[time-nuts] Better quartz crystals with single isotope ?

[Mark Sims]

Single isotope diamond is 50% better  thermal conductivity of normal diamond.   It has been  used in laser optics and thermal transfer applications (semiconductor heatsinks).   I think the highest reported thermal transfer rate used isotopically pure diamond etched with micro-fluidic channels fed with coolant.   GE makes the diamond material... it was developed as part of Reagan's Star Wars project.

Isotopically pure silicon has 60% better thermal conductivity than natural silicon.

Isotopically pure platinum has been used in RTD temperature sensors.