Germanium - An Overview
Germanium - An Overview
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Deoarece acest nou element prezenta anumite similarități cu arsenul și stibiul, se avea în vedere plasarea acestuia la locul său potrivit, dar similaritățile cu "ekasilicon" a confirmat acel loc.
Particular warmth capacity is the level of Electrical power required to alter the temperature of a kilogram of the material by 1 K.
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Dampness-safety AR and BBAR coatings are offered for several wavelengths or wavelength ranges in NaCl’s transmission selection.
When there should be some organic and natural germanium products and solutions obtainable for invest in in the United States, proof suggests that germanium could possibly be much more menace than wonder.
(The name germanium derives from your Latin phrase Germania [Germany] and was supplied towards the aspect by Winkler.) Germanium didn't grow to be economically significant right up until right after 1945, when its Qualities as a semiconductor have been identified as currently being of worth in electronics. Many other substances now are also applied as semiconductors, but germanium remains of Most important value while in the manufacture of transistors and of elements for equipment which include rectifiers and photocells.
CAS quantity The Chemical get more info Abstracts Services registry amount is a novel identifier of a certain chemical, made to protect against confusion arising from distinctive languages and naming systems.
Desi germaniul este un element prezent in toate organismele vii, acesta nu prezinta o functie structurala (cum prezinta siliciul in cadrul unor exoschelete) si nu a fost dovedit ca fiind un aspect esential pentru plante sau animale[69]. Sax [70] mentioneaza cum germaniul are un caracter scazut al toxicitatii, insa GeH4 are un caracter hemolitic, fiind periculos in cantitati peste 100 ppm.
Metamaterials are artificial materials engineered to own Homes not found in Obviously taking place substances. These materials are made to govern electromagnetic waves in means that aren't possible with common materials.
We use hafnium nitride (HfNx) to confirm these two solutions, plus the experimental and theoretical effects are enjoyable, which proves that our new approach is effective incredibly and simplistically.
One crystals of germanium are developed in an environment of nitrogen or helium with the molten material. These are typically then remodeled into semiconductors by being doped (infused) with electron donor or acceptor atoms, possibly by incorporating the impurities from the melt in the course of progress on the crystal or by diffusing the impurities in the crystal immediately after it's been fashioned.
• Optical-quality cesium iodide transmits with the UV to the significantly-infrared; it's the widest transmission band of each of the readily available IR materials.
Within an alternate technique, this technique is together precisely the same strains on the nujol mull apart from as an alternative to the suspending medium being mineral oil, the suspending medium is actually a salt. The stable is ground into a great powder using an agate mortar and pestle by having an amount of the suspending salt.
This material is incredibly sensitive to thermal shock. Never use with remedies of ammonium salts. Insoluble in water; has very good resistance to fluorine and fluorides.