A Simple Key For Germanium Unveiled
A Simple Key For Germanium Unveiled
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Acest element nu are o funcție essentială pentru organisme, iar unii compuși organici ai germaniului au fost testați ca și posibile produse farmaceutice, însă fileără nici un rezultat. Very similar cu siliciul și aluminiul, compușii germanici tind să fie insolubili în apă, având astfel un potențial scăzut de toxicitate orală.
Germanium crystals are grown and shaped into lenses and window for IR or thermal imaging optical systems. About 50 % of all these methods, that are intensely dependent upon armed service demand, incorporate germanium.
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 ingredient 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 a hundred ppm.
As soon as silicon took more than, it might seem that germanium might be relegated towards the backwaters of chemical obscurity being an also-ran that was not worth making use of.
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Zone-refined germanium can further be developed into crystals, which might be sliced into thin items for use click here in semiconductors and optical lenses.
is To place a long way amongst carriers inside the channel and the higher-k product. This is highly fascinating considering the fact that higher-k elements are actually proven to strongly impression channel mobility regardless if not in immediate connection with it
Getting a buffer composed of higher bandgap material will help make sure that overall performance characteristics of the presented unit within an array are as much as possible independent with the on/off states of adjacent gadgets, or that is it electrically isolated from them. A pure Ge based buffer instantly on Si can be envisioned to acquire very poor gadget isolation features because of the very low bandgap of Ge. This alone just isn't automatically mark versus the immediate epitaxy technique due to the fact it may be combined with commercially readily available silicon-on-insulator (SOI) substrates to further improve device isolation, Despite the fact that This may also have to have that the buffer be rather skinny to aid etching all the way down to the buried oxide.
Specific warmth capacity is the quantity of energy needed to alter the temperature of the kilogram of a compound by one K.
A gradual turn from microelectronics to nanoelectronics and relevant miniaturization of constitutive elements of electronic gadgets designate new troubles and demand from customers alternate solutions in modification and control of Homes. Whilst, moderate variants in temperature may lead to amazing consequences, e.g., to abrupt and reversible p–n inversion of electrical conduction type observed in Ag10Te4Br3 semiconductor at in close proximity to 375 K19, much more classy external stimuli, such as controlled stresses would superior fit the requests of micro- and nanoelectronics.
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