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Question:

Why does the copper oxide(CuO) block act as a pure semiconductor when chilled liquid nitrogen is poured on it?

Generally CuO is not semiconductor by nature. Please give clear explanation about that.

Answer:

Just as resistance of a conductor goes up when it is heated, it goes down when cooled. A copper wire in winter can carry more current than a copper wire in the desert in summer. Nitrogen is a cryogenic material, it liquidizes at -196 C. Oxygen liquidizes at -183 C. When CuO is at this temperature the atoms actually shrink and the atomic radius is at it's smallest possible size.The oxygen even shrinks more. When the radius is small, the electors in the shells travel in a tighter orbit and an electrical induction that occurs when a current is applied to the cell transfers it's charge from atom to atom more efficiently than at room temperatures. Think of it like this. If you had a 1 foot long solid copper bar and you heated one end with a torch you would fill the heat coming uo the bar fairly rapidly. But if you stretched the copper out a little and made it a little spongy , the rate of heat transfer would go way down because the heat would have to take a longer path top reach your hand. Same thing with the copper oxide. The electricity has to take a longer path to travel thru it. When you put liquid N2 on it, it shortens the path between the atoms and makes it transfer more charge than at room temp The electricity in effect can jump from atom to atom quicker (and they are closer to each other) than at room temp where the electricity has to go thru a maze between the oxygen and copper atoms to traverse the CuO
In sense, technically, we are living, organic computers, but still living beings that can make up thoughts, like an AI(artificial intelligence). Their has to be no intelligent design, their is none, we were created by chance, surely we could have been created billions of years down the road from the beginning of time? Give chance time to work, and it will, in strange, fascinating way i hope we see hundreds of years from now.

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