Abstract: Apparatus, methods, and other embodiments associated with heteronuclear nuclear magnetic resonance fingerprinting (NMRfp) are described. One example apparatus includes individually controllable radio frequency transmission coils configured to apply varying NMRfp RF excitations to a sample. The NMR apparatus may apply excitations in parallel. The excitations cause different nuclei to produce different signal evolutions. Different pairs of nuclei may produce different signal evolutions depending on quantum correlations between the types of nuclei.