The original paper, fortunately linked in the article, is quite readable: https://www.nature.com/articles/s41567-019-0663-9 https://www.nature.com/articles/s41

The original paper, fortunately linked in the article, is quite readable: https://www.nature.com/articles/s41567-019-0663-9 https://www.nature.com/articles/s41567-019-0663-9 I was expecting it to discuss the largest species previously shown to demonstrate an interference pattern, but unfortunately there was none. Other points of note: Regarding the choice of molecule, and specifically fluorination: > An intense neutral beam of intact molecules is a prerequisite for our experiments, but soft neutral volatilization and post-ionization of complex molecules is an outstanding technical challenge. While matrix-assisted laser desorption and electrospray ionization are useful tools for molecular analysis, the charged beams they pro- duce are incompatible with the stringent dephasing requirements of interferometry. Continuous effusive thermal beams, on the other hand, suffer from thermal fragmentation for masses beyond a few kilodaltons. This can be overcome via fluoroalkyl-functionalization of the molecules, which adds mass, reduces the polarizability-to- mass ratio and increases volatility The group sees another factor of 10 increase in the ability to measure interference: > With advances in beam sources for biomolecules and metal clusters26,27, techniques to cool the particles below 80K (refs.28,29), and refined grating26 and imaging technologies30, our experiment is scalable and will push matter-wave interference and macroscopicity tests by another order of magnitude24 The Coriolis effect was corrected at least in part mechanically rather than purely computationally: > Compensation of the Coriolis effect is critical to obtaining high-visibility interference fringes in LUMI. By tilting the gratings, we introduce a gravitational deflection that opposes the Coriolis shift ...