  We report the design and implementation of multiple Tesla type micro valves
in the target delivery system of a reaction microscope (ReMi) to study gas
phase structural dynamics of complex polyatomic molecules, when no delivery
system currently exists that can deliver dense enough molecular jets of neutral
complex molecules without ionizing or exciting the target. We show, the Tesla
valves provide an efficient unidirectional flow of the cis-stilbene molecules
into the ReMi. We demonstrate using a bubbler with Tesla valves an
order-of-magnitude increase in the detected stilbene molecular ion signal
following the strong-field tunnel ionization (SFTI), compared to conventional
bubbler without any Tesla valves. Our results for the first time, opens the
door for studying large, complex neutral molecules in the gas-phase with low
vapour pressures in future ultrafast studies.
