Helium mediated deposition on the TIO2(110) surface from first-principles

TL;DRAbstract

Helium droplets serve not only as a cryogetic matrix for high-resolution molecular spectroscopy [1]. This way, very recent experimental measurements [2] have shown that helium droplets can act as carriers for the “soft-landing” deposition of catalytic and photocatalytic species, formed inside the droplets, on the surface of different substrates. The development of these soft-landing techniques is very important in many areas such the controlled synthesis of nano-structured metal/TiO2 photocatalysts (e.g., to optimize the separation between photo-generated hole and electron carriers). A microscopic understanding of these processes requires, at a first step, first-principle simulations of the helium droplet collision dynamics at impact with the surface. These theoretical studies face, at least, two challenges: the proper description of long-range dynamical correlation (dispersion) effects in extended systems (e.g., by using embedded cluster modeling), and the application of a quantum-mec

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