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Dry etching refers to the removal of material, typically a masked pattern of semiconductor material, by exposing the material to a bombardment of ions (usually a plasma of reactive gases such as fluorocarbons, oxygen, chlorine, boron trichloride; sometimes with addition of nitrogen, argon, helium and other gases) that dislodge portions of the material from the exposed surface.
The region is the biggest high-tech manufacturing center in the United States. [74][75] The unemployment rate of the region was 9.4% in January 2009 and has decreased to a record low of 2.7% as of August 2019. [76] Silicon Valley received 41% of all U.S. venture investment in 2011, and 46% in 2012. [77]
Don Hoefler. Donald C. Hoefler (October 3, 1922 – April 15, 1986) was an American journalist, best known for using the term "Silicon Valley" for the first time in a news story. His friend Ralph Vaerst suggested the term for a series of articles entitled "Silicon Valley, USA" in the weekly trade newspaper Electronic News, starting on January ...
Deep reactive-ion etching. Deep reactive-ion etching (DRIE) is a special subclass of reactive-ion etching (RIE). It enables highly anisotropic etch process used to create deep penetration, steep-sided holes and trenches in wafers /substrates, typically with high aspect ratios. It was developed for microelectromechanical systems (MEMS), which ...
The Silicon Valley Historical Association was formed in 1991 and is located in Menlo Park, California. It publishes books, produces documentaries and records filmed histories of notable tech industry figures who have contributed to the development of the tech industry. The association's mission is to record the motivations, successes, failures ...
A wealthy Silicon Valley-backed campaign to build a green city for up to 400,000 people in the San Francisco Bay Area has submitted what it says are enough signatures to qualify the initiative for ...
The California Society of Etchers (CSE) was founded in San Francisco in December 1912 and announced in the San Francisco Chronicle on January 19, 1913 ("Etchers Form a State Organization", p. 27). Several sources cite an earlier 1911 date, such Marilyn S. Kushner's detailed chapter, "Genesis of the Twentieth-Century Print Club", although she ...
In 1980, their share of stocks was just 29%. Venture capital firms, the biggest funders of Silicon Valley startups, have grown from under $400 billion in assets in 2010 to nearly $4 trillion today ...