Exploratory Experiments on Surface Coating with ElectrosprayIons

本研究的目的是通过在各种衬底上沉积来自电喷源的离子物种来制备和表征表面层。这些物种是通过静电分散母体分子的溶液而产生的，这些溶液是带电液滴的细小喷雾或雾进入浴气中。液滴的蒸发增加了它们的表面电荷密度，因此产生的电场最终变得足够小，足以将离子解吸到环境气体中。这些离子可以包括几乎任何与阳离子或阴离子聚集的溶质物种，分子量可高达至少40,000，每个离子的电荷多达45个或更多。它们将被沉积在介质衬底上(带有下面的导电电极)，以产生带电或中和的表面(通过同时或随后的相反符号的离子通量)。它们还将被沉积在导电基材上，以产生电中性物种的涂层。将对所得新型表面的物理和化学性质进行表征。

The purpose of this research is to prepare and characterize surface layers by depositing ionic species from an electrospray source on various kinds of substrates. These species are produced by electrostatically dispersing solutions of parent molecules as a fine spray or fog of charged droplets into a bath gas. Evaporation of the droplets increases their surface charge density so that the resulting electric field ultimately becomes small enough to desorb ions into the ambient gas. These ions can comprise almost any solute species in aggregation with cations or anions and can have molecular weights up to at least 40,000 with as many as 45 or more charges per ion. They will be deposited on dielectric substrates (with an underlying conducting electrode) to produce surfaces that are either charged or neutralized (by a simultaneous or subsequent flux of ions of opposite sign. They will also be deposited on conducting substrates to produce coatings of electrically neutral species. The physical and chemical properties of the resulting novel surfaces will be characterized.