Academic literature on the topic 'Pulsed laser irradiation'

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Journal articles on the topic "Pulsed laser irradiation"

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ZHANG, DUANMING, DAN LIU, ZHIHUA LI, SIPU HOU, BOMING YU, LI GUAN, XINYU TAN, and LI LI. "EFFECTS OF PLASMA SHIELDING ON PULSED LASER ABLATION." Modern Physics Letters B 20, no. 15 (June 30, 2006): 899–909. http://dx.doi.org/10.1142/s021798490601041x.

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We have developed a theoretical model which studies the characteristics of laser-plasma interaction, the effect of plasma shielding and plasma radiation in the ablation process. The model is used to simulate 25 ns square pulsed laser irradiation on YBa 2 Cu 3 O 7 targets, and pulsed laser with the pulse width of 25 ns (FWHM) irradiation on Ni targets. The evolution of the plasma length and the transmitted intensity are performed. The model shows the variation of ablation depth with energy density. Moreover, we obtain the dependence of the ablation depth on the number of laser pulses. The satisfactorily good agreement between our results and experimental results confirms that plasma shielding plays a relevant role in the ablation process.
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Ristic, Slavica, Suzana Polic, Bojana Radojkovic, and Joakim Striber. "Analysis of ceramics surface modification induced by pulsed laser treatment." Processing and Application of Ceramics 8, no. 1 (2014): 15–23. http://dx.doi.org/10.2298/pac1401015r.

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This paper presents the effects of laser light irradiation on the surface of ceramics dating from archaeological site Stubline (Obrenovac, Belgrade), Serbia. Two different pulsed lasers: TEA CO2 (10.6 ?m wavelength, pulse duration tp = 100 ns) and Nd:YAG (wavelengths 1064 nm and 532 nm, tp = 150 ps) have been used for surfaces treatment. Laser irradiation fluence was in the range of 1-20 J/cm2. Ceramics surface modifications induced by pulsed laser treatment were examined by scanning electron microscope, SEM, and the composition with energy dispersive X-ray, EDX, analysis. The tests were performed in order to obtain as much as possible information about the appropriate choice of materials and techniques for the further conservation and restoration of these items. The second objective was to determine the surface modifications induced by pulsed laser treatment above damage threshold (a safe cleaning laser fluence), as an important parameter in the use of lasers for the cleaning of cultural ceramic items.
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Kodama, Shuhei, Keita Shimada, Masayoshi Mizutani, and Tsunemoto Kuriyagawa. "Effects of Pulse Duration and Heat on Laser-Induced Periodic Surface Structures." International Journal of Automation Technology 14, no. 4 (July 5, 2020): 552–59. http://dx.doi.org/10.20965/ijat.2020.p0552.

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Compared with traditional nanotexturing methods, an ultrashort-pulsed laser is an efficient technology of fabricating nanostructures called laser-induced periodic surface structures (LIPSS) on material surfaces. LIPSS are easily fabricated when the pulse duration is shorter than collisional relaxation time (CRT). Accordingly, ultrashort-pulsed lasers have been mainly used to study LIPSS, but they unstably irradiate while requiring high costs. Although long-pulsed lasers have low cost and high stability, the phenomena (such as the effect of pulse duration, laser wavelength, and heat) of the LIPSS fabricated using short-pulsed lasers with the pulse duration close to the maximum CRT, which is greater than femtosecond, have not been clarified. However, the nanosecond pulse laser has been reported to produce LIPSS, but those were unclear and ununiform. In this study, the short-pulsed laser with the pulse duration of 20 ps, which is close to the maximum CRT, was employed to clarify the effects of pulse duration and heat on the fabrication of LIPSS and to solve problems associated with ultrashort-pulsed lasers. First, a finite-difference time-domain simulation was developed at 20-ps pulse duration to investigate the effects of irradiation conditions on the electric-field-intensity distribution. Subsequently, experiments were conducted using the 20-ps pulse laser by varying conditions. The aspect ratio of the LIPSS obtained was greater than that of the LIPSS fabricated using ultrashort-pulsed lasers, but LIPSS were not fabricated at 355- and 266-nm laser wavelength. In addition, the short-pulsed laser experienced thermal influences and a cooling material was effective for the fabrication of LIPSS with high-aspect-ratio. This demonstrates the effects of pulse duration close to the CRT and heat on the fabrication of LIPSS.
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Tetyorkin, V. V. "Conductivity type conversion in p-CdZnTe under pulsed laser irradiation." Semiconductor Physics Quantum Electronics and Optoelectronics 17, no. 3 (September 30, 2014): 291–94. http://dx.doi.org/10.15407/spqeo17.03.291.

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Jiang, Jianwei, Shaojuan Liu, Chunlei Wang, and Hongyan Zhang. "Overcoming Multidrug Resistance by On-Demand Intracellular Release of Doxorubicin and Verapamil." Journal of Nanomaterials 2018 (May 31, 2018): 1–7. http://dx.doi.org/10.1155/2018/3568190.

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Multidrug resistance (MDR) is one of the major obstacles to the successful application of cancer chemotherapy. Herein, we developed light-responsive doxorubicin-and-verapamil-coencapsulated gold liposomes to overcome MDR. Upon ns-pulsed laser irradiation, the highly confined thermal effect increased the permeability of the phospholipid bilayer, triggering the release of doxorubicin and verapamil, leading to high concentrations in cells. Free verapamil efficiently inhibited the membrane multidrug resistance proteins (MRPs), while the high concentration of doxorubicin saturated MRPs, thus overcoming MDR. We showed that nanosecond- (ns-) pulsed laser- (532 nm, 6 ns) induced doxorubicin release from gold liposomes depended on laser fluence and pulse number. More than 58% of the doxorubicin was released with a 10-pulse irradiation (100 mJ/cm2). Furthermore, ns laser pulses also liberated doxorubicin from endocytosed gold liposomes into the cytosol in MDA-MB-231-R cancer cells. The cytotoxicity of doxorubicin coencapsulated with verapamil was significantly enhanced upon laser irradiation. This study suggested that light-triggered on-demand release of chemotherapeutic agents and MRP inhibitors could be used advantageously to overcome multidrug resistance.
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SHIMAMURA, AKI, ARRI PRIIMAGI, JUN-ICHI MAMIYA, MOTOI KINOSHITA, TOMIKI IKEDA, and ATSUSHI SHISHIDO. "PHOTOINDUCED BENDING UPON PULSED IRRADIATION IN AZOBENZENE-CONTAINING CROSSLINKED LIQUID-CRYSTALLINE POLYMERS." Journal of Nonlinear Optical Physics & Materials 20, no. 04 (December 2011): 405–13. http://dx.doi.org/10.1142/s0218863511006200.

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We have investigated the photoresponsive behavior of homogeneously aligned low-azobenzene-concentration crosslinked liquid-crystalline polymers. We compared the thermal contraction and photocontraction of the films, and show that upon UV irradiation, they bend efficiently towards the actinic light source. The photoinduced bending is studied both under continuous-wave irradiation and irradiation with nanosecond pulses. Pulsed irradiation revealed that the photomechanical response can take place within sub-millisecond time scale, and that even a single laser pulse can cause the sample to bend.
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Dauletmuratov, B. K. "Features of a shock wave in CdTe by pulsed laser irradiation." Semiconductor Physics Quantum Electronics and Optoelectronics 14, no. 1 (February 28, 2011): 130–34. http://dx.doi.org/10.15407/spqeo14.01.130.

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Khaydarova, Anna, and Mariya Matrunchik. "Structure and Hardness of М2 High Speed Steel Modified by Pulsed Laser Irradiation." Materials Science Forum 942 (January 2019): 50–58. http://dx.doi.org/10.4028/www.scientific.net/msf.942.50.

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The paper studies the surface structure and microhardness of the coating modified by the pulsed laser irradiation. The coating is obtained by plasma-jet hard-facing of the AISI (American Iron and Steel Institute) М2 high speed steel powder. The modes of the laser irradiation differ in peaking capacity, pulse duration and diameters of the focused laser beam. It is demonstrated that the weld penetration shape factor depends on the laser beam fluence and the pulse duration. In its turn, the weld penetration shape factor effects the quality of obtained irradiation zones.
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Kodama, Shuhei, Shinya Suzuki, Akihiro Shibata, Keita Shimada, Masayoshi Mizutani, and Tsunemoto Kuriyagawa. "Effect of Crystal Structure on Fabrication of Fine Periodic Surface Structures with Short Pulsed Laser." International Journal of Automation Technology 12, no. 6 (November 5, 2018): 868–75. http://dx.doi.org/10.20965/ijat.2018.p0868.

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In recent years, nanostructures have been required for industry and medical services, to perform functions such as reduction in friction, control of wettability, and enhancement in biological affinity. Ultrashort pulsed lasers have been applied to meet these demands, and have been actively studied both experimentally and theoretically in terms of phenomena and principles. In this study, to clarify the phenomenon of the fabrication of laser-induced periodic surface structures (LIPSS), and its application to industry, experiments were conducted on SUS304, titanium, and nickel-phosphorus by a short pulsed laser that has a longer pulse duration, higher cost-effectiveness, and higher stability than ultrashort pulsed lasers. The results confirmed that while LIPSS were fabricated on Ti and Ni-P workpieces, a uniform fine periodic structure was not fabricated on the whole irradiated surface of SUS304, and crystal grain boundaries appeared with low energy density and irradiation number because SUS304 is an alloy composed of Fe, Cr, and Ni. Further, the short pulsed laser has a low power and long pulse duration, inducing the thermal effect. We clarified the effect of crystal structure on fabricating fine periodic surface structures with short pulsed laser.
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Zhenkun Yu, Zhenkun Yu, Hongbo He Hongbo He, Xu Li Xu Li, Hongji Qi Hongji Qi, and Wenwen Liu Wenwen Liu. "Stress mechanism of pulsed laser-driven damage in thin film under nanosecond ultraviolet laser irradiation." Chinese Optics Letters 11, no. 7 (2013): 073101–73102. http://dx.doi.org/10.3788/col201311.073101.

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Dissertations / Theses on the topic "Pulsed laser irradiation"

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Yablon, Andrew D. 1970. "Photothermal effects of pulsed laser irradiation of biological tissue." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10244.

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Dobson, Helen Louise. "The interaction of pulsed Nd:YAG laser irradiation with human enamel." Thesis, University of Glasgow, 1997. http://theses.gla.ac.uk/4312/.

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The aim of the work presented in this thesis was to investigate the interaction of pulsed Nd:YAG laser irradiation with both sound and artificially carious human enamel. More specifically, the aims were to characterise the effect of Nd:YAG laser irradiation on artificially created white spot enamel lesions (to simulate the effect of lasing carious enamel); to quantify the effects of pulsed Nd:YAG laser irradiation on enamel demineralisation; to investigate whether there is synergy between the action of pulsed Nd:YAG laser irradiation and fluoride in terms of impairing acid resistance to enamel; and finally to clarify the mechanism by which pulsed Nd:YAG laser irradiation physically interacts with enamel to induce acid resistance. Laser irradiation of artificial white spot lesions, at 50 mJ and 100 mJ (10 pps, 2 or 5 sec), was found to ablate tissue, causing crater formation. Ablation depth, as determined by microdensitometry, was correlated only with the power used, being greater at 100 mJ than at 50 mJ. SEM examination of the surface morphology of lased enamel, and the surrounding unlased area, was consistent with a process of melting and recrystallisation. It is evident, from this investigation, that in order to remove carious enamel selectively, while leaving sound enamel intact, successive applications of low power irradiation (50 mJ) are the most suitable. The work presented in this thesis has indicated the versatility of the Nd:YAG laser as a dental instrument. The laser can be used to ablate carious enamel and has potential as a prophylactic treatment for caries. The most significant aspect of the laser as a strategy to prevent caries, is that it seems to physically alter the structure of enamel so may, therefore, be a method of permanently increasing tooth resistance to decay.
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Venugopalan, Vasan. "The thermodynamic response of polymers and biological tissues to pulsed laser irradiation." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/12021.

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Dark, Marta Lyselle 1970. "The physical response of soft musculoskeletal tissues to short pulsed laser irradiation." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9538.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1999.
Includes bibliographical references (leaves 128-132).
An experimental study was performed to determine the physical properties of knee meniscus using a low energy laser technique. Following irradiation by a 10 ns laser pulse, tissue undergoes thermoelastic expansion in response to laser-induced stresses. The stresses evolve, propagating through the tissue. If they exceed the material's strength, ablation occurs-the material ruptures. Below ablation threshold, the material remains in an expanded state until thermal relaxation occurs. We use numerical methods to solve the 3-D thermoelastic wave equation for a hydrated sample. In addition to thermoelastic expansion, expansion due to the formation of cavitation bubbles within the tissue was modeled. Cavitation occurs when tensile stresses rupture fluid. The laser-induced response of a gelatin phantom was measured with a Michelson interferometer and compared with predictions. Using gelatin as a tissue model provided a consistent experimental model of meniscus. Meniscus, like all biological tissue, is highly heterogeneous. By adapting the time dependent numerical solution of the wave equation, the measurement of physical properties of a hydrated sample became possible. The thermoelastic model depends on sound speed, Poisson's ratio, thermal expansion coefficient, and optical penetration depth. Once the behavior of gelatin was understood, human knee meniscus was studied. The thermoelastic model and experiment, allows measurement of physical properties of meniscus. Also, a numerical model of cavitation based on Rayleigh's equations was developed. By comparing experiment and theory in meniscus and water, we determined properties important to cavitation: threshold pressure, bubble density, surface tension and nucleation size. Finally, histology was compared with experiment. The presence and amount of cavitation displacement was correlated with the condition of meniscus. Physical properties can be used to diagnose degenerative cartilage. This research has increased understanding of the interaction of short laser pulses with cartilage tissue, and measured significant physical properties of knee meniscus with a minimally invasive laser technique.
by Marta Lyselle Dark.
Ph.D.
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Mohanan, Senthilnathan. "Tailoring the magnetic anisotropy of thin films utilizing large persistent stress and pulsed laser irradiation." [S.l. : s.n.], 2009. http://nbn-resolving.de/urn:nbn:de:bsz:289-vts-66577.

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Mabakachaba, Boitumelo Mafalo. "Carbon, magnesium implantation and proton irradiation on pulsed laser deposited thermochromic thin film of VO2." University of Western Cape, 2020. http://hdl.handle.net/11394/7723.

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>Magister Scientiae - MSc
When the spacecrafts orbit in space, it is subjected to significant thermal cycling variation. Thermal regulation of the spacecraft temperature is required to ensure a good operation of the small crafts such as CubeSats and the on-board equipment while minimizing the weight. Three methods employed for the Smart Radiator Devices (SRD) are (i) mechanical louvers, (ii) electrochromic coatings and (iii) thermochromic coatings (which is of interest in this study). Based on the characteristics of the thermochromic coatings, the passive smart radiator device is by far the most efficient option since there are no mechanical moving components and also no electric energy needed for the craft to operate.
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Itapu, Srikanth. "Microstructuring of Nickel Thin Films and Property Modification of Nickel Oxide Films by Pulsed Laser Irradiation." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501701523725736.

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Tadadjeu, Sokeng Ifriky. "Sub-10 MeV proton irradiation effects on a coating obtained from the pulsed laser ablation of W2B5/B4C for space applications." Thesis, Cape Peninsula University of Technology, 2015. http://hdl.handle.net/20.500.11838/2181.

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Thesis submitted in partial fulfilment of the requirements for the degree Doctor of Technology: Electrical, Electronic and Computer Engineering in the Faculty of Engineering at the Cape Peninsula University of Technology
This research investigates the effects of sub-10 MeV protons on coatings obtained from the pulsed laser ablation of W2B5/B4C. This is in an attempt to extend the bullet proof applications of W2B5/B4C to space radiation shielding applications, offering low cost and low mass protection against radiation including X-rays, neutrons, gamma rays and protons in low Earth orbit. The focus in this research, however, is on low energy protons. The associated problems addressed in this work are solar cell degradation and Single Event Upsets in high density semiconductor devices caused by low energy protons. The relevant constraints considered are the necessity for low cost, low mass and high efficiency solutions. The work starts with a literature review of the space environment, the interaction of radiation with matter, and on pulsed laser deposition as a technique of choice for the coating synthesis. This paves the way for the pulsed laser ablation of W2B5/B4C. The resulting coating is a solid solution of the form WC1-xBx which contains crystalline and amorphous forms. Two proton irradiation experiments are carried out on this coating, and the resulting effects are analysed. The effects of 900 keV proton irradiation were the melting and subsequent growing of nanorods on the surface of the coating, the lateral transfer of the proton energy across the coating surface, and the lateral displacement of matter along the coating surface. These effects show that the coating is a promising cost effective and low mass radiation shield against low energy protons. The effects of 1 MeV protons on this coating are the three-stage melting of rods formed on the coating surface, and further evidence of lateral transfer of energy across the coating surface. Optical measurements of this coating show that it is about 73% transparent in the Ultraviolet, Visible and near Infrared range. This allows it to be used as radiation shielding for solar cells, in addition to high density semiconductor devices, against low energy protons in low Earth orbit. Simulations show that based on coulombic interactions alone, the same level of protection coverglass offers to solar cells can be achieved with about half the thickness of WC1-xBx or less.
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Popescu, Andrei. "Laser deposition and characterization of transparent conductive, bioactive, hydrophobic and antiseptic nanostructures." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4016.

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Les applications présentées dans cette thèse valorisent de diverses manières le principe d'ablation laser, c'est à dire l'arrachement de la matière d'une surface solide suite à l'irradiation avec un faisceau laser. Le plasma généré par irradiation laser impulsionnel a été utilisé pour le dépôt de couches minces ou de nanoparticules et pour l'analyse compositionnelle des couches d'épaisseur nanométrique. Nous avons synthétisé par dépôt laser combinatoire des librairies compositionnelles d'un oxyde mixte transparent d'In et Zn. En utilisant le plasma d'ablation pour le diagnostic compositionnel, nous avons déterminé les concentrations d'indium et de zinc dans les couches minces par spectroscopie laser. Des couches minces de bioverre ont été synthétisées par dépôt laser impulsionnel sur des substrats de titane. En contact avec des cellules ostéoblastes, les bioverres ont stimulé la prolifération et ont augmenté la viabilité. La prolifération des ostéoblastes cultivés sur les couches de bioverre a été 30% supérieure a l'échantillon de contrôle. On a déposé par PLD des couches minces ou nanoparticules adhérentes de ZnO sur des substrats textiles hydrophiles dans un flux d'oxygène ou sous vide pour obtenir des structures avec différentes mouillabilités. En augmentant le nombre d'impulsions laser de 10 à 100 nous avons observé la transition du recouvrement par des nanoparticules isolées vers des couches minces. En fonction de l'atmosphère environnant lors du dépôt, les couches minces et les nanoparticules ont changé leur mouillabilité, passant d'hydrophile en flux d'oxygène à un comportement superhydrophobe (angle de contact de 157°) en cas de dépôt sous vide
The applications presented in this thesis exploit in different modes the principle of laser ablation, i.e. the material removal from a solid surface following irradiation with a pulsed laser beam. The plasma generated by laser ablation was used for thin films or nanoparticles deposition and for the compositional analysis of nanometric thin films. We synthesized by combinatorial pulsed laser deposition, thin film libraries of a complex oxide of In and Zn. Using the ablation plasma for compositional diagnostic, we determined the In and Zn concentrations in films by Laser Induced Breakdown Spectroscopy using a procedure based on the spectral luminance calculation of a plasma in local thermodynamic equilibrium. Thin films of bioactive glass were synthesized by pulsed laser deposition, magnetron sputtering and MAPLE on Ti substrates and tested the transfer accuracy by physico-chemical tests and their functionality in vitro. In contact with human osteoblast cells, the bioactive glasses stimulated their proliferation and enhanced their viability. The proliferation of osteoblasts cultivated on bioactive films was 30% superior to the control sample. ZnO thin films or nanoparticles were deposited on hydrophilic textile substrates in oxygen flux or in vacuum in order to obtain structures with different wetting behavior. Increasing the number of laser pulses from 10 to 100, we observed a coating transition from isolated nanoparticles to thin films fully coating the textile fibers. Function of the ambient atmosphere during experiments, the structures changed their wetting behavior, passing from hydrophilic in oxygen flux to superhydrophobic (157°) in case of deposition in vacuum
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Labouret, Timothée. "Irradiation laser ultrabrève de nanobâtonnets d'or individuels en milieu aqueux : photo-génération de phénomènes d'intérêt biomédical." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLC078/document.

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Les nanoparticules d’or présentent des propriétés optiques particulières grâce au phénomène de résonance de plasmon de surface. L’irradiation laser d’une nanoparticule au voisinage de sa fréquence de résonance induit deux effets notables : une forte absorption de l’énergie lumineuse et une amplification du champ électromagnétique dans son environnement proche. Grâce à ces deux caractéristiques et à la bonne biocompatibilité de l’or, ces nano-objets peuvent être utilisés pour bon nombre d’applications biomédicales déclenchées par la lumière. Dans ce domaine, les nanobâtonnets d’or (AuNR) sont particulièrement prometteurs. En effet, il est possible d’accorder leur fréquence de résonance via leur rapport d’aspect, par exemple pour la placer dans la fenêtre de transparence relative des tissus biologiques (650–1350 nm). Cette résonance présente alors un facteur de qualité élevé. L’irradiation d’AuNR produit ainsi de multiples effets biologiques complexes, surtout avec des impulsions ultrabrèves intenses. Néanmoins, la physique de l’AuNR en milieu aqueux n’est réellement comprise que dans des conditions plus simples. C’est pourquoi cette thèse vise à mieux comprendre cette multi-physique dans les conditions d’irradiation pertinentes pour la biologie. Elle apporte des éléments de réponse théoriques, numériques et expérimentaux sur la réponse optique transitoire, la dynamique des échanges d’énergies, la génération plasmonique de plasma, la photoluminescence et la production de dérivés réactifs de l’oxygène. Tous ces processus ont un impact biologique ou biomédical. Leur analyse révèle avant tout le rôle prépondérant des électrons chauds en régime ultrabref
Gold nanoparticles exhibit specific optical properties thanks to surface plasmon resonance. Laser irradiation close to their resonance frequency induces two main effects : a high absorption of the electromagnetic energy and an enhancement of the electromagnetic field in their close vicinity. In addition, gold is biocompatible. These three features have made them extremely useful for a number of light-triggered biomedical applications. In this field, gold nanorods (AuNRs) specifically show promise. Indeed, their resonance frequency can be tuned by changing their aspect ratio in order to match the window where biological media are relatively transparent (650–1350 nm). Their resonance then exhibits a high quality factor. As a result, light irradiation of AuNRs triggers various complex biological effects, especially when intense, ultrashort pulses are used. Nevertheless, the physics of irradiated AuNRs in aqueous media is only properly understood in more simple situations. That is why this thesis aims at reaching a better understanding of these multi-physics in biologically relevant irradiation conditions. It provides theoretical, numerical and experimental pieces of information about the transient optical response, the dynamics of energy transfer, the plasmon-assisted plasma generation, the photoluminescence and the production of reactive oxygen species. Each of these processes has biological or biomedical impact. Analyzing the underlying mechanisms reveals above all the major role of hot electrons in the ultrashort regime
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Books on the topic "Pulsed laser irradiation"

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Hong, M. H. Laser applications in nanotechnology. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533060.013.24.

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This article discusses a variety of laser applications in nanotechnology. The laser has proven to be one of many mature and reliable manufacturing tools, with applications in modern industries, from surface cleaning to thin-film deposition. Laser nanoengineering has several advantages over electron-beam and focused ion beam processing. For example, it is a low-cost, high-speed process in air, vacuum or chemical environments and also has the capability to fulfill flexible integration control. This article considers laser nanotechnology in the following areas: pulsed laser ablation for nanomaterials synthesis; laser nanoprocessing to make nanobumps for disk media nanotribology and anneal ultrashort PN junctions; surface nanopatterning with near-field, and light-enhancement effects; and large-area parallel laser nanopatterning by laser interference lithography and laser irradiation through a microlens array. Based on these applications, the article argues that the laser will continue to be one of the highly potential nanoengineering means in next-generation manufacturing.
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Book chapters on the topic "Pulsed laser irradiation"

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Fröhlingsdorf, J., and B. Stritzker. "Amorphous Gallium Produced by Pulsed Excimer Laser Irradiation." In Laser Surface Treatment of Metals, 133–40. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4468-8_14.

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Aydinli, A., M. Berti, A. V. Drigo, and P. G. Merli. "Pulsed Laser Irradiation of Heavily Ge Implanted Silicon." In Materials Modification by High-fluence Ion Beams, 581–88. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1267-0_37.

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Peercy, P. S. "Measurement of Melt and Solidification Dynamics During Pulsed Laser Irradiation." In Laser Surface Treatment of Metals, 611–37. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4468-8_56.

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Peercy, P. S. "Solidification Dynamics and Microstructure of Metals in Pulsed Laser Irradiation." In Laser Surface Treatment of Metals, 57–78. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4468-8_9.

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Yilbaş, Bekir Sami. "Surface Hardening of Sheet Metals Under the Irradiation of Pulsed Nd-Laser." In Laser/Optoelektronik in der Technik / Laser/Optoelectronics in Engineering, 415–21. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-83174-4_85.

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Kaganovskii, Yu, A. Lipovskii, and M. Rosenbluh. "Recording in Quantum Dot Glasses by Pulsed Laser Irradiation." In Unconventional Optical Elements for Information Storage, Processing and Communications, 257–67. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4096-6_29.

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Spaepen, Frans. "Thermodynamics and Kinetics of Metallic Alloy Formation by Picosecond Pulsed Laser Irradiation." In Laser Surface Treatment of Metals, 79–92. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4468-8_10.

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Veleschuk, V. P., V. A. Gnatyuk, T. Aoki, Z. K. Vlasenko, S. N. Levytskyi, A. V. Shefer, A. G. Kuzmich, K. V. Dubyk, V. V. Kuryliuk, and M. V. Isaiev. "Melting Threshold and Thermal Conductivity of CdTe Under Pulsed Laser Irradiation." In Lecture Notes in Networks and Systems, 101–9. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36841-8_10.

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Gaković, B., M. Trtica, S. Petrović, P. Panjan, M. Čekada, and Z. Samardžija. "Surface Structures Formed on AISI 420 Stainless Steel by Pulsed Laser Irradiation." In Materials Science Forum, 309–14. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-971-7.309.

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Carpene, E., M. Kahle, M. Han, and P. Schaaf. "Mössbauer Investigation of Surface Processing by Pulsed Laser Irradiation in Reactive Atmospheres." In Material Research in Atomic Scale by Mössbauer Spectroscopy, 177–86. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0151-9_19.

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Conference papers on the topic "Pulsed laser irradiation"

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Kvasnicka, Jan, Herbert J. Geschwind, Fumitaka Nakamura, Masakatsu Asada, Micheline Levame, and Hassan Bousbaa. "Restenosis after pulsed laser irradiation." In OE/LASE'93: Optics, Electro-Optics, & Laser Applications in Science& Engineering, edited by George S. Abela. SPIE, 1993. http://dx.doi.org/10.1117/12.146578.

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Cheng, Gary J., Daniel Pirzada, Xin Ai, and Ben Li. "Numerical Simulation on Short Pulsed Laser Heating of Semiconductor Thin Films: The Case of GaAs." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-16214.

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The results of numerical simulation of heat transfer phenomena in GaAs thin films irradiated by a pulsed laser are presented. A numerical algorithm involving a discontinuous Galerkin finite element method for the solution of hyperbolic heat conduction is used to solve the dual-phase-lag heat conduction equation The effects of different process parameters on heat propagation are analyzed. The heat conduction mode after pulsed laser irradiation is strongly dependent upon the incident laser energy density, film thickness and pulse duration. The heat transfer behavior for nano-, pico- and femto- second pulses has been studied and compared. A wave-type heat transfer phenomena was observed when pulse duration is of the order of relaxation time of the material being heated. It was found that for sub-picosecond pulses, the heat transfer occurs only by a thermal shock wave.
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Kelley, J. D. "Particle removal from surfaces by pulsed-laser irradiation." In Laser-Induced Damage in Optical Materials: 1991, edited by Harold E. Bennett, Lloyd L. Chase, Arthur H. Guenther, Brian E. Newnam, and M. J. Soileau. SPIE, 1992. http://dx.doi.org/10.1117/12.60098.

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Akane, Toshimitsu, Koji Sugioka, Kotaro Obata, Naoko Aoki, Koichi Toyoda, and Katsumi Midorikawa. "GaN micromachining by short wavelength pulsed laser irradiation." In Second International Symposium on Laser Precision Micromachining, edited by Isamu Miyamoto, Yong Feng Lu, Koji Sugioka, and Jan J. Dubowski. SPIE, 2002. http://dx.doi.org/10.1117/12.456899.

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Leiderer, Paul, Michael Olapinski, Mario Mosbacher, and Johannes Boneberg. "Nanoparticle adhesion and removal studied by pulsed laser irradiation." In High-Power Laser Ablation 2006, edited by Claude R. Phipps. SPIE, 2006. http://dx.doi.org/10.1117/12.675552.

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Oujja, Mohamed, Esther Rebollar, Solenne Gaspard, Concepción Abrusci, Fernando Catalina, Sylvain Lazare, and Marta Castillejo. "Submicro foaming in biopolymers by UV pulsed laser irradiation." In High-Power Laser Ablation 2006, edited by Claude R. Phipps. SPIE, 2006. http://dx.doi.org/10.1117/12.668958.

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Lutey, Adrian H. A., Alessandro Fortunato, Alessandro Ascari, Simone Carmignato, and Leonardo Orazi. "Pulsed Laser Ablation of Lithium Ion Battery Electrodes." In ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/msec2014-3967.

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Lithium ion battery electrodes have been exposed to 1064nm nanosecond pulsed laser irradiation with pulse energy in the range 8μJ – 1mJ and fluence in the range 3.2 – 395J/cm2. Experiments have been executed at translational velocities of 100mm/s and 1m/s, allowing individual characterization of the graphite and lithium metal oxide coatings of the copper anode and aluminum cathode, respectively, as well as that of the complete multi-layer structures. A 3D optical profiler has been utilized to measure the incision depth of all samples and allow observation of the process quality. At high velocity, partial or complete removal of the upper coating layers was achieved with little or no impact on the underlying metallic layers. At low velocity, complete cuts were possible under certain conditions, with process efficiency found to be almost entirely governed by the response of the metallic layers. While the coating layers of each electrode exhibited different responses than the metallic layer, the influence of the latter was found to be dominant for cutting operations. Shorter pulses with fluence in the range 30 – 60J/cm2 were found to lead to optimum process outcomes with the employed laser source.
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Tan, Oon T., Paul Morrison, Stephen Murray, and E. F. MacNichol, Jr. "Red Blood Cell Responses To Pulsed Laser Irradiation." In OE/LASE '89, edited by Kazuhiko Atsumi, Norman R. Goldblatt, and Stephen N. Joffe. SPIE, 1989. http://dx.doi.org/10.1117/12.952044.

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Bogachev, Nikolai N., Namik G. Gusein-zade, Serafima A. Filatova, Vladimir A. Kamynin, Sergey Y. Kazantsev, Sergei Podlesnykh, Vladimir E. Rogalin, et al. "Plasma antennas formed in a Ge crystal under laser irradiation." In XIV International Conference on Pulsed Lasers and Laser Applications (AMPL-2019), edited by Anton V. Klimkin, Victor F. Tarasenko, and Maxim V. Trigub. SPIE, 2019. http://dx.doi.org/10.1117/12.2553483.

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Satake, Tsunehisa, Masato Watanabe, Kazuhiko Horioka, Makoto Shiho, and Yoshimori Honkura. "Process analysis of boring with pulsed-laser irradiation." In Advanced High-Power Lasers and Applications, edited by Sadao Nakai, Lloyd A. Hackel, and Wayne C. Solomon. SPIE, 2000. http://dx.doi.org/10.1117/12.375201.

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Reports on the topic "Pulsed laser irradiation"

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Moody, Neville R. Basic Research of Intrinsic Tamper Indication Markings Defined by Pulsed Laser Irradiation (Quad Chart). Office of Scientific and Technical Information (OSTI), August 2015. http://dx.doi.org/10.2172/1209886.

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Adams, David P., Ryan D. Murphy, David J. Saiz, Steven Yalisove, David Bahr, Samantha Lawrence, Neville Moody, Geneva Neiser, and Catherine Sobczak. Basic Research of Intrinsic Tamper Indication Markings and Patterns Defined by Pulsed Laser Irradiation: Final Report. Office of Scientific and Technical Information (OSTI), February 2016. http://dx.doi.org/10.2172/1561017.

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Adams, David P. Year End Report for DTRA: Grant/Award # 13-5897I Basic Research of Intrinsic Tamper indication Markings and Patterns defined by Pulsed Laser Irradiation. Office of Scientific and Technical Information (OSTI), March 2020. http://dx.doi.org/10.2172/1608082.

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Borwein, Bessie. The Effects of Single Pulse and Repetitive (Cumulative) Neodymium and Frequency-Doubled Neodymium Laser Irradiations on Prior Light- and Dark-Adapted Monkey Retinas. Fort Belvoir, VA: Defense Technical Information Center, December 1990. http://dx.doi.org/10.21236/ada238717.

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