Sökning: "excimer laser"

Visar resultat 6 - 10 av 16 avhandlingar innehållade orden excimer laser.

1. 6. Partially Coherent Laser Radiation - Modeling and Application to Optical Microlithography

   Författare :Christer Rydberg; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microlithography; coherence; temporal speckle; partial coherence; optical propagation; number of degrees of freedom; dynamic speckle;

   Sammanfattning : This work deals with a type of light that has properties somewhere between blackbody radiation and conventional laser light; such light is referred to as partially coherent. One example is the radiation from the pulsed excimer laser, which is used in the manufacturing of most of the worlds integrated circuits. LÄS MER

3. 7. Sub-micron Structures in Laser Ablated YBa2Cu3O7-x Thin Films

   Författare :Peter Larsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : This thesis treats the epitaxial growth of high-Tc superconductors and other perovskite oxides as well as the patterning of these into sub-micron structures for superconducting electronic devices. A computer controlled laser ablation system, based on a KrF excimer laser (248 nm) to induce ablation, was developed to allow complex thin film growth processes. LÄS MER

4. 8. Water, hyaluronan and surface shape in corneal wound healing after excimer surgery : experimental studies

   Författare :Beat A Weber; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :photorefractive keratectomy; excimer laser; rabbit; cornea; wound healing; microradiography; hyaluronan; planimetry; leukocyte protein marker; haze; regression; surface irregularities; subepithelial deposits; remodeling; epithelial hyperplasia; corticosteroids;

   Sammanfattning : Excimer laser photorefractive keratectomy (PRK) has evolved to a widely performed procedure. The excimer laser corrects refractive ametropias by removing a calculated amount of anterior corneal stroma with great precision and with minimal damage to the adjacent tissues. The correction of myopia up to -5. LÄS MER

5. 9. Inflammation and wound healing following photorefractive keratectomy

   Författare :Santiago Tomás Barberán; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Photorefractive keratectomy; excimer laser; inflammation; flare; prostaglandins; diclofenac; dexamethasone; pain; epithelial healing; corneal topography; growth factors; metalloproteinases; collagen; haze; haze distribution; Scheimpflug system; Laser Flare Meter; regression; reoperation; wound healing;

   Sammanfattning : This study comprises different aspects on the inflammatory and wound healing responses of the eye after Photorefractive Keratectomy (PRK). The purpose was to provide basic information about the inflammatory reaction and the wound healing after surgery. PRK is considered a good technique for surgical correction of and moderate myopia. LÄS MER

7. 10. Heterogeneous Photolytic Synthesis of Nanoparticles

   Författare :Oscar Alm; Klaus Piglmayer; Uppsala universitet; []
   Nyckelord :Chemistry; LCVD; Nanotechnology; Metallocene; Magnetic; Photolysis; OES; tungsten oxide; gas sensing; Kemi;

   Sammanfattning : Nanoparticles of iron, cobalt and tungsten oxide were synthesised by photolytic laser assisted chemical vapour deposition (LCVD). An excimer laser (operating at 193 nm) was used as an excitation source. The LCVD process, was monitored in situ by optical emission spectroscopy (OES). LÄS MER