{"help":"Return the metadata of a dataset (package) and its resources. :param id: the id or name of the dataset :type id: string","success":true,"result":[{"id":"8b475fda-19bb-4415-8ed1-b4f4eaef4813","name":"formation-and-behaviour-plasma-spots-surface-titanium-film","title":"Formation and behaviour of plasma spots on the surface of titanium film","author_email":"bibinov@aept.rub.de","maintainer":"Research Data Repository","maintainer_email":"achim.vonkeudell@rub.de","license_title":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","notes":"\u003Cp\u003ENumerous studies have shown that dielectric barrier discharge (DBD) and DBD-like plasma jets\u003Cbr \/\u003E\ninteract with a treated surface in a complex manner. Eroded traces after treatment cannot be\u003Cbr \/\u003E\nexplained by conventional plasma-surface interaction theory. The mechanisms of a controlled\u003Cbr \/\u003E\nformation of these plasma objects is still unclear. In this work, the authors show that the\u003Cbr \/\u003E\nformation rate and characteristics of eroded traces, treating a titanium surface, can be controlled\u003Cbr \/\u003E\nby process design and the combination of materials used. A thin (0.45 \u00b5m) layer of titanium\u003Cbr \/\u003E\nfilm is deposited onto a glass substrate and is then treated in the effluent of a non-equilibrium\u003Cbr \/\u003E\natmospheric pressure plasma jet (N-APPJ) operated with argon or krypton flow. Plasma spots\u003Cbr \/\u003E\nwith diameters ranging from 100\u2013700 \u00b5m are observed using an intensified digital camera on\u003Cbr \/\u003E\nthe titanium film surface. These plasma objects are strongly inhomogeneous, forming a core\u003Cbr \/\u003E\nwith a very high current density and leave erosion holes with diameters of about 1 \u00b5m. By using\u003Cbr \/\u003E\nkrypton as a working gas, effective erosion of the titanium substrate can be shown, whereas by\u003Cbr \/\u003E\nusing argon no traces are detected. For the latter case, traces can be provoked by deposition of a\u003Cbr \/\u003E\nthin aluminum layer on top of the titanium substrate, by creation of artificial scratches or by an\u003Cbr \/\u003E\nadditional swirling flow around the discharge. Based on the experimental results presented in\u003Cbr \/\u003E\nthis and previous papers, it is assumed that plasma spots with dense cores are produced by an\u003Cbr \/\u003E\ninteraction of micro-vortices within the plasma channel and by the formation of an extremely\u003Cbr \/\u003E\nhigh axial magnetic field. This assumption is confirmed by destruction of the treated surface\u003Cbr \/\u003E\nmaterial, extraction of paramagnetic atoms and toroidal substrate heating, which is most likely\u003Cbr \/\u003E\ncaused by a helical current of the plasma spot.\u003C\/p\u003E\n","url":"https:\/\/rdpcidat.rub.de\/dataset\/formation-and-behaviour-plasma-spots-surface-titanium-film","state":"Active","log_message":"Edited by kd.","private":true,"revision_timestamp":"Mon, 11\/17\/2025 - 10:34","metadata_created":"Wed, 04\/20\/2022 - 13:40","metadata_modified":"Mon, 11\/17\/2025 - 10:34","creator_user_id":"97d4ca9e-d6a4-435e-b2fa-290a5ce8358c","type":"Dataset","resources":[{"id":"b84b8cbf-4e19-44ee-a51a-e0a2da1c27a6","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure_2_current_Ar.txt","description":"","format":"data","state":"Active","revision_timestamp":"Mon, 11\/17\/2025 - 10:34","name":"Figure_2_current_Ar","mimetype":"text\/plain","size":"1.25 MB","created":"Wed, 04\/20\/2022 - 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