8.3.3 Reactive ion etching: chlorine/argon plasma etching of aluminium

In a reactive ion etch (RIE), a chemical reaction is used to weaken the bonding of the surface of the material and assist the sputtering process. This combines the high rate and selectivity of a gas-phase etch with the directionality of a sputter etch.

For example, consider aluminium etched anisotropically by a Cl2/Ar mixed-gas plasma, which etches at up to 1 μm min−1:

  • Power pumped into the plasma breaks the gases up, rel
    Author(s): The Open University

    License information
    Related content

    Copyright © 2016 The Open University

The Story of the Three Trees
Inspirational, religious story. (10:34)
Author(s): No creator set

License information
Related content

Ignite NCAR VII - The Future of Colorado's Water, a Seuss-like Tale - Jeff Lukas
CIRES' Jeff Lukas presents the state of Colorado's water and future projections from the Colorado Water Assessment using a Seuss-like rhyme that brings cleverness and smiles despite the subject's seriousness. (05:06)
Author(s): No creator set

License information
Related content

4.6 From Enlightenment to Romantic thinking

The Enlightenment had typically expressed, on the one hand, the soul and imagination and, on the other, reason and intelligence in terms of incompatible opposites. Not so Delacroix:

What are the soul and the intelligence when separated? The pleasure of naming and classifying is the fatal thing about men of learning. They are always overreaching themselves and spoiling their game in the eyes of those easy-going, fai
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

7.3 Summary of Section 7

  • The historian Linda Colley locates the birth of ‘Britain’ after 1707. She mentions three main factors that contributed to establishing the British nation: war, religion and the prospect of material advantage.

  • The creation of the UK was not free from conflict, resistance, war and military intervention.

  • The British Empire generated a unique opportunity for most UK nations to participate and enjoy some of the benefits it brough
    Author(s): The Open University

    License information
    Related content

    Copyright © 2014 The Open University

Pronounce the Muscles (Part 3)
Video has a list of major muscle names, beginning with letters O through R. The narrator pronounces the muscle names, and then allows the student to practice pronunciation. Words are a little blurry. Grades 9-12. 2:48 min.
Author(s): No creator set

License information
Related content

Charles Ives Holiday Symphony
Coming of age at the dawn of the twentieth century, Charles Ives saw the halcyon days of his youth fading fast. Not willing to let them go, he invented a striking new musical language to enshrine the feelings and ideals of a simpler time. But many, shocked by passages like the “fireworks” in ‘Fourth of July,’ found his new-fangled methods at odds with the memories he was trying to preserve. Did Ives go too far? Or did he succeed in turning his memories into music?
Author(s): No creator set

License information
Related content

Corruption in Business and Government
This video is accompanied by text. "In the decades between the end of the Civil War and the turn of the twentieth century, new technologies, cheap immigrant labor, maturing methods of industrialization, and a mechanized, streamlined transportation system of railroads and steam-powered ships proved a formula for astoundingly rapid growth in the business sector. Government, however, could not keep pace with these changes. Governments were naive about business and the ways that individuals and comp
Author(s): No creator set

License information
Related content

2.2 Schubert and Johann Michael Vogl

By 1825 Schubert's painter friend Moritz von Schwind was reporting, ‘There is a Schubertiad at Enderes's each week – that is to say, Vogl sings’ (quoted in Deutsch, 1946, p. 401). Schwind names seven regular male members of the group, so even allowing for wives and other unnamed friends it was quite a small gathering. Another report of a Schubertiad at Enderes's the following year mentions that ‘more than 20 people have been asked’ (quoted in Deutsch, 1946, p. 531), and several othe
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

1.1.3 Searching for information on society

How well does the following statement match what you do when you begin a new search for information?

Before I begin a new search for information [maybe for an assignment, or to help you choose your next holiday destination], I spend some time thinking about what I already know, what the gaps in my knowledge are, and the best types of information to meet my needs.

    Author(s): The Open University

    License information
    Related content

    Copyright © 2016 The Open University

iJustine Introduces Microsoft Imagine: Break Into Code!

Microsoft Imagine introduces the Break Into Code challenge! It's a beginner level challenge that will get students excited about coding even if they don't have any previous experience. We've teamed up with Microsoft Research's TouchDevelop to get students of all ages started with a simple, easy to fo
Author(s): thratchen

License information
Related content

Rights not set

1 Information and communication

This Key Skills Assessment Course offers an opportunity for you to select and prepare work that demonstrates your key skills in the area of communication.

This course provides you with advice and information on how to go about presenting your key skills work as a portfolio.

In presenting work that demonstrates your key skills you are taking the initiative to show that you can develop and improve a particular set of skills, and are able to use your skills more generally in your st
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Microsoft Campus Tours - Inside the Channel 9 Studio | Microsoft Campus Tours

In this episode of Microsoft Campus Tours we take you inside the Channel 9 studio where the majority of Channel 9 homepage content is shot, edited and live streamed. In 2011 we had Microsoft Campus Tours - Channel 9 Behind The Scenes where we took a sneak peek inside the Channel 9 studios. Four years later, we are back again to show you the latest gear, upgrade
Author(s): Larry Larsen, Golnaz, Kaitlin McKinnon

License information
Related content

Rights not set

Learning outcomes

After studying this course, you should be able to:

  • understand the arithmetical properties of the rational and real numbers

  • understand the definition of a complex number

  • perform arithmetical operations with complex numbers

  • explain the terms modular addition and modular multiplication

  • explain the meanings of a relation defined on a set, an equivalent relation and a partition of a set.


Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Can Photography change the course of history?
William Jarvis
An essay on how many photographers have changed the course of history through their work.
Some Rights Reserved

Author(s): No creator set

License information
Related content

Simon Schama
Bill Moyers speaks with historian Simon Schama, who spent months traveling across America in the run-up to an historic election to discover what events in our nation's past can tell us about how we live today and what's in store for the future. Then, find out more about the Born Again American film and project - and get back to basics by reviewing America's founding documents. And, Bill Moyers responds to viewer feedback about Gaza.Author(s): No creator set

License information
Related content

Brain on Drugs (modern)
Author(s): No creator set

License information
Related content

Hallo jij daar : Informatieve tekst over kinderrechten
hallo_jij_daar.png

In deze informatieve tekst vind je enkele belangrijke feiten over kinderrechten:

  • de geschiedenis van het kinderrechtenverdrag;
  • kinderrechten kan je verdelen in drie groepen;
  • vier belangrijke artikels in het kinderrechtenverdrag.

Author(s): No creator set

License information
Related content

Hollande, Merkel, Rajoy seek to repatriate bodies of plane crash dead
The leaders of Germany, France and Spain say they're working together to find and repatriate the remains of those killed in the Germanwings Airbus A320 crash in the French Alps. Rough Cut (no reporter narration). Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics includ
Author(s): No creator set

License information
Related content

Germanwings black box reveals "usable audio data file"
Investigators have extracted cockpit voice recordings from one of the black boxes of the Airbus plane that smashed into the Alps and say they expect to have a read-out of the content within days. Rough Cut (No reporter narration) Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and acr
Author(s): No creator set

License information
Related content