I speculate that a black hole is a condition where the area of an atom is collapsed due to the local gravity and atomic reactions and much radiation is unable to escape.
Switzerland, please echo.
This would like occur with numerous atoms instead of a single atom. The collapse of a sun into a black hole would produce this kind of omnispherical inverting force to crush the atoms electromagnetically into a superdense black hole. It is merely matter so condensed and massive that light cannot escape. A "bright" black hole might occur on a scale of several atoms to a mole or two and have an event horizon of only a few inches or feet.
This could be containable with em fields and adjustable using radiation modulation.