The chip that proves that Nanox is a fraud

Nanox tweets how its "small" chip is changing 100 years.  That would be quite a feat, if the chip were not fake.  But it is easy to see that it is fake.

 

Let's magnify:

The things in the red ovals are either defects or large specks of dust (which should not exist in a clean room).  The chip is not functional.

Why doesn't Nanox have a better picture of the chip?  Nanox has no access to facilities to manufacture the chip, contrary to the false claims in its Prospectus.  Specifically, Nanox claims to have its own equipment placed in clean rooms at the University of Tokyo.  However, there is no equipment that belongs to Nanox there.  Moreover, the University of Tokyo prohibits any commercial use of its clean room facilities, which it rents per day to anyone who is doing academic research. 

The proposed chip, even if manufactured without defects, changes nothing.  The proposed chip requires much higher voltage than a corresponding filament, first introduced by GE in 1913.  The proposed x-ray tube with such a chip in the cathode generates just as much heat as a regular tube using a filament (since 99% of the heat in both tubes is generated at the anode and 99% of the energy used by both tubes is wasted as heat).  Switching speed is the same as a regular tube with a grid.

Update:  Another view of the chip, from a snapshot of the RSNA 2020 "Nanox - Technology & Vision" video (1:02).