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Thickness of the Ge 40 Se 60 /Si film on the silicon substrate as 34.5 nm, Thickness of the Ge 40 Se 60 /Si film on the oxidized silicon substrate as 33.6 nm, Thickness of SiO 2 (with n and k spectra of SiO 2 held fixed), and; n and k spectra, in 190–1000 nm range, of Ge 40 Se 60 /Si.
Not surprisingly, a combination of these two materials in the form of the yttria-alumina garnet has proven to be one of the top performers in the field. [2] In 1961, General Electric began selling transparent alumina Lucalox bulbs. [11] In 1966, GE announced a ceramic "transparent as glass", called Yttralox. [12]
The unusual compound Ge 6 Cl 16 has been prepared that contains the Ge 5 Cl 12 unit with a neopentane structure. [50] Germane (GeH 4) is a compound similar in structure to methane. Polygermanes—compounds that are similar to alkanes—with formula Ge n H 2n+2 containing up to five germanium atoms are known. [42]
Yttralox was marketed as being "transparent as glass", has a melting point twice as high, and transmits frequencies in the near infrared band as well as visible light. [ 4 ] [ 7 ] [ 8 ] However, it has little plasticity at high temperatures and low thermal conductivity , giving it a thermal shock performance little better than common glass.
WASHINGTON (Reuters) -The United States issued sanctions against a Russian judge on Tuesday for her role in the detention of human-rights activist Alexei Gorinov over his opposition to Russia's ...
In solid-state physics and solid-state chemistry, a band gap, also called a bandgap or energy gap, is an energy range in a solid where no electronic states exist. In graphs of the electronic band structure of solids, the band gap refers to the energy difference (often expressed in electronvolts ) between the top of the valence band and the ...
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