New and unexpected observations often lead to new understanding; hence, new ways to measure are critically important. IRAstro proposes new instrumentation, based on SNSPD arrays that will enable uniquely novel observations. We tailor this approach to astrochemistry, focusing on infrared spectroscopy; furthermore, due to the inhomogeneous character of interstellar ices, we specifically target infrared spectroscopy of single molecules. Of course, such observations must be interpreted. Successful first-principles simulations make it possible to explain observations on a fundamental level and to develop simple models that can be employed in astrochemistry.
This strategy requires the expertise of four groups: Wodtke (Chemical Physics at Surfaces), Hornekær (Astrochemistry and STM) and Saalfrank (Theoretical Quantum Dynamics). Wodtke enjoys a longstanding collaboration with Varun Verma (Electrical Engineering and Nanoscience). Together, they were the first to implement SNSPDs in chemical physics. Verma joins the synergy team via a subcontract. Leveraging the experience of the Wodtke and Verma groups, we will develop an SNSPD-array based spectrometer and install it in an STM in the Hornekær group for single molecule mid-IR spectroscopy. These new and unique measurement methods will then lead to observations that inspire new understanding through quantum dynamical models developed in the Saalfrank group.
