--- title: Blog | CORIAL | Corial description: Blog | CORIAL --- [![CORIAL-PT-LOGO-2021 v6](https://corial.plasmatherm.com/hs-fs/hubfs/CORIAL-PT-LOGO-2021%20v6.png?width=3397&height=1147&name=CORIAL-PT-LOGO-2021%20v6.png "CORIAL-PT-LOGO-2021 v6")](https://corial.plasmatherm.com/en) Menu - [ABOUT](https://corial.plasmatherm.com/en/about-corial) - Blank wrapper - [Plasma-Therm Website](http://plasmatherm.com/) - [TECHNOLOGIES](https://corial.plasmatherm.com/en/technologies/plasma-technologies) - blank - blank-inner - Plasma etch - blank-inner - [RIE](https://corial.plasmatherm.com/en/technologies/reactive-ion-etching-rie) - [ICP-RIE](https://corial.plasmatherm.com/en/technologies/icp-rie-inductively-coupled-plasma-reactive-ion-etching) - [DRIE](https://corial.plasmatherm.com/en/technologies/drie-deep-reactive-ion-etching) - blank - blank-inner - blank-inner - [ICP-CVD](https://corial.plasmatherm.com/en/technologies/icp-cvd-inductively-coupled-plasma-chemical-vapor-deposition/) - [PECVD](https://corial.plasmatherm.com/en/technologies/pecvd-plasma-enhanced-chemical-vapor-deposition) - blank - blank-inner - blank-inner - [ALE](https://corial.plasmatherm.com/en/technologies/ale-atomic-layer-etching) - [ALD](https://corial.plasmatherm.com/en/technologies/ald-atomic-layer-deposition) - [BLOGS](https://corial.plasmatherm.com/en/blog) - Blank wrapper - [CORIAL Blog](https://corial.plasmatherm.com/en/blog) - [Plasma-Therm Blog](https://blog.plasmatherm.com) - [CONTACT US](https://corial.plasmatherm.com/en/contact-us) - Blank wrapper [![Understanding DC Bias](https://corial.plasmatherm.com/hubfs/RIE-reactive-ion-etching-Si3N4-etch.jpg)](https://corial.plasmatherm.com/en/blog/understanding-dc-bias) ## [Understanding DC Bias](https://corial.plasmatherm.com/en/blog/understanding-dc-bias) Dec 21, 2020 | [Plasma Processing Technology](https://corial.plasmatherm.com/en/blog/tag/plasma-processing-technology) Inductively Coupled Plasma (ICP) etching provides the benefit of nearly independent control of chemical and physical contributions to the etching process. The ICP provides the primary input of energy for creating reactive species and ions. A Radio-Frequency (RF) bias on the substrate electrode imparts the means for controlling the ions’ acceleration and the physical aspect of the etching. Understanding how this bias is created, measured, and its effect on the process helps process development efforts.... [Learn More +](https://corial.plasmatherm.com/en/blog/understanding-dc-bias) [![Endpoint Basics](https://corial.plasmatherm.com/hubfs/Endpoint%20pic.jpg)](https://corial.plasmatherm.com/en/blog/endpoint-basics) ## [Endpoint Basics](https://corial.plasmatherm.com/en/blog/endpoint-basics) Sep 24, 2020 | [Plasma Processing Technology](https://corial.plasmatherm.com/en/blog/tag/plasma-processing-technology) How do you know the precise moment when your deposition or etching process is completed? How can you tell, with accuracy, that you've etched to a necessary depth, removed a layer or even deposited to a required thickness? The answer is simple: you use endpoints. Here's an introduction to endpoint technology; methods, comparisons, and considerations.... [Learn More +](https://corial.plasmatherm.com/en/blog/endpoint-basics) [![How CORIAL Helped FATRI Increase Production Yield and Capacity](https://corial.plasmatherm.com/hubfs/CORAIL%20FATRI%20Case%20study%20social%20image-1-1.png)](https://corial.plasmatherm.com/en/blog/how-corial-helped-fatri) ## [How CORIAL Helped FATRI Increase Production Yield and Capacity](https://corial.plasmatherm.com/en/blog/how-corial-helped-fatri) Aug 11, 2020 | [Featured Solutions](https://corial.plasmatherm.com/en/blog/tag/featured-solutions), [Customer Spotlight](https://corial.plasmatherm.com/en/blog/tag/customer-spotlight) The Client FATRI United Testing & Control Technologies Co., LTD, is a leading service provider of chip design and advanced material synthesis for IoT, sensors, and AI. With four branches across China, FATRI provides chips, sensors, computing modules, calibration systems, and advanced materials to companies across the globe.... [Learn More +](https://corial.plasmatherm.com/en/blog/how-corial-helped-fatri) [![Etch Selectivity FAQ](https://corial.plasmatherm.com/hubfs/etch%20selectivity%20%282%29.jpg)](https://corial.plasmatherm.com/en/blog/etch-selectivity-faq) ## [Etch Selectivity FAQ](https://corial.plasmatherm.com/en/blog/etch-selectivity-faq) Aug 5, 2020 | [Etching Tools](https://corial.plasmatherm.com/en/blog/tag/etching-tools) What is Etch Selectivity? Etch selectivity is the ratio of etch rates between materials. The formula for etch selectivity is Selectivity = Etch Rate A/Etch Rate B. It is often used when describing the relative etch rates between a mask (used for patterning) and the etch rate of the material of interest.... [Learn More +](https://corial.plasmatherm.com/en/blog/etch-selectivity-faq) [![8 Top Universities with Plasma Processing Technology](https://corial.plasmatherm.com/hubfs/8%20Top%20Universities%20with%20Plasma%20Processing%20Technology.jpg)](https://corial.plasmatherm.com/en/blog/8-top-universities-with-plasma-processing-technology) ## [8 Top Universities with Plasma Processing Technology](https://corial.plasmatherm.com/en/blog/8-top-universities-with-plasma-processing-technology) Jul 21, 2020 | [Research and Development](https://corial.plasmatherm.com/en/blog/tag/research-and-development), [CORIAL products](https://corial.plasmatherm.com/en/blog/tag/corial-products) Plasma processing technology (e.g., etching, PECVD, and CVD) is a crucial component of semiconductor manufacturing and nanotechnology. As semiconductors become increasingly common across materials and electronics applications, the use cases for plasma processing are constantly increasing. At the same time, nanotechnology is presenting itself as a significant body of research that promises to provide value across industries — both commercially and non-commercially.... [Learn More +](https://corial.plasmatherm.com/en/blog/8-top-universities-with-plasma-processing-technology) [![The Butterfly Project](https://corial.plasmatherm.com/hubfs/CORIAL%20Logo%20Blog.png)](https://corial.plasmatherm.com/en/blog/butterfly-project) ## [The Butterfly Project](https://corial.plasmatherm.com/en/blog/butterfly-project) Jun 25, 2020 | [Company News](https://corial.plasmatherm.com/en/blog/tag/company-news) The BUTTERFLY project: Thanks to previous work, notably carried out within the framework of the IAN Bright project, Soitec has developed a disruptive substrate for the growth of LEDs, called InGaNOS (InGaN on sapphire on islands of 100µm to 1mm for LED-based lighting applications blue).... [Learn More +](https://corial.plasmatherm.com/en/blog/butterfly-project) [« Older Entries](https://corial.plasmatherm.com/en/blog/author/corial/page/2) ### Subscribe Here ### Recent Posts ### Post Tags - [Plasma Processing Technology (28)](https://corial.plasmatherm.com/en/blog/tag/plasma-processing-technology) - [Company News (16)](https://corial.plasmatherm.com/en/blog/tag/company-news) - [Etching Tools (14)](https://corial.plasmatherm.com/en/blog/tag/etching-tools) - [Featured Solutions (14)](https://corial.plasmatherm.com/en/blog/tag/featured-solutions) - [Deposition Tools (10)](https://corial.plasmatherm.com/en/blog/tag/deposition-tools) - [CORIAL products (3)](https://corial.plasmatherm.com/en/blog/tag/corial-products) - [Employee Spotlight (3)](https://corial.plasmatherm.com/en/blog/tag/employee-spotlight) - [Research and Development (3)](https://corial.plasmatherm.com/en/blog/tag/research-and-development) - [Events (2)](https://corial.plasmatherm.com/en/blog/tag/events) - [Customer Spotlight (1)](https://corial.plasmatherm.com/en/blog/tag/customer-spotlight) - [Wafer Singulation (1)](https://corial.plasmatherm.com/en/blog/tag/wafer-singulation) see all [![quote\>newsletter](https://no-cache.hubspot.com/cta/default/7547247/2be88541-9961-4fe9-b07c-314e5e653888.png)](https://cta-redirect.hubspot.com/cta/redirect/7547247/2be88541-9961-4fe9-b07c-314e5e653888) [![quote](https://no-cache.hubspot.com/cta/default/7547247/0ee740a6-9189-46b7-b114-011ce7f398c6.png)](https://cta-redirect.hubspot.com/cta/redirect/7547247/0ee740a6-9189-46b7-b114-011ce7f398c6) [![contact](https://no-cache.hubspot.com/cta/default/7547247/d30e55cc-6021-44b7-a53e-75407de513de.png)](https://cta-redirect.hubspot.com/cta/redirect/7547247/d30e55cc-6021-44b7-a53e-75407de513de) ![Corial](https://corial.plasmatherm.com/hubfs/raw_assets/public/CORIAL_May_2020/images/logo-white-1.png) - [ABOUT](https://corial.plasmatherm.com/en/about-corial) - [TECHNOLOGIES](https://corial.plasmatherm.com/en/technologies/plasma-technologies) - [BLOGS](https://corial.plasmatherm.com/en/blog) - [CONTACT US](https://corial.plasmatherm.com/en/contact-us) #### Follow us on - [LinkedIn](https://fr.linkedin.com/company/corial) - [Twitter](https://twitter.com/corial_company) - [Facebook](https://www.facebook.com/CORIALaplasmathermcompany) Copyright CORIAL 2023 – All rights reserved | [Legal information](https://corial.plasmatherm.com/en/about-corial/en/legal-information/) | [Credits](https://corial.plasmatherm.com/en/about-corial/en/credits/) - [![contact](https://no-cache.hubspot.com/cta/default/7547247/07a71f9a-0aeb-4a95-86c9-4a2dfd7285c2.png)](https://cta-redirect.hubspot.com/cta/redirect/7547247/07a71f9a-0aeb-4a95-86c9-4a2dfd7285c2)