carbon allotrope
aggregated carbon nanorods
SIO_010790
aggregate of carbon nanorods is an allotrope of carbon considered to be the least compressible material known, as measured by its isothermal bulk modulus; aggregated diamond nanorods have a modulus of 491 gigapascals (GPa), while a conventional diamond has a modulus of 442 GPa. ADNRs are also 0.3% denser than regular diamond.