We are digging at the atomic length-scale to enable you to covert energies
Can't think of what is of use...
Here are some examples.
<Clean energy production>
Piezoelectricity is one of the least explored energy harvesting. However, it is a potential route to scavenge energy for implantable biomedical devices.
Quantum wells are widely used for single-photon emission and single-photon detectors in quantum optoelectronics. The modern bright displays uses quantum-dot light emitting diodes aka QLED displays for pure basic colours.
Vertically aligned defect engineered ZnO nanorods
Micrometer wide nanometric ZnO flakes grown on surface.