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Costas P Grigoropoulos - One of the best experts on this subject based on the ideXlab platform.
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Assembly of Acircular SnO2 Rod Using Optical Tweezers and Laser Curing of Metal Nanoparticles
Japanese Journal of Applied Physics, 2010Co-Authors: Chanhyuk Nam, Jaewon Chung, Daehie Hong, Jaeik Chung, Insung Hwang, Jong Heun Lee, Costas P GrigoropoulosAbstract:Acicular tin dioxide (SnO2) rods (1–2 µm in diameter, 5–20 µm long) were assembled and fused on the patterned gold electrode by an optical tweezer. In addition, the electrical contact between the assembled SnO2 rod and the gold electrode was improved by Laser Curing of gold nanoparticles and the subsequent sintering in the oven. Here, the nanoparticles covered the entire area of the assembled SnO2 rod by evaporating a droplet of nanoparticle solution dripped on the assembled SnO2 rod. Subsequently, nanoparticles near the contact area between the rod and electrode were locally cured by direct heating with a focused infrared Laser beam, which induced desorption of the surface monolayer. Therefore, the cured gold nanoparticles could be sintered after the non-Laser irradiated nanoparticles were cleaned by the initial solvent application. Without sintering of the nanoparticles, the resistance of the assembled SnO2 rod was measured over several MΩ. After the nanoparticle sintering it could be reduced to a few hundred kΩ, which was in agreement with the resistance of the assembled SnO2 rod.
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Laser based hybrid inkjet printing of nanoink for flexible electronics
Proceedings of SPIE, 2005Co-Authors: Jaewon Chung, Nicole R. Bieri, Costas P Grigoropoulos, Yeonho Choi, Taeyoul Choi, Cedric Dockendorf, Dimos PoulikakosAbstract:Many applications require delivery of small quantities of functional materials into locations on a substrate in the form of liquid solution. Consequently, interest in nongraphical inkjet printing is growing. In addition, higher resolution for printing flexible electronics is becoming more critical to enhance the performance of printing electronics. Since the resolution of inkjet process is limited by the nozzle size and the statistical variation of droplet flight and spreading phenomena, hybrid inkjet printing has emerged as an attractive processing method. In this work, surface monolayer protected gold nanoparticle was printed in a liquid solution form and cured by Laser irradiation to fabricate electrically conductive microlines on glass or polymer substrate at a reduced temperature. Continuous Laser Curing enabled local heating and the morphology could be controlled as well. Thermal penetration into the substrate could be minimized by using pulsed Laser beam. Nanoparticle film was effectively removed by applying femtosecond Laser, so that small feature size was obtained. Printing on a heated substrate has advantages over room temperature printing. The solvent evaporates soon after contact, so that a thick layer can be deposited with high jetting frequency. The rapid liquid evaporation also eliminated uneven wetting problems and the smaller feature size was obtained.
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an experimental investigation of microresistor Laser printing with gold nanoparticle laden inks
Applied Physics A, 2005Co-Authors: Nicole R. Bieri, Dimos Poulikakos, Jaewon Chung, Costas P GrigoropoulosAbstract:This paper presents an experimental investigation of the novel thermal manufacturing process of printing and Laser Curing of nanoparticle-laden inks that can produce functional microstructures such as electronic microresistors and interconnections for semiconductors and other devices. Of specific interest are the complex and interweaved transport phenomena involved, focusing on the absorption and diffusion processes of irradiated Laser energy influencing solvent vaporization, the nanoparticle Curing process, the substrate, and the final quality of the produced resistor. Parametric studies of the thermal process together with extensive microscopy analysis of the topography and resistivity measurements piece together a better understanding of the underlying physics and aid the development of the technology.
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conductor microstructures by Laser Curing of printed gold nanoparticle ink
Applied Physics Letters, 2004Co-Authors: Jaewon Chung, Seunghwan Ko, Nicole R. Bieri, Costas P Grigoropoulos, Dimos PoulikakosAbstract:The Laser-based Curing of printed nanoparticle ink to create microlines (resistors) of electrical resistivity approaching that of bulk gold was investigated. The present work relies on Laser absorption in both the nanoparticle ink and the sintered gold layer, as well as the transport of thermal energy in the substrate and the resulting solvent vaporization and nanoparticle deposition and sintering. The morphology and electrical properties of the gold line can be controlled by modulating the spatial distribution of the Laser beam intensity. Based on the understanding of the underlying physics, a process that circumvents a serious drawback on the functionality of cured gold microlines is produced. Microconductors with resistivity approaching that of bulk gold are produced, while loss of gold nanoparticles and cross sectional nonuniformities are avoided.
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Manufacturing of nanoscale thickness gold lines by Laser Curing of a discretely deposited nanoparticle suspension
Superlattices and Microstructures, 2004Co-Authors: Nicole R. Bieri, Dimos Poulikakos, Jaewon Chung, Costas P GrigoropoulosAbstract:The present work is focused on a novel method for the manufacturing of electric microconductors for semiconductors and other devices. Three different technologies are combined in this technique: controlled (drop on demand) printing, Laser Curing, and the employment of nanoparticles of matter, possessing markedly different properties (here, melting point) than their bulk counterparts. A modified on demand ink jet process is utilized to print electrically conducting line patterns from a suspension of gold nanoparticles in toluene. Microdroplets of 60-100 μm diameter are generated and deposited on a moving substrate such that the droplets form continuous lines. Focused Laser irradiation is utilized in order to evaporate the solvent, melt the metal nanoparticles in the suspension, and sinter the suspended particles to form continuous, electrically conducting gold microlines on a substrate. The ultrafine particles in the suspension have a diameter size range of 2-5 nm. Due to curvature and surface effects of such small particles, the melting point is markedly lower than that of bulk gold (1063°C). Atomic force microscopy and scanning electron microscopy have been employed to investigate the topology of the cured line. In situ visualization of the Curing process has been conducted. Results on the effect of the Laser irradiation power on the topology and width of the cured line, which is directly related to the electrical conductivity, are reported. © 2004 Elsevier Ltd. All rights reserved.
Nicole R. Bieri - One of the best experts on this subject based on the ideXlab platform.
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IMECE2002-33859 MANUFACTURING OF ELECTRICALLY CONDUCTIVE MICROSTRUCTURES BY DROPWISE PRINTING AND Laser Curing OF NANOPARTICLE-SUSPENSIONS
2020Co-Authors: Nicole R. Bieri, S E Haferl, D Poulikakos, C P GrigoropoulosAbstract:ABSTRACT A novel method for the manufacturing of electric microconductors for semiconductor and other devices is presented. The method brings together three technologies: controlled (on demand) printing, Laser Curing, and the employment of nanoparticles of matter, possessing markedly different properties (here, melting point) than their bulk counterparts. A suspension of gold particles in toluene solvent is employed to print electrically conducting line patterns utilizing a modified on demand ink jet printing process. To this end, microdroplets of 80-100 µm diameters are deposited on a moving substrate such that the droplets form continuous lines. Focused Laser irradiation is utilized in order to evaporate the solvent, melt the metal nanoparticles in the suspension, and sinter the suspended particles to form continuous, electrically conducting gold microlines on a substrate. The ultra fine particles in the suspension have a diameter size range of 2 -5 nm. Due to curvature effects of such small particles, the melting point is markedly lower (400°C) than that of bulk gold (1063°C). Thermodynamic aspects of the effect of particle size on the melting and evaporation temperatures of gold and toluene, respectively, are discussed in the paper. The structure and line width of the cured line as a function of the Laser irradiation power and stage velocity are reported in detail. Preliminary measurements of the electrical conductivity are represented
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Laser based hybrid inkjet printing of nanoink for flexible electronics
Proceedings of SPIE, 2005Co-Authors: Jaewon Chung, Nicole R. Bieri, Costas P Grigoropoulos, Yeonho Choi, Taeyoul Choi, Cedric Dockendorf, Dimos PoulikakosAbstract:Many applications require delivery of small quantities of functional materials into locations on a substrate in the form of liquid solution. Consequently, interest in nongraphical inkjet printing is growing. In addition, higher resolution for printing flexible electronics is becoming more critical to enhance the performance of printing electronics. Since the resolution of inkjet process is limited by the nozzle size and the statistical variation of droplet flight and spreading phenomena, hybrid inkjet printing has emerged as an attractive processing method. In this work, surface monolayer protected gold nanoparticle was printed in a liquid solution form and cured by Laser irradiation to fabricate electrically conductive microlines on glass or polymer substrate at a reduced temperature. Continuous Laser Curing enabled local heating and the morphology could be controlled as well. Thermal penetration into the substrate could be minimized by using pulsed Laser beam. Nanoparticle film was effectively removed by applying femtosecond Laser, so that small feature size was obtained. Printing on a heated substrate has advantages over room temperature printing. The solvent evaporates soon after contact, so that a thick layer can be deposited with high jetting frequency. The rapid liquid evaporation also eliminated uneven wetting problems and the smaller feature size was obtained.
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an experimental investigation of microresistor Laser printing with gold nanoparticle laden inks
Applied Physics A, 2005Co-Authors: Nicole R. Bieri, Dimos Poulikakos, Jaewon Chung, Costas P GrigoropoulosAbstract:This paper presents an experimental investigation of the novel thermal manufacturing process of printing and Laser Curing of nanoparticle-laden inks that can produce functional microstructures such as electronic microresistors and interconnections for semiconductors and other devices. Of specific interest are the complex and interweaved transport phenomena involved, focusing on the absorption and diffusion processes of irradiated Laser energy influencing solvent vaporization, the nanoparticle Curing process, the substrate, and the final quality of the produced resistor. Parametric studies of the thermal process together with extensive microscopy analysis of the topography and resistivity measurements piece together a better understanding of the underlying physics and aid the development of the technology.
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conductor microstructures by Laser Curing of printed gold nanoparticle ink
Applied Physics Letters, 2004Co-Authors: Jaewon Chung, Seunghwan Ko, Nicole R. Bieri, Costas P Grigoropoulos, Dimos PoulikakosAbstract:The Laser-based Curing of printed nanoparticle ink to create microlines (resistors) of electrical resistivity approaching that of bulk gold was investigated. The present work relies on Laser absorption in both the nanoparticle ink and the sintered gold layer, as well as the transport of thermal energy in the substrate and the resulting solvent vaporization and nanoparticle deposition and sintering. The morphology and electrical properties of the gold line can be controlled by modulating the spatial distribution of the Laser beam intensity. Based on the understanding of the underlying physics, a process that circumvents a serious drawback on the functionality of cured gold microlines is produced. Microconductors with resistivity approaching that of bulk gold are produced, while loss of gold nanoparticles and cross sectional nonuniformities are avoided.
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Manufacturing of nanoscale thickness gold lines by Laser Curing of a discretely deposited nanoparticle suspension
Superlattices and Microstructures, 2004Co-Authors: Nicole R. Bieri, Dimos Poulikakos, Jaewon Chung, Costas P GrigoropoulosAbstract:The present work is focused on a novel method for the manufacturing of electric microconductors for semiconductors and other devices. Three different technologies are combined in this technique: controlled (drop on demand) printing, Laser Curing, and the employment of nanoparticles of matter, possessing markedly different properties (here, melting point) than their bulk counterparts. A modified on demand ink jet process is utilized to print electrically conducting line patterns from a suspension of gold nanoparticles in toluene. Microdroplets of 60-100 μm diameter are generated and deposited on a moving substrate such that the droplets form continuous lines. Focused Laser irradiation is utilized in order to evaporate the solvent, melt the metal nanoparticles in the suspension, and sinter the suspended particles to form continuous, electrically conducting gold microlines on a substrate. The ultrafine particles in the suspension have a diameter size range of 2-5 nm. Due to curvature and surface effects of such small particles, the melting point is markedly lower than that of bulk gold (1063°C). Atomic force microscopy and scanning electron microscopy have been employed to investigate the topology of the cured line. In situ visualization of the Curing process has been conducted. Results on the effect of the Laser irradiation power on the topology and width of the cured line, which is directly related to the electrical conductivity, are reported. © 2004 Elsevier Ltd. All rights reserved.
Dimos Poulikakos - One of the best experts on this subject based on the ideXlab platform.
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Laser based hybrid inkjet printing of nanoink for flexible electronics
Proceedings of SPIE, 2005Co-Authors: Jaewon Chung, Nicole R. Bieri, Costas P Grigoropoulos, Yeonho Choi, Taeyoul Choi, Cedric Dockendorf, Dimos PoulikakosAbstract:Many applications require delivery of small quantities of functional materials into locations on a substrate in the form of liquid solution. Consequently, interest in nongraphical inkjet printing is growing. In addition, higher resolution for printing flexible electronics is becoming more critical to enhance the performance of printing electronics. Since the resolution of inkjet process is limited by the nozzle size and the statistical variation of droplet flight and spreading phenomena, hybrid inkjet printing has emerged as an attractive processing method. In this work, surface monolayer protected gold nanoparticle was printed in a liquid solution form and cured by Laser irradiation to fabricate electrically conductive microlines on glass or polymer substrate at a reduced temperature. Continuous Laser Curing enabled local heating and the morphology could be controlled as well. Thermal penetration into the substrate could be minimized by using pulsed Laser beam. Nanoparticle film was effectively removed by applying femtosecond Laser, so that small feature size was obtained. Printing on a heated substrate has advantages over room temperature printing. The solvent evaporates soon after contact, so that a thick layer can be deposited with high jetting frequency. The rapid liquid evaporation also eliminated uneven wetting problems and the smaller feature size was obtained.
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an experimental investigation of microresistor Laser printing with gold nanoparticle laden inks
Applied Physics A, 2005Co-Authors: Nicole R. Bieri, Dimos Poulikakos, Jaewon Chung, Costas P GrigoropoulosAbstract:This paper presents an experimental investigation of the novel thermal manufacturing process of printing and Laser Curing of nanoparticle-laden inks that can produce functional microstructures such as electronic microresistors and interconnections for semiconductors and other devices. Of specific interest are the complex and interweaved transport phenomena involved, focusing on the absorption and diffusion processes of irradiated Laser energy influencing solvent vaporization, the nanoparticle Curing process, the substrate, and the final quality of the produced resistor. Parametric studies of the thermal process together with extensive microscopy analysis of the topography and resistivity measurements piece together a better understanding of the underlying physics and aid the development of the technology.
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conductor microstructures by Laser Curing of printed gold nanoparticle ink
Applied Physics Letters, 2004Co-Authors: Jaewon Chung, Seunghwan Ko, Nicole R. Bieri, Costas P Grigoropoulos, Dimos PoulikakosAbstract:The Laser-based Curing of printed nanoparticle ink to create microlines (resistors) of electrical resistivity approaching that of bulk gold was investigated. The present work relies on Laser absorption in both the nanoparticle ink and the sintered gold layer, as well as the transport of thermal energy in the substrate and the resulting solvent vaporization and nanoparticle deposition and sintering. The morphology and electrical properties of the gold line can be controlled by modulating the spatial distribution of the Laser beam intensity. Based on the understanding of the underlying physics, a process that circumvents a serious drawback on the functionality of cured gold microlines is produced. Microconductors with resistivity approaching that of bulk gold are produced, while loss of gold nanoparticles and cross sectional nonuniformities are avoided.
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Manufacturing of nanoscale thickness gold lines by Laser Curing of a discretely deposited nanoparticle suspension
Superlattices and Microstructures, 2004Co-Authors: Nicole R. Bieri, Dimos Poulikakos, Jaewon Chung, Costas P GrigoropoulosAbstract:The present work is focused on a novel method for the manufacturing of electric microconductors for semiconductors and other devices. Three different technologies are combined in this technique: controlled (drop on demand) printing, Laser Curing, and the employment of nanoparticles of matter, possessing markedly different properties (here, melting point) than their bulk counterparts. A modified on demand ink jet process is utilized to print electrically conducting line patterns from a suspension of gold nanoparticles in toluene. Microdroplets of 60-100 μm diameter are generated and deposited on a moving substrate such that the droplets form continuous lines. Focused Laser irradiation is utilized in order to evaporate the solvent, melt the metal nanoparticles in the suspension, and sinter the suspended particles to form continuous, electrically conducting gold microlines on a substrate. The ultrafine particles in the suspension have a diameter size range of 2-5 nm. Due to curvature and surface effects of such small particles, the melting point is markedly lower than that of bulk gold (1063°C). Atomic force microscopy and scanning electron microscopy have been employed to investigate the topology of the cured line. In situ visualization of the Curing process has been conducted. Results on the effect of the Laser irradiation power on the topology and width of the cured line, which is directly related to the electrical conductivity, are reported. © 2004 Elsevier Ltd. All rights reserved.
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microconductors on polymer by nanoink printing and pulsed Laser Curing
Volume!, 2004Co-Authors: Jaewon Chung, Nicole R. Bieri, Costas P Grigoropoulos, Cedric Dockendorf, Dimos PoulikakosAbstract:In this study, pulsed Laser based Curing of a printed nanoink (nanoparticle ink) combined with moderate and controlled substrate heating was investigated to create microconductors at low enough temperatures appropriate for polymeric substrates. The present work relies on (1) melting temperature depression of nanoparticles smaller than a critical size, (2) DOD (drop on demand) jettability of nanoparticle ink and (3) small heat affected zone of pulsed Laser heating. In the experiment, gold nanoparticles of 3–7nm diameter dissolved in toluene solvent was used as ink. This nanoink was printed on a polymeric substrate which was heated to evaporate the solvent during or after printing. The overall morphology of the gold microline was determined during the printing process and was controlled by changing the substrate temperature during jetting. By employing a micro-second pulsed Laser, the nanoparticles were melted and coalesced at a low temperature to form a conductive microline which has 4–5 times higher resistivity than the bulk value without damaging the temperature sensitive polymeric substrate.Copyright © 2004 by ASME
Jaewon Chung - One of the best experts on this subject based on the ideXlab platform.
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Assembly of Acircular SnO2 Rod Using Optical Tweezers and Laser Curing of Metal Nanoparticles
Japanese Journal of Applied Physics, 2010Co-Authors: Chanhyuk Nam, Jaewon Chung, Daehie Hong, Jaeik Chung, Insung Hwang, Jong Heun Lee, Costas P GrigoropoulosAbstract:Acicular tin dioxide (SnO2) rods (1–2 µm in diameter, 5–20 µm long) were assembled and fused on the patterned gold electrode by an optical tweezer. In addition, the electrical contact between the assembled SnO2 rod and the gold electrode was improved by Laser Curing of gold nanoparticles and the subsequent sintering in the oven. Here, the nanoparticles covered the entire area of the assembled SnO2 rod by evaporating a droplet of nanoparticle solution dripped on the assembled SnO2 rod. Subsequently, nanoparticles near the contact area between the rod and electrode were locally cured by direct heating with a focused infrared Laser beam, which induced desorption of the surface monolayer. Therefore, the cured gold nanoparticles could be sintered after the non-Laser irradiated nanoparticles were cleaned by the initial solvent application. Without sintering of the nanoparticles, the resistance of the assembled SnO2 rod was measured over several MΩ. After the nanoparticle sintering it could be reduced to a few hundred kΩ, which was in agreement with the resistance of the assembled SnO2 rod.
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Laser based hybrid inkjet printing of nanoink for flexible electronics
Proceedings of SPIE, 2005Co-Authors: Jaewon Chung, Nicole R. Bieri, Costas P Grigoropoulos, Yeonho Choi, Taeyoul Choi, Cedric Dockendorf, Dimos PoulikakosAbstract:Many applications require delivery of small quantities of functional materials into locations on a substrate in the form of liquid solution. Consequently, interest in nongraphical inkjet printing is growing. In addition, higher resolution for printing flexible electronics is becoming more critical to enhance the performance of printing electronics. Since the resolution of inkjet process is limited by the nozzle size and the statistical variation of droplet flight and spreading phenomena, hybrid inkjet printing has emerged as an attractive processing method. In this work, surface monolayer protected gold nanoparticle was printed in a liquid solution form and cured by Laser irradiation to fabricate electrically conductive microlines on glass or polymer substrate at a reduced temperature. Continuous Laser Curing enabled local heating and the morphology could be controlled as well. Thermal penetration into the substrate could be minimized by using pulsed Laser beam. Nanoparticle film was effectively removed by applying femtosecond Laser, so that small feature size was obtained. Printing on a heated substrate has advantages over room temperature printing. The solvent evaporates soon after contact, so that a thick layer can be deposited with high jetting frequency. The rapid liquid evaporation also eliminated uneven wetting problems and the smaller feature size was obtained.
-
an experimental investigation of microresistor Laser printing with gold nanoparticle laden inks
Applied Physics A, 2005Co-Authors: Nicole R. Bieri, Dimos Poulikakos, Jaewon Chung, Costas P GrigoropoulosAbstract:This paper presents an experimental investigation of the novel thermal manufacturing process of printing and Laser Curing of nanoparticle-laden inks that can produce functional microstructures such as electronic microresistors and interconnections for semiconductors and other devices. Of specific interest are the complex and interweaved transport phenomena involved, focusing on the absorption and diffusion processes of irradiated Laser energy influencing solvent vaporization, the nanoparticle Curing process, the substrate, and the final quality of the produced resistor. Parametric studies of the thermal process together with extensive microscopy analysis of the topography and resistivity measurements piece together a better understanding of the underlying physics and aid the development of the technology.
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conductor microstructures by Laser Curing of printed gold nanoparticle ink
Applied Physics Letters, 2004Co-Authors: Jaewon Chung, Seunghwan Ko, Nicole R. Bieri, Costas P Grigoropoulos, Dimos PoulikakosAbstract:The Laser-based Curing of printed nanoparticle ink to create microlines (resistors) of electrical resistivity approaching that of bulk gold was investigated. The present work relies on Laser absorption in both the nanoparticle ink and the sintered gold layer, as well as the transport of thermal energy in the substrate and the resulting solvent vaporization and nanoparticle deposition and sintering. The morphology and electrical properties of the gold line can be controlled by modulating the spatial distribution of the Laser beam intensity. Based on the understanding of the underlying physics, a process that circumvents a serious drawback on the functionality of cured gold microlines is produced. Microconductors with resistivity approaching that of bulk gold are produced, while loss of gold nanoparticles and cross sectional nonuniformities are avoided.
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Manufacturing of nanoscale thickness gold lines by Laser Curing of a discretely deposited nanoparticle suspension
Superlattices and Microstructures, 2004Co-Authors: Nicole R. Bieri, Dimos Poulikakos, Jaewon Chung, Costas P GrigoropoulosAbstract:The present work is focused on a novel method for the manufacturing of electric microconductors for semiconductors and other devices. Three different technologies are combined in this technique: controlled (drop on demand) printing, Laser Curing, and the employment of nanoparticles of matter, possessing markedly different properties (here, melting point) than their bulk counterparts. A modified on demand ink jet process is utilized to print electrically conducting line patterns from a suspension of gold nanoparticles in toluene. Microdroplets of 60-100 μm diameter are generated and deposited on a moving substrate such that the droplets form continuous lines. Focused Laser irradiation is utilized in order to evaporate the solvent, melt the metal nanoparticles in the suspension, and sinter the suspended particles to form continuous, electrically conducting gold microlines on a substrate. The ultrafine particles in the suspension have a diameter size range of 2-5 nm. Due to curvature and surface effects of such small particles, the melting point is markedly lower than that of bulk gold (1063°C). Atomic force microscopy and scanning electron microscopy have been employed to investigate the topology of the cured line. In situ visualization of the Curing process has been conducted. Results on the effect of the Laser irradiation power on the topology and width of the cured line, which is directly related to the electrical conductivity, are reported. © 2004 Elsevier Ltd. All rights reserved.
Richard J Blankenau - One of the best experts on this subject based on the ideXlab platform.
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Laser Curing of dental materials
Dental Clinics of North America, 2000Co-Authors: G L Powell, Richard J BlankenauAbstract:Research supports the use of the argon Laser in dentistry. Used at powers of 250 mW +/- 50 mW for 10 seconds per increment, the argon Laser provides good Curing of light-activated restorative materials in a shorter period of time with equal or better physical properties as compared to the conventional halogen Curing light. When used at approximately 1.5 W, it is a good soft tissue surgical instrument that cuts with little or no bleeding and minimal postoperative pain. The future looks bright for the use of the argon Laser in other areas, such as decay prevention or pulpal treatments for primary teeth as well as an adjunct to endodontic therapy.
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effects of argon Laser Curing on dentin shear bond strengths
Journal of Clinical Laser Medicine & Surgery, 1996Co-Authors: G L Powell, Richard J BlankenauAbstract:ABSTRACT Previous studies have demonstrated the ability of the argon Laser to polymerize light-activated materials and improve enamel shear bond strengths. This study was conducted to evaluate the effects of the argon Laser on dentin shear bond strengths of current dentin bonding systems. Argon Laser (HGM Model 8) at 231 and 280 mW, 5 sec bonding agent, 10 sec composite, and a conventional Curing light (Translux EC/Kulzer) at 10 sec bonding agent, 20 sec composite were used to polymerize samples of dentin bonding systems [Scotchbond Multi-Purpose Plus (3M) and Prime Bond (Dentsply/Caulk), both with TPH (Dentsply/Caulk) composite]. A flat dentin bonding site (600 grit) was prepared on the buccal surface of extracted human teeth. Twelve samples were made for each set of parameters for both Laser and conventional light totaling 48 samples. Samples were stored in distilled water in light-proof containers for 24 h at 37°C. Shear bond strengths (MPa) were determined for each sample on the Instron testing machin...
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effects of argon Laser Curing on dentin shear bond strengths
Lasers in Dentistry II, 1996Co-Authors: G L Powell, Richard J BlankenauAbstract:Previous studies have demonstrated the ability of the argon Laser to polymerize light activated materials and improve enamel shear bond strengths. This study was conducted to evaluate the effects of the argon Laser on dentin shear bond strengths of current dentin bonding systems. Argon Laser (HGM Model 8) at 231 mw and 280 mw, 5 second bonding agent, 10 seconds composite and a conventional Curing light (Translux EC/Kulzer) at 10 seconds bonding agent, 20 second composite were used to polymerize samples of dentin bonding systems: Scotchbond Multi-Purpose Plus (3M) and Prime Bond (Dentsply/Caulk), both with TPH (Dentsply/Caulk) composite. A flat dentin bonding site (600 grit) was prepared on the buccal surface of extracted human teeth. Twelve samples were made for each set of parameters for both Laser and conventional light totaling 60 samples. Samples were stored in distilled water in light- proof containers for 24 hours at 37 degree(s)C. Shear bond strengths (MPa) were determined for each sample on the Instron testing machine. Mean values were calculated for each set of data and ANOVA with Fisher PLSD were used for statistical analysis. The argon Laser provided bond strengths that were 21 - 24% greater than those of the conventional Curing light system.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
