BSTRACTThis paper summarizes our research related to Q-carbon and Q-BN and direct conversion of carbon into diamond and h-BN into c-BN. Synthesis and processing of these materials are accomplished by nanosecond laser melting and subsequent quenching of amorphous carbon and nanocrystalline h-BN. Depending upon the degree of undercooling

molten carbon (or h-BN) can be converted into Q-carbon (or Q-BN) or diamond (or c-BN). The primary focus here is on the outstanding properties of these materials

including

hardness

greater than diamond

ferromagnetism

p-

and

n-

type doping

NV nanodiamonds

high-temperature superconductivity in B-doped Q-carbon

enhanced field emission

superhard composite coatings

and future applications.

IMPACT STATEMENT

This research represents a fundamental breakthrough in the direct conversion of carbon into diamond at ambient temperatures and pressures in the air and their extraordinary properties.