The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Nadhira Laidani - One of the best experts on this subject based on the ideXlab platform.
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Hardness aNd Elastic Modulus of Neodymium-doped TiO2 films
2014Co-Authors: Ruben Bartali, Rajesh Pandiyan, Victor Micheli, Gloria Gottardi, Nadhira LaidaniAbstract:In the present work the mechanical properties of titanium dioxide (TiO2) thin films doped with Neodymium (Nd) were explored. TiO2Nd thin films were deposited by radiofrequency co-sputtering from a TiO2 aNd Nd targets. The chemistry was studied using Auger electron spectroscopy (AES). The mechanical properties were measured by nanoiNdentation. The results showed surprisingly that the incorporation of low concentration of Nd in an atomic ratio of 3.7% to Ti in the TiO2 matrix increase the hardness aNd elastic modulus of materials.
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Influence of Nd3+ doping on the structural aNd near-IR photoluminescence properties of nanostructured TiO2 films
Energy Procedia, 2011Co-Authors: Rajesh Pandiyan, Ruben Bartali, Victor Micheli, Gloria Gottardi, I. Luciu, Davor Ristic, G. Alombert Goget, Maurizio Ferrari, Nadhira LaidaniAbstract:Abstract Doping of TiO 2 – a wide baNd gap material - with Neodymium (Nd 3+ ) ions have been the focus of research interest for the solar spectrum downshifting, a process which can improve the efficiency of silicon based solar cells. This work presents the influence of varying Nd doping concentration in the range 1.17-25 at.% in the TiO 2 host matrix. Thin films of thickness between 1 - 2 μm were deposited by Radio-Frequency Co-Sputtering of TiO 2 aNd Neodymium (Nd) target on quartz aNd silicon substrates at room temperature. The films are annealed in an air ambient after deposition. Film properties were studied from the structural aNd chemical composition point of view by means of X-ray diffraction (XRD), Auger Electron Spectroscopy (AES). Two distinct photoluminescence emission peaks were observed at 902 aNd 1080 nm in the doped films, pertaining to the transitions between the excited levels 4 F 3/2 to 4 I 9/2 aNd 4 I 11/2 levels of the Nd 3+ ions by exciting at 514.5 aNd 355 nm.
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European Materials Research Society Conference Symp. Advanced Inorganic Materials aNd Concepts for Photovoltaics Influence of Nd 3+ doping on the structural aNd near-IR photoluminescence properties of nanostructured TiO2 films
2011Co-Authors: Rajesh Pandiyan, Ruben Bartali, Victor Micheli, I. Luciu, Davor Ristic, G. Alombert Goget, Mariano Ferrari, Nadhira LaidaniAbstract:Abstract Doping of TiO 2 – a wide baNd gap material - with Neodymium (Nd 3+ ) ions have been the focus of research interest for the solar spectrum downshifting, a process which can improve the efficiency of silicon based solar cells. This work presents the influence of varying Nd doping concentration in the range 1.17-25 at.% in the TiO 2 host matrix. Thin films of thickness between 1 - 2μm were deposited by Radio-Frequency Co-Sputtering of TiO 2 aNd Neodymium (Nd) target on quartz aNd silicon substrates at room temperature. The films are annealed in an air ambient after deposition. Film properties were studied from the structural aNd chemical composition point of view by means of X-ray diffraction (XRD), Auger Electron Spectroscopy (AES). Two distinct photoluminescence emission peaks were observed at 902 aNd 1080 nm in the doped films, pertaining to the transitions between the excited levels 4 F 3/2 to I 9/2 aNd 4 I 11/2 levels of the Nd 3+ ions by exciting at 514.5 aNd 355 nm. © 2011 Published by Elsevier Ltd. Selection aNd/or peer-review uNder responsibility of the EMRS 2011 symposium organizers:
Graham E. Trope - One of the best experts on this subject based on the ideXlab platform.
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Monocular blurring. A complication of YAG laser iridotomy.
Ophthalmology, 1991Co-Authors: Paul H. Murphy, Graham E. TropeAbstract:Laser iridotomy is the procedure of choice for primary angle-closure glaucoma. The authors report a new visual disturbance after Neodymium (Nd): YAG laser iridotomy. Thirteen patients presented with monocular blurring or a bluish or colored line after the laser procedure. Each eye had a patent iridotomy partially exposed by the upper lid. When the iridotomy was fully covered or fully exposed, symptoms disappeared. Symptoms also were relieved with tinted lenses. The authors suggest close preoperative examination with careful placement of the laser iridotomy entirely uNder the upper lid to prevent this potential visual disturbance.
Di Hu Chen - One of the best experts on this subject based on the ideXlab platform.
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Microstructure aNd hemocompatibility of Neodymium doped zinc oxide thin films
Materials Letters, 2011Co-Authors: Zhanyun Huang, Ping Luo, Minhu Chen, Shirong Pan, Di Hu ChenAbstract:Abstract By the radio frequency magnetron sputtering, both un-doped aNd Neodymium (Nd) doped ZnO thin films were grown on Si (100) substrates. The microstructure of the films has preferred c-axis growth orientation confirmed by the X-ray diffraction spectra. The crystallite size of ZnO crystallite decreases with the increasing of Nd concentration. We show that the hemocompatibility can be improved by a suitable Nd doping in the ZnO thin films. It is verified by both calculations on surface energy aNd interfacial tension of the sample, aNd experiments on the wettability, the proteins adsorption, aNd the platelets adhesion.
J. Palou - One of the best experts on this subject based on the ideXlab platform.
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the q switched Neodymium Nd yag laser with quadruple frequency
Dermatologic Surgery, 1998Co-Authors: José Luis Cisneros, R. Del Rio, J. PalouAbstract:backgrouNd.The Q-switched Neodymium (Nd):YAG laser with quadruple frequency is very effective for the treatment of tattoos, pigmented lesions, aNd vascular, benign lesions. It is also an option for treating rhytides, scars, aNd facial pigmentations.objectives.This paper is based on a series of patie
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The Q‐switched Neodymium (Nd):YAG Laser with Quadruple Frequency.
Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.], 1998Co-Authors: José Luis Cisneros, R. Del Rio, J. PalouAbstract:backgrouNd.The Q-switched Neodymium (Nd):YAG laser with quadruple frequency is very effective for the treatment of tattoos, pigmented lesions, aNd vascular, benign lesions. It is also an option for treating rhytides, scars, aNd facial pigmentations.objectives.This paper is based on a series of patie
Rajesh Pandiyan - One of the best experts on this subject based on the ideXlab platform.
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Hardness aNd Elastic Modulus of Neodymium-doped TiO2 films
2014Co-Authors: Ruben Bartali, Rajesh Pandiyan, Victor Micheli, Gloria Gottardi, Nadhira LaidaniAbstract:In the present work the mechanical properties of titanium dioxide (TiO2) thin films doped with Neodymium (Nd) were explored. TiO2Nd thin films were deposited by radiofrequency co-sputtering from a TiO2 aNd Nd targets. The chemistry was studied using Auger electron spectroscopy (AES). The mechanical properties were measured by nanoiNdentation. The results showed surprisingly that the incorporation of low concentration of Nd in an atomic ratio of 3.7% to Ti in the TiO2 matrix increase the hardness aNd elastic modulus of materials.
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Influence of Nd3+ doping on the structural aNd near-IR photoluminescence properties of nanostructured TiO2 films
Energy Procedia, 2011Co-Authors: Rajesh Pandiyan, Ruben Bartali, Victor Micheli, Gloria Gottardi, I. Luciu, Davor Ristic, G. Alombert Goget, Maurizio Ferrari, Nadhira LaidaniAbstract:Abstract Doping of TiO 2 – a wide baNd gap material - with Neodymium (Nd 3+ ) ions have been the focus of research interest for the solar spectrum downshifting, a process which can improve the efficiency of silicon based solar cells. This work presents the influence of varying Nd doping concentration in the range 1.17-25 at.% in the TiO 2 host matrix. Thin films of thickness between 1 - 2 μm were deposited by Radio-Frequency Co-Sputtering of TiO 2 aNd Neodymium (Nd) target on quartz aNd silicon substrates at room temperature. The films are annealed in an air ambient after deposition. Film properties were studied from the structural aNd chemical composition point of view by means of X-ray diffraction (XRD), Auger Electron Spectroscopy (AES). Two distinct photoluminescence emission peaks were observed at 902 aNd 1080 nm in the doped films, pertaining to the transitions between the excited levels 4 F 3/2 to 4 I 9/2 aNd 4 I 11/2 levels of the Nd 3+ ions by exciting at 514.5 aNd 355 nm.
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European Materials Research Society Conference Symp. Advanced Inorganic Materials aNd Concepts for Photovoltaics Influence of Nd 3+ doping on the structural aNd near-IR photoluminescence properties of nanostructured TiO2 films
2011Co-Authors: Rajesh Pandiyan, Ruben Bartali, Victor Micheli, I. Luciu, Davor Ristic, G. Alombert Goget, Mariano Ferrari, Nadhira LaidaniAbstract:Abstract Doping of TiO 2 – a wide baNd gap material - with Neodymium (Nd 3+ ) ions have been the focus of research interest for the solar spectrum downshifting, a process which can improve the efficiency of silicon based solar cells. This work presents the influence of varying Nd doping concentration in the range 1.17-25 at.% in the TiO 2 host matrix. Thin films of thickness between 1 - 2μm were deposited by Radio-Frequency Co-Sputtering of TiO 2 aNd Neodymium (Nd) target on quartz aNd silicon substrates at room temperature. The films are annealed in an air ambient after deposition. Film properties were studied from the structural aNd chemical composition point of view by means of X-ray diffraction (XRD), Auger Electron Spectroscopy (AES). Two distinct photoluminescence emission peaks were observed at 902 aNd 1080 nm in the doped films, pertaining to the transitions between the excited levels 4 F 3/2 to I 9/2 aNd 4 I 11/2 levels of the Nd 3+ ions by exciting at 514.5 aNd 355 nm. © 2011 Published by Elsevier Ltd. Selection aNd/or peer-review uNder responsibility of the EMRS 2011 symposium organizers:
