Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 46 for “"Microplasma"”.
-
Microplasma-assisted synthesis of nanocomposites
… this work, direct current atmospheric pressure microplasma (or microplasma) has been deployed for the synthesis of functional gold nanoparticle/nanocarbon nanocomposites and silver nanoparticle/polymer nanocomposites for the first time. Different experimental parameters, such as precursor …
-
Microplasma jet devices in quartz
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
-
Ar-Xe plasma laser and microplasma propagation
… of this thesis, we report on our study of the microplasma propagation phenomenon in our microchannel-cavity array device. We carried out multiple experiments to test different factors which affect microplasma propagation speed and pattern. Our tests showed that device geometry, nearby plasma …
-
Hybrid microplasma-semiconductor transistor and frequency modulator
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2021-12-01
-
Electromagnetically active artificial material comprising multidimensional microplasma photonic crystals
… photonic crystals comprising of columnar microplasmas as the active component have been realized in the Laboratory for Optical Physics and Engineering (LOPE) at the University of Illinois. Real-time tuning of the propagation properties of the crystals in the 110-170 GHz spectral interval …
-
Diatomic excimer dynamics in microplasma lamps and alkali lasers
… in alkali-rare gas mixtures and low temperature microplasmas have been pursued and the experimental and computational results are presented here. This work focuses on the Cs-rare gas and He2 molecules that are of considerable interest as efficient near-infrared lasers, or as the energy source for …
-
Microplasma antennas: characterizing capillary plasma discharges as potential monopole antennas
… cm^(-3). This result indicates that capillary microplasma discharges in capillary tubes can be used as monopole antennas with electronically variable resonances and radiation patterns, as well as the opportunity to investigate microplasma monopole elements incorporated into arrays once the …
-
Silicon microplasma devices as real-time sensors of bulk plasma
Silicon microcavity devices have been demonstrated to exhibit photodetection capabilities. This thesis explores the possibility of using silicon microcavity devices as passive photodetectors for bulk plasma to serve as a diagnostic tool. The voltage-current characteristics of the device show that …
-
Aluminum/aluminum oxide structured microplasma devices: Paschen's Law and applications
Aluminum/aluminum oxide microplasma novel devices can be fabricated by sequences of inexpensive wet electrochemical processes and provide an attractive tool to study plasma physics by modifying the device geometry as desired. A wet electrochemical process, used for fabricating microscale cavities …
-
Characterization of a molded plastic array of ten microplasma jet devices
Novel microplasma jet devices can be fabricated in plastic substrates using inexpensive tools and materials. A simple molding process used for creating microplasma channels has been developed at the Laboratory for Optical Physics and Engineering. These devices have provided the opportunity to …
-
Microplasma-driven, atomic layer deposition of flexible electronic and photonic nanofilms
… plasmas (MALD), has been demonstrated. Microplasma has been drawn attention due to its unique characteristics such as high electron density (>1016 cm-3), low temperature (electron and ion temperature are ~ 5 and 0.1 eV, respectively) and plasma ignition at atmospheric pressure. …
-
Microplasma chemical reaction enhancement by laser modification of dielectric surface topography
… etching technique, infrared laser ablation, for microplasma device fabrication is introduced. The ablated surface provides a topography that is distinct from the surface created by conventional techniques. Chemical, optical, and electrical experiments have been conducted to observe the difference …
-
Aerosol carbon nanotube production via scalable microplasma synthesis of catalyst nanoparticles
… potential scalability. First, a stand-alone microplasma reactor is designed and fabricated, and used for synthesis of iron-carbon aerosols from a ferrocene vapor precursor. The microplasma approach achieves precise particle diameter control in the 1--5 nm range and aerosol concentrations an …
-
Design of multidimensional microplasma array for biofilm removal and dynamic photonic crystals
Microplasma having electron densities of 10^13 (cm^(-3)) – 10^17 (cm^(-3)) opens new and unique avenues for electronic and photonic devices. To advance this unique ability for dynamic functional materials, this thesis focuses on designing and realizing of multidimensional periodic structures of …
-
Photolithography and surface modification applications of a 172 nanometer xenon microplasma excilamp
… (EUVL). Above all, a novel lamp in which microplasma is generated in the depletion region of a reverse-biased silicon carbide diode was demonstrated as a robust technique to obtain future xenon excilamps with high electron densities.
-
Reconfigurable antennas based on microplasma as a time-varying dielectric or conductor
… accomplishments reported in this dissertation: microplasma on a chip, plasma photonic crystals, and microplasma antennas. Dynamic behaviors of microplasma packets were described using four different microchannel designs. An array of microplasma jets were used to demonstrate plasma photonic …
-
Analytical evaluation of microplasma technologies for production of hydrogen fuel from water
… efficiency despite technological limitations. Microplasma technologies utilize nonthermal and non-Maxwellian reaction conditions in nonconventional chemical reactions and could provide novel pathways to producing H2 fuel. The current work is the first demonstration of H2 production from H2O …
-
Development of electrode manipulated close-packed microplasma jet arrays in a transparent polymer
Close-packed arrays of novel microplasma jets at atmospheric pressure have been realized in a moldable, resilient, and optically transparent polymer in multiple dimensions. A micromolding-based assembly process enables microplasma jets to be generated in cylindrical microchannels with diameters …
-
Confinement of microplasma in silicon trenches with widths as small as 2.5 μm
… major milestone. In this thesis, realization of microplasma inside channel devices with the characteristic dimensions of 5 μm and 2.5 μm is discussed. Data collected during the characterization of 5 μm devices are consistent with Paschen’s curve. Operating devices with a characteristic dimension …
Page 1 of 3