{"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":"9d37e5a9-84e3-4943-9acc-31afbde8552a","name":"experimental-verification-laminar-gas-flows-and-localized-plasma-induced-perturbations","title":"Experimental Verification of Laminar Gas Flows and Localized Plasma-Induced Perturbations in a Microcavity Plasma Array","author_email":"david.steuer@rub.de","maintainer":"Research Data Repository","maintainer_email":"achim.vonkeudell@rub.de","notes":"\u003Cp\u003EDielectric barrier discharges (DBDs), and in particular microcavity plasma arrays (MCPAs), represent a promising reactor platform for plasma-catalytic studies, as they allow plasma generation directly at catalytic surfaces, thereby providing direct access to the investigation of plasma\u2013surface interactions. In addition to fundamental plasma parameters such as electric fields and species densities, the gas flow through the reactor plays a crucial role in the process. It directly determines the effective treatment time and volume, while the underlying flow dynamics govern the transport of plasma-generated species such as reactive molecules and atoms. Besides the reactor geometry, the discharge itself may influence the flow through induced forces, potentially generating vortices and enhancing mixing, which could improve conversion efficiency. While complex flow fields may be desirable for maximizing process efficiency, research reactors such as the MCPA benefit from predictable transport conditions when the primary objective is the study of plasma\u2013surface interactions. In this study, the flow dynamics within an MCPA reactor are investigated using particle image velocimetry (PIV) in helium. Spatially and temporally resolved measurements are used to analyze the influence of the plasma discharge on the gas flow. The results show that the discharge can exert a measurable influence on the flow field; however, this effect is spatially confined to a region within approximately 0.5 mm distance from the electrode and is most pronounced during the ignition phase of the discharge. During steady-state operation, the plasma has no significant impact on the overall flow behavior. Under these conditions, the velocity field can be described by a classical laminar Poiseuille profile.\u003C\/p\u003E\n","url":"https:\/\/rdpcidat.rub.de\/dataset\/experimental-verification-laminar-gas-flows-and-localized-plasma-induced-perturbations","state":"Active","log_message":"Edited by SSchuettler.","private":true,"revision_timestamp":"Thu, 05\/28\/2026 - 10:46","metadata_created":"Wed, 05\/06\/2026 - 13:57","metadata_modified":"Thu, 05\/28\/2026 - 10:46","creator_user_id":"91284078-6b39-44ab-8d2e-b3961249cf70","type":"Dataset","resources":[{"id":"12eacf18-dcbd-4874-bb1f-7eb20d3e3633","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure2_1.csv","description":"\u003Cp\u003ETemperature development of the grounded electrode (magnet) as a function of the discharge operating time and the applied gas flow rate. While most gas flow rates show similar dynamics, at 2000 sccm a gas cooling effect is observed.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Thu, 05\/28\/2026 - 10:47","name":"Figure2","mimetype":"text\/csv","size":"416.75 KB","created":"Wed, 05\/06\/2026 - 14:08","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Thu, 05\/28\/2026 - 10:47"},{"id":"01dec7a2-2dc1-4291-9d29-545b3e83c623","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure5_0.csv","description":"\u003Cp\u003EAbsolute value of the vorticity as a function of the gas flow rate for both plasma-on and plasma-off conditions. The displayed values are spatially averaged over a rectangular region extending across the full width of the measurement area, approximately 1 mm in height and located about 0.25 mm above the surface (to avoid measuring in an area where aerosol is vanishing due to thermal convection).\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Thu, 05\/28\/2026 - 10:46","name":"Figure 5","mimetype":"text\/csv","size":"442 bytes","created":"Wed, 05\/06\/2026 - 14:09","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Thu, 05\/28\/2026 - 10:46"},{"id":"be88abfa-d7dc-4561-a11c-5a55d1b859db","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure6_0.csv","description":"\u003Cp\u003Eemporal evolution of the vertical velocity component spatially averaged in the gas domain directly above the cavities as a function of operating time and external gas flow rate. The displayed values are spatially averaged over a rectangular region extending across the full width of the measurement area, approximately 1mm in height and located about 0.25mm above the surface (to avoid measuring in an area where aersool is vanishing due to thermal convection).\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Thu, 05\/28\/2026 - 10:46","name":"Figure 6","mimetype":"text\/csv","size":"3.35 MB","created":"Wed, 05\/06\/2026 - 14:11","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Thu, 05\/28\/2026 - 10:46"},{"id":"ae8fa2fd-1f71-43d8-8481-bccb45875c78","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure3_0.zip","description":"\u003Cp\u003EStreamline representation of the time-averaged flow field for a) the deactivated array and b) the operating array for an applied gas flow rate of 250sccm. c) shows a digitally magnified view (spatially deformed) of the array surface region while the array is operating, highlighting the near-surface flow structures. The flow fields are averaged over 1000 images at a camera recording frequency of 5297 Hz. For flow calculation close to the array surface, the array was at room temperature in this special case, as thermal convection would induce buoyancy of the seeding particles and prevent meaningful evaluation in this zone.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Thu, 05\/28\/2026 - 10:46","name":"Figure 3","mimetype":"application\/zip","size":"2.16 MB","created":"Wed, 05\/06\/2026 - 14:14","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Thu, 05\/28\/2026 - 10:46"},{"id":"4b003657-ce94-4578-88b9-22ef7e0ed8eb","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure4_1.zip","description":"\u003Cp\u003EVertical velocity component for a total gas flow of a) 250sccm and b) 2000sccm as a function of the vertical position for both plasma-on (\u0022on\u0022) and plasma-off (\u0022off\u0022) conditions. A basic one-dimensional steady laminar flow model can explain the profiles by an increase in temperature, but shows slight deviations at the edges.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Thu, 05\/28\/2026 - 10:46","name":"Figure 4","mimetype":"application\/zip","size":"17.62 KB","created":"Wed, 05\/06\/2026 - 14:15","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Thu, 05\/28\/2026 - 10:46"},{"id":"d4ac4c6b-e356-443b-9532-5a188ff7bc30","revision_id":"","url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/Figure7_0.zip","description":"\u003Cp\u003ENormalized frequency spectra of the space-averaged horizontal velocity component near the array\u0027s surface a) and temporal plasma emission measured with a photomultiplier tube (PMT) b). Two discharge pulse repetition frequencies were applied for both Fourier analyses: 1.0 kHz and 1.1 kHz.\u003C\/p\u003E\n","format":"csv","state":"Active","revision_timestamp":"Thu, 05\/28\/2026 - 10:46","name":"Figure 7","mimetype":"application\/zip","size":"591.94 KB","created":"Wed, 05\/06\/2026 - 14:16","resource_group_id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","last_modified":"Date changed  Thu, 05\/28\/2026 - 10:46"}],"tags":[{"id":"23fee867-bed4-469b-ba12-766621690038","vocabulary_id":"2","name":"A6"},{"id":"ec7dcc6e-8d82-4aa5-8f31-8ce85bd390b5","vocabulary_id":"2","name":"A5"},{"id":"5c04e851-0362-4d70-9946-cbdf1227d6f5","vocabulary_id":"2","name":"A7"},{"id":"202d3dfa-ee56-450f-a3e8-25aba4e9670b","vocabulary_id":"2","name":"PIV"},{"id":"0aad9071-ba5c-43f2-b2df-cc066152c5f8","vocabulary_id":"2","name":"dielectric barrier discharge"},{"id":"d44bdd04-45e4-4f86-b721-740db562822b","vocabulary_id":"2","name":"micro cavity plasma array"},{"id":"86ed7b22-f1c6-45b9-aaa4-d13128d4740b","vocabulary_id":"2","name":"microplasma arrays"}],"groups":[{"description":"\u003Cp\u003EThe research will focus on the fundamentals of non-equilibrium plasmas and their interaction with the surrounding media such as solids or liquids using spectroscopic techniques.\u003C\/p\u003E\n","id":"ee65a14f-0fc2-40e9-a4ba-e85030fe5102","image_display_url":"https:\/\/rdpcidat.rub.de\/sites\/default\/files\/logorub_weiss_0.gif","title":"PIP","name":"group\/pip"}]}]}