that when the vapors of the p-xylene reacted with iodine, para-xylyene di-iodide was the only resulting product. The reaction produced only a low yield and the process was later made more efficient by William F. Gorham.

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Tags: parylene, defense

Sterlization of Parylene

Posted by Sean Horn on Tue, Jan 06, 2015 @ 08:19 AM

Regardless of the variant, Parylene in general garners a great deal of praise for the many advantages it offers as a protective conformal coating for applications as varied as medical, aerospace, defense, LEDs, and automotive. Chief among the coating’s benefits, however, is that it can withstand common sterilization techniques, such as electron beam (e-beam), gamma, ethylene oxide (EtO), and autoclave.

Like many chemicals, para-xylylene actually comes in several common variants:

  • N. The most basic type of the compound is highly elastic and, as such, is very good at penetrating small areas on components.
  • C. The C variant of the chemical replaces one aromatic hydrogen component with a chlorine atom. It is less elastic and is extremely popular in medical applications, in part due to its high degree of moisture resistance.
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Parylene for Industrial MEMS

Posted by Sean Horn on Thu, Oct 02, 2014 @ 01:42 PM

For contemporary industrial uses, sensors collect and respond to analog information, transforming it to a digital format.  Sensor design for many uses has increasingly relied on microelectromechanical systems (MEMS) technology.  MEMS are semiconductor-made micro-mechanisms, which typically work by deflecting optical signals from input-to-output fibers by deploying movable micro-mirrors.  They demonstrate virtually unlimited potential for an exceptional range of rapidly evolving products for information technology (IT), telecommunications, consumer electronics and automotive engines, among many other purposes.  

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Parylene and Ruggedization

Posted by Sean Horn on Tue, Jul 29, 2014 @ 08:25 AM

Ruggedized products are conceived for use in severe conditions, environments where excessive moisture or dryness, extreme temperatures, high levels of vibration, wind, or lack of atmosphere are the rule.   Internal components of these specialized products require the same degree of ruggedization as exteriors. 

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Tags: parylene, parylene conformal coating, rugged electronics

Parylene Removal, Rework, and Repair

Posted by Sean Horn on Wed, Jul 16, 2014 @ 10:03 AM

Parylene's benefits as a conformal coating are well known. It resists heat, cold, moisture, and pressure; salt spray, electricity, and solvents can't permeate it. And while these attributes of parylene contribute to the conformal coating's appeal, they also present distinct challenges, particularly in regards to parylene removal, rework, and repair.

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Tags: parylene, parylene conformal coating, parylene rework

Parylene: Protecting Life-Enhancing Medical MEMS Technologies

Posted by Sean Horn on Wed, Jan 15, 2014 @ 11:07 AM

Driving development of such emerging areas as microfluidics, advanced bio-sensing, capsule endoscopy, and personalized medicine, microelectromechanical systems (MEMS) are enabling an array of breakthroughs that promise to enhance patient care and outcomes.  Protecting sensitive MEMS products from the harsh conditions both inside the body and out is Parylene conformal coating, which is helping to bring these futuristic technologies to fruition.

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Tags: parylene, Medical conformal coatings, Parylene and MEMS, medical parylene

5 Key Properties of Parylene

Posted by Sean Horn on Tue, Jan 07, 2014 @ 09:42 AM

Since its discovery in the 1940s, Parylene has skyrocketed to prominence as an ideal conformal coating choice for a range of applications. Given its unique blend of properties, it might seem like an unparalleled conformal coating option. In many ways, it is. Here are five key properties of Parylene that differentiate it from the rest.

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Tags: parylene, parylene properties, parylene C

Parylene: Protecting MEMS in the Military

Posted by Sean Horn on Mon, Dec 23, 2013 @ 01:47 PM

Offering sensitivity and performance in a compact package, microelectromechanical systems (MEMS) have become increasingly prevalent in U.S. military applications over the last few decades and are enabling significant technological advances. As with all things military, however, robust protection of these sensitive electronics is imperative in order to ensure that they can withstand the harsh conditions often found on the battlefield. Conformal coatings such as Parylene can help MEMS-based military technologies withstand conditions such as extreme temperatures, humidity, dust/dirt, chemicals, and rugged terrain.

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Tags: parylene, Parylene and MEMS, parylene applications