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.
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Showing 1 to 20 of 100 for “"Excimer"”.
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Photoassociative excitation spectroscopy of excimer molecules
… states was explored as a tool for the study of excimer molecules. Since the repulsive nature of the ground state constrains collision pairs to large internuclear transitions, bound $\gets$ free excitation spectra contain more structure than the bound $\to$ free fluorescence spectra for the same …
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Diatomic excimer dynamics in microplasma lamps and alkali lasers
The dynamics of diatomic excimers - electronically excited molecules having dissociative ground states - generated 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 …
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Stretchable, multimodal, large-area sensor arrays fabricated using excimer laser photoablation technologies
… electrode layers and as in-situ masks for excimer laser photoablation. This approach reduces the number of processing steps and photomasks, is scalable for large-area arrays, and is adaptable for a variety of materials and designs. This novel process is used for interconnect and sensor …
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Experimental study of rare-gases excimer VUV system and H2 Lyman-bands calibration
An electron impact rare gas excimer vacuum ultra-violet experimental system is custom-designed and tested using an argon and H2 mixture. An electron flooding system, i.e. filament, is used as the hot electron source. A SiNx membrane is applied as the entrance foil separating the high vacuum chamber …
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Design of a chemical sampling and analysis system using excimer laser ablation and quartz microcolumns
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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An investigation of the fluorescence emitted by arterial intimas during irradiation by a XeCl excimer laser
Laser angioplasty of occluded arteries has been limited by the unacceptably high rate of vessel wall perforation. To overcome this limitation, fluorescence spectroscopy of arterial wall tissue has been proposed as a technique to discriminate between normal and atherosclerotic arteries and thereby …
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Οne year results using the customized therapeutic protocol (tt-prk) of the ivis excimer laser refractive suite
… ομαλής και ανέπαφης αφαίρεσης ιστού με χρήση του excimer laser συχνότητας 1000 Hz, επιτάχυνε σημαντικά την επούλωση του κερατοειδούς (μέσος όρος 4 ημέρες), με ανεκτά επίπεδα άλγους. Το θεραπευτικό πρωτόκολλο cTen trans-PRK της σουίτας iVis Laser® αποτελεί μια εξαιρετική επιλογή για τη διόρθωση …
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An attampt to measure the electron temperature of a Xenon Chloride excimer laser discharge plasma by Thomson scattering
… A short, 532 nm pulse was injected into the excimer laser and the backscattered light was analysed. The scattered beam was imaged onto the entrance slit of a spectrometer and the spectrally dispersed output was collected by either a streak camera or a photomultiplier array. The injection …
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Effect of Mitomycin C with different application method on rabbit corneal wound healing process after Excimer laser photortherapeutic keratectomy
… haziness and keratocyte proliferation after Excimer laser phototherapeutic keratectomy in rabbit. PTK was performed in both eyes of 18 New Zealand white rabbits using Technolas 217™. After laser removal of the epithelium(40 um depth with the optical zone 6.0mm), stromal ablation of 100 um …
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Laser Processed Materials for Advanced Solar Devices
… for a long time, and among these techniques, excimer laser crystallization has the merits in rapid and stable. In this PhD project, the objective of the excimer laser processing is to develop 1) crystallized a-Si:H thin film as a promising field & thermionic emission candidate, and 2) a novel …
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Langzeitergebnisse nach photorefraktiver Keratektomie zur Korrektur von sphärischen Hyperopien
Ziel dieser Studie war es, die Wirksamkeit des Excimer-Lasers bei der Behandlung sphärischer Hyperopien über einen Zeitraum von zwei Jahren hinaus zu untersuchen. Dazu wurden retrospektiv 57 Patienten bzw. 102 Augen in die Studie aufgenommen, die eine Hyperopie von nicht mehr als +6 dpt. aufwiesen. …
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Fluorination Effect on the Conformational Properties of Alkanes
… chains using emission. We have found that the excimer formation for the fluorinated pyrene monomers is highly dependent on concentration and is less efficient than for pyene. Excimer formation for the fluorinated pyrene dimers is much more efficient than for the fluorocarbon monomers and is …
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Excitation Spectroscopy of Krypton Molecular Rydberg States
… the Kr(,2) ('3)(SIGMA)(,u)('+)(1(,u),O(,u)('-)) excimer has been obtained for 335 (LESSTHEQ) (lamda) (LESSTHEQ) 445 nm and 480 (LESSTHEQ) (lamda) (LESSTHEQ) 545 nm, and Rydberg series of krypton dimers have been observed. The most pronounced peaks in the spectrum have been attributed to …
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Atomic alkali lasers pumped by the dissociation of photoexcited alkali-rare gas collision pairs
… The pump acceptance bandwidths of these excimer bands, historically referred to as spectral satellites, have been observed to be as broad as 5 nm. This characteristic makes excimer-pumped alkali-vapor lasers (XPALs) attractive candidates for the spatial mode conversion of laser diode …
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Microdischarge Devices Fabricated in Silicon
… Operation of microdischarge devices in the excimer species XeI, XeO, and I 2 was investigated. Arrays of microdischarge devices were fabricated and tested using a new geometry and biasing scheme.
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Laser processing of solution based antimony doped tin oxide thin films
… to conventional high temperature annealing, excimer laser processing can provide highly localized energy dissipation, and is an attractive technique to functionalise coated materials. Therefore the work presented in this thesis investigates the use of excimer laser processing to optimise the …
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Dynamics of High- and Low -Pressure Plasma Remediation
The use of DBDs as excimer ultraviolet (UV) lighting sources was also studied. The mixture Xe/Cl2 ≈ 99/1 was found to be an optimum gas mixture for the generation of the XeCl*. Higher applied voltage improves both the intensity and efficiency of UV photon generations. The strong attachment at high …
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Photolytic Laser-Induced Chemical Vapor Deposition for Aluminum Film Growth
… triethylaluminum (TEA) by a KrF (248 nm) pulsed excimer laser were investigated using optical emission spectroscopy, including time-resolved emission measurements. Position-resolved growth rate measurements were used to investigate film growth kinetics during photolysis of TMA using 248 nm light, …
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