Recent content by Patrick Underwood

Modern batteries use double-sided anode and cathodes for greater energy density. Series wiring of batteries is typically accomplished by connecting the anode of one cell to the cathode of another. However, can series be accomplished by stacking double-sided anode and cathode alternatingly with...

Both the cz (Czochralski Process), and Float-zone refining of silicon require an inert atmosphere, usually argon. How pure does the argon atmosphere have to be? How high of a vacuum has to be pulled before releasing argon into the tank?

Thank you trurle for the reply. See that's what I was also thinking... When you say high-resistance substrates I assume you mean electrical resistivity. I do see now mathematically that if the resistivity is higher it would require a higher frequency. Yeah...so we have a mathematical error...

I’m using an inductive heater to try to melt some 99.85% polycrystalline silicon, as would occur in the Czochralski process, but the silicon workpiece is not melting let alone even getting hot. The silicon workpiece is about the size of a playing dice. It becomes conductive at 200 F and becomes...

Thank you Windadct for the reply. The silicon is mostly conductive at room temp, but doesn't become fully conductive until 300 C. (I ran the test again). I used a stronger torch for preheating; I was able to get the silicon workpiece to glow red, but the inductive heater still isn't taking over...

I’m using a zvs inductive heater to try to melt some 99.85% polycrystalline silicon, as would occur in the Czochralski process, but the silicon workpiece is not melting let alone even getting hot. The silicon workpiece is about the size of a playing dice, and becomes fully conductive after...