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View article: Fundamental Rovibrational Excitation in Co2 Low‐Temperature Plasma in the Presence of Common Impurities
Fundamental Rovibrational Excitation in Co2 Low‐Temperature Plasma in the Presence of Common Impurities Open
The interactions in plasma recycling are simplified by limiting the excitation of mixtures with or to rovibrations in a low‐temperature glow discharge. In situ infra‐red absorption spectroscopy measures rovibrational temperature trends, an…
View article: Influence of energy transfer processes on the rovibrational characteristics of CO2 in low-temperature conversion plasma with Ar and He admixture
Influence of energy transfer processes on the rovibrational characteristics of CO2 in low-temperature conversion plasma with Ar and He admixture Open
The influence of argon and helium on the rovibrational kinetics of carbon dioxide (CO2) and CO in low-temperature conversion plasma is investigated. With this objective, a combined experimental and computational study is conducted, applyin…
View article: Dual-comb spectroscopy of ammonia formation in non-thermal plasmas
Dual-comb spectroscopy of ammonia formation in non-thermal plasmas Open
Plasma-activated chemical transformations promise the efficient synthesis of salient chemical products. However, the reaction pathways that lead to desirable products are often unknown, and key quantum-state-resolved information regarding …
View article: Nanosecond repetitively pulsed plasmas with MHz bursts for CO<sub>2</sub> dissociation
Nanosecond repetitively pulsed plasmas with MHz bursts for CO<sub>2</sub> dissociation Open
A novel pulsed power source capable of nanosecond pulses with burst frequencies up to 1 MHz is employed to create atmospheric pressure pulsed plasma in pure CO 2 gas. The short bursts contain up to four nanosecond pulses. The CO 2 conversi…
View article: Dual-comb Spectroscopy of Ammonia Formation in Non-thermal Plasmas
Dual-comb Spectroscopy of Ammonia Formation in Non-thermal Plasmas Open
Plasma-activated chemical transformations promise the efficient synthesis of salient chemical products. However, the reaction pathways that lead to desirable products are often unknown, and key quantum-state-resolved information regarding …
View article: The role of the number of filaments in the dissociation of CO<sub>2</sub> in dielectric barrier discharges
The role of the number of filaments in the dissociation of CO<sub>2</sub> in dielectric barrier discharges Open
An experimental investigation of the dissociation of CO 2 in a symmetric pin-to-pin dielectric barrier discharge (DBD) is presented. The reactor geometry allows for an accurate control of the number of filaments (microdischarges) and is us…
View article: Influence of oxygen on the ro-vibrational kinetics of a non-equilibrium discharge in CO<sub>2</sub>–O<sub>2</sub> mixtures
Influence of oxygen on the ro-vibrational kinetics of a non-equilibrium discharge in CO<sub>2</sub>–O<sub>2</sub> mixtures Open
Storing excess renewable energy in hydrocarbons produced from CO 2 potentially solves the intermittency issue of renewable energy sources in a green manner. The required reduction of CO 2 to CO can be efficiently accomplished with non-equi…
View article: Crosstalk-Free Excitation Scheme for Quantitative OH Laser-Induced Fluorescence in Environments Containing Excited CO
Crosstalk-Free Excitation Scheme for Quantitative OH Laser-Induced Fluorescence in Environments Containing Excited CO Open
Spectral overlap in the single-photon laser-induced fluorescence between the 3064 Å system of OH and the third positive system of CO is detected in a highly-excited environment, namely, a CO 2 -H 2 O plasma. The overlap is distorting excit…
View article: Absolute OH density measurements in a CO<sub>2</sub>–H<sub>2</sub>O glow discharge by laser-induced fluorescence spectroscopy
Absolute OH density measurements in a CO<sub>2</sub>–H<sub>2</sub>O glow discharge by laser-induced fluorescence spectroscopy Open
Time-resolved absolute OH density measurements in a millisecond-pulsed DC glow discharge from carbon dioxide with water admixture, by laser-induced fluorescence (LIF) spectroscopy, are presented. For this purpose, a novel technique is sugg…
View article: Innovative remote plasma source for atomic layer deposition for GaN devices
Innovative remote plasma source for atomic layer deposition for GaN devices Open
High-quality dielectric films could enable GaN normally off high-electron-mobility transistors (HEMTs). Plasma atomic layer deposition (ALD) is known to allow for controlled high-quality thin-film deposition, and in order to not exceed ene…
View article: Foundations of optical diagnostics in low-temperature plasmas
Foundations of optical diagnostics in low-temperature plasmas Open
Over the past few decades many diagnostics have been developed to study the non-equilibrium nature of plasma. These developments have given experimentalists the possibility to measure in situ molecular and atomic densities, electron and io…
View article: Absolute CO number densities measured using TALIF in a non-thermal plasma environment
Absolute CO number densities measured using TALIF in a non-thermal plasma environment Open
We report first measurements of time-resolved absolute CO number densities and rotational temperatures in a non-thermal CO 2 plasma environment using TALIF with a nanosecond pulsed laser. Two-photon excitation spectra from the B 1Σ+(v′ = 0…
View article: Infrared and optical emission spectroscopy study of atmospheric pressure plasma-enhanced spatial ALD of Al2O3
Infrared and optical emission spectroscopy study of atmospheric pressure plasma-enhanced spatial ALD of Al2O3 Open
Atmospheric-pressure Plasma-Enhanced spatial Atomic Layer Deposition (PE-s-ALD) is a high-throughput technique for synthesizing thin films at low temperatures for large area applications. The spatial separation of the ALD half-reactions an…
View article: Infrared and Optical Emission Spectroscopy Study of the Surface Chemistry in Atmospheric-Pressure Plasma-Enhanced Spatial ALD of Al<sub>2</sub>O<sub>3</sub>
Infrared and Optical Emission Spectroscopy Study of the Surface Chemistry in Atmospheric-Pressure Plasma-Enhanced Spatial ALD of Al<sub>2</sub>O<sub>3</sub> Open
Atmospheric-pressure plasma-enhanced spatial atomic layer deposition (PE-s-ALD) is an emerging high-throughput technique used to deposit thin films at low temperatures on large-area substrates. The spatial separation of the ALD half-reacti…
View article: Does virtual reality help students learn to use optical measurement techniques
Does virtual reality help students learn to use optical measurement techniques Open
Virtual Reality has been used in the course 'Optical diagnostics: techniques and applications' at the Applied Physics department of the Eindhoven University of Technology, to allow students to perform experiments in a laboratory without be…
View article: How dielectric, metallic and liquid targets influence the evolution of electron properties in a pulsed He jet measured by Thomson and Raman scattering
How dielectric, metallic and liquid targets influence the evolution of electron properties in a pulsed He jet measured by Thomson and Raman scattering Open
Thomson scattering using a Bragg grating notch filter is used to determine the electron properties of a pulsed, kHz-driven, non-thermal atmospheric pressure plasma jet in helium expanding in air. The plasma jet is allowed to freely expand …
View article: Vibrational kinetics of CO2 in non-thermal plasma
Vibrational kinetics of CO2 in non-thermal plasma Open
During the presentation I will discuss the development of two diagnostics to increase our current level of understanding of the vibrational kinetics within CO2 discharges, with the intention to ultimately contribute to a controlled and eff…
View article: A rotational Raman study under non-thermal conditions in a pulsed CO<sub>2</sub>glow discharge
A rotational Raman study under non-thermal conditions in a pulsed CO<sub>2</sub>glow discharge Open
The implementation of in situ rotational Raman spectroscopy is realized for a pulsed glow discharge in CO2 in the mbar range and is used to study the rotational temperature and molecular number densities of CO2, CO, and O2. The polarizabil…
View article: Time evolution of vibrational temperatures in a CO<sub>2</sub>glow discharge measured with infrared absorption spectroscopy
Time evolution of vibrational temperatures in a CO<sub>2</sub>glow discharge measured with infrared absorption spectroscopy Open
Vibrational temperatures of CO2 are studied in a pulsed glow discharge by means of time-resolved in situ Fourier transform infrared spectroscopy, with a 10 μs temporal resolution. A method to analyze the infrared transmittance through vibr…
View article: Detection of rovibrationally excited molecular hydrogen in the electronic ground state via synchrotron radiation
Detection of rovibrationally excited molecular hydrogen in the electronic ground state via synchrotron radiation Open
We describe an original setup named SCHEME (Source of exCited HydrogEn MolEcules) designed to study the recombinative desorption mechanisms of H atoms on a surface by means of high-brilliance monochromatic synchrotron radiation (SR). H ato…
View article: Infrared gas phase study on plasma-polymer interactions in high-current diffuse dielectric barrier discharge
Infrared gas phase study on plasma-polymer interactions in high-current diffuse dielectric barrier discharge Open
A roll-to-roll high-current diffuse dielectric barrier discharge at atmospheric pressure was operated in air and Ar/N2/O2 gas mixtures. The exhaust gas from the discharge was studied using a high-resolution Fourier-transform infrared spect…
View article: Controlling the nitric and nitrous oxide production of an atmospheric pressure plasma jet-/title-
Controlling the nitric and nitrous oxide production of an atmospheric pressure plasma jet-/title- Open
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View article: Electron density and temperature measurements in a magnetized expanding hydrogen plasma
Electron density and temperature measurements in a magnetized expanding hydrogen plasma Open
We report measurements of electron densities, n_{e}, and temperatures, T_{e}, in a magnetized expanding hydrogen plasma performed using Thomson scattering. The effects of applying an axial magnetic field and changing the background pressur…
View article: Fluid modelling of CO2 dissociation in a dielectric barrier discharge
Fluid modelling of CO2 dissociation in a dielectric barrier discharge Open
The dissociation of CO2 in a geometrically symmetric dielectric barrier discharge has been analysed by means of numerical modelling. A time- and space-dependent fluid model has been used, taking into account the spatial variation of the pl…
View article: A time-resolved imaging and electrical study on a high current atmospheric pressure spark discharge
A time-resolved imaging and electrical study on a high current atmospheric pressure spark discharge Open
We present a time-resolved imaging and electrical study of an atmospheric pressure spark discharge. The conditions of the present study are those used for nanoparticle generation in spark discharge generator setups. The oscillatory bipolar…
View article: Note: Rotational Raman scattering on CO2 plasma using a volume Bragg grating as a notch filter
Note: Rotational Raman scattering on CO2 plasma using a volume Bragg grating as a notch filter Open
We present a novel approach for filtering Rayleigh scattering and stray light from Raman scattering in a gas discharge, using a volume Bragg grating as a notch filter. For low frequency rotational Raman contributions, it is essential to fi…