Is heat transfer to samples greater in carbon fiber rotors than metallic rotors at high g-forces?
No! Heat transfer to samples in carbon fiber rotors, due to air friction, is less in carbon fiber rotors than in metallic rotors. Carbon fiber materials are insulators of temperature while metallic materials are conductors of temperature. Additionally the carbon fiber rotors will hold a constant temperature much longer than metallic rotors. The Centrifuge refrigeration system will therefore, cycle less when carbon fiber rotors are used than when metallic rotors are used.