The Experts below are selected from a list of 15 Experts worldwide ranked by ideXlab platform
Yoshikazu Giga - One of the best experts on this subject based on the ideXlab platform.
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growth rate of crystal surfaces with several dislocation centers
Crystal Growth & Design, 2018Co-Authors: Takeshi Ohtsuka, Yenhsi Richard Tsai, Yoshikazu GigaAbstract:We studied analytically and numerically the growth rate of a crystal surface growing by several Screw dislocations. We observed some discrepancy between the growth rates computed by our level set method ( J. Sci. Comput. 2015, 62, 831−874) and those reported by the classical paper of Burton et al. ( Philos. Trans. R. Soc. London A 1951, 243, 299−358). To resolve the discrepancy, we propose a few improved estimates on the growth rate in several configurations. In particular, we give a quantitative definition of the critical distance of Corotating Screw dislocations under which the effective growth resembles that of a single spiral. We further study the growth rate of a crystal surface containing a group of Screw dislocations. The proposed new estimates are in agreement with numerical simulations using the algorithm published by the authors ( J. Sci. Comput. 2015, 62, 831−874).
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Growth Rate of Crystal Surfaces with Several Dislocation Centers
2018Co-Authors: Takeshi Ohtsuka, Yenhsi Richard Tsai, Yoshikazu GigaAbstract:We studied analytically and numerically the growth rate of a crystal surface growing by several Screw dislocations. We observed some discrepancy between the growth rates computed by our level set method (J. Sci. Comput. 2015, 62, 831−874) and those reported by the classical paper of Burton et al. (Philos. Trans. R. Soc. London A 1951, 243, 299−358). To resolve the discrepancy, we propose a few improved estimates on the growth rate in several configurations. In particular, we give a quantitative definition of the critical distance of Corotating Screw dislocations under which the effective growth resembles that of a single spiral. We further study the growth rate of a crystal surface containing a group of Screw dislocations. The proposed new estimates are in agreement with numerical simulations using the algorithm published by the authors (J. Sci. Comput. 2015, 62, 831−874)
Takeshi Ohtsuka - One of the best experts on this subject based on the ideXlab platform.
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growth rate of crystal surfaces with several dislocation centers
Crystal Growth & Design, 2018Co-Authors: Takeshi Ohtsuka, Yenhsi Richard Tsai, Yoshikazu GigaAbstract:We studied analytically and numerically the growth rate of a crystal surface growing by several Screw dislocations. We observed some discrepancy between the growth rates computed by our level set method ( J. Sci. Comput. 2015, 62, 831−874) and those reported by the classical paper of Burton et al. ( Philos. Trans. R. Soc. London A 1951, 243, 299−358). To resolve the discrepancy, we propose a few improved estimates on the growth rate in several configurations. In particular, we give a quantitative definition of the critical distance of Corotating Screw dislocations under which the effective growth resembles that of a single spiral. We further study the growth rate of a crystal surface containing a group of Screw dislocations. The proposed new estimates are in agreement with numerical simulations using the algorithm published by the authors ( J. Sci. Comput. 2015, 62, 831−874).
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Growth Rate of Crystal Surfaces with Several Dislocation Centers
2018Co-Authors: Takeshi Ohtsuka, Yenhsi Richard Tsai, Yoshikazu GigaAbstract:We studied analytically and numerically the growth rate of a crystal surface growing by several Screw dislocations. We observed some discrepancy between the growth rates computed by our level set method (J. Sci. Comput. 2015, 62, 831−874) and those reported by the classical paper of Burton et al. (Philos. Trans. R. Soc. London A 1951, 243, 299−358). To resolve the discrepancy, we propose a few improved estimates on the growth rate in several configurations. In particular, we give a quantitative definition of the critical distance of Corotating Screw dislocations under which the effective growth resembles that of a single spiral. We further study the growth rate of a crystal surface containing a group of Screw dislocations. The proposed new estimates are in agreement with numerical simulations using the algorithm published by the authors (J. Sci. Comput. 2015, 62, 831−874)
Yenhsi Richard Tsai - One of the best experts on this subject based on the ideXlab platform.
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growth rate of crystal surfaces with several dislocation centers
Crystal Growth & Design, 2018Co-Authors: Takeshi Ohtsuka, Yenhsi Richard Tsai, Yoshikazu GigaAbstract:We studied analytically and numerically the growth rate of a crystal surface growing by several Screw dislocations. We observed some discrepancy between the growth rates computed by our level set method ( J. Sci. Comput. 2015, 62, 831−874) and those reported by the classical paper of Burton et al. ( Philos. Trans. R. Soc. London A 1951, 243, 299−358). To resolve the discrepancy, we propose a few improved estimates on the growth rate in several configurations. In particular, we give a quantitative definition of the critical distance of Corotating Screw dislocations under which the effective growth resembles that of a single spiral. We further study the growth rate of a crystal surface containing a group of Screw dislocations. The proposed new estimates are in agreement with numerical simulations using the algorithm published by the authors ( J. Sci. Comput. 2015, 62, 831−874).
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Growth Rate of Crystal Surfaces with Several Dislocation Centers
2018Co-Authors: Takeshi Ohtsuka, Yenhsi Richard Tsai, Yoshikazu GigaAbstract:We studied analytically and numerically the growth rate of a crystal surface growing by several Screw dislocations. We observed some discrepancy between the growth rates computed by our level set method (J. Sci. Comput. 2015, 62, 831−874) and those reported by the classical paper of Burton et al. (Philos. Trans. R. Soc. London A 1951, 243, 299−358). To resolve the discrepancy, we propose a few improved estimates on the growth rate in several configurations. In particular, we give a quantitative definition of the critical distance of Corotating Screw dislocations under which the effective growth resembles that of a single spiral. We further study the growth rate of a crystal surface containing a group of Screw dislocations. The proposed new estimates are in agreement with numerical simulations using the algorithm published by the authors (J. Sci. Comput. 2015, 62, 831−874)
Raj Patel - One of the best experts on this subject based on the ideXlab platform.
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replication of mixing achieved in large Corotating Screw extruders using novel laboratory 10 100 g minimixer
Plastics Rubber and Composites, 2008Co-Authors: Hadj Benkreira, Martin Gale, R Butterfield, Raj PatelAbstract:AbstractWhen compounding polymers with additives to develop materials at specifications (colouring plastics is the simplest example), the difficulties is in getting the formulation right the first time. Also, when developing completely new materials such as in nanotechnology applications, there is a need to carry out the initial trials safely and with as small quantities as possible to enable a wide range of experimentation. With traditional applications, often the initial compounding formulation is carried out using small single or twin Screw extruders but with machines that have a fair output to instruct the large scale operation. This step is costly in material wastage and time but more importantly it often does not provide the right formulation which in turn results in bigger wastage cost at the industrial scale before the right formulation is eventually obtained. With the very new material formulations, any reduction in cost of development is always essential. With these aims in mind, the authors hav...
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Replication of mixing achieved in large Corotating Screw extruders using novel laboratory 10–100 g minimixer
Plastics Rubber and Composites, 2008Co-Authors: Hadj Benkreira, Martin Gale, R Butterfield, Raj PatelAbstract:AbstractWhen compounding polymers with additives to develop materials at specifications (colouring plastics is the simplest example), the difficulties is in getting the formulation right the first time. Also, when developing completely new materials such as in nanotechnology applications, there is a need to carry out the initial trials safely and with as small quantities as possible to enable a wide range of experimentation. With traditional applications, often the initial compounding formulation is carried out using small single or twin Screw extruders but with machines that have a fair output to instruct the large scale operation. This step is costly in material wastage and time but more importantly it often does not provide the right formulation which in turn results in bigger wastage cost at the industrial scale before the right formulation is eventually obtained. With the very new material formulations, any reduction in cost of development is always essential. With these aims in mind, the authors hav...
Hadj Benkreira - One of the best experts on this subject based on the ideXlab platform.
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replication of mixing achieved in large Corotating Screw extruders using novel laboratory 10 100 g minimixer
Plastics Rubber and Composites, 2008Co-Authors: Hadj Benkreira, Martin Gale, R Butterfield, Raj PatelAbstract:AbstractWhen compounding polymers with additives to develop materials at specifications (colouring plastics is the simplest example), the difficulties is in getting the formulation right the first time. Also, when developing completely new materials such as in nanotechnology applications, there is a need to carry out the initial trials safely and with as small quantities as possible to enable a wide range of experimentation. With traditional applications, often the initial compounding formulation is carried out using small single or twin Screw extruders but with machines that have a fair output to instruct the large scale operation. This step is costly in material wastage and time but more importantly it often does not provide the right formulation which in turn results in bigger wastage cost at the industrial scale before the right formulation is eventually obtained. With the very new material formulations, any reduction in cost of development is always essential. With these aims in mind, the authors hav...
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Replication of mixing achieved in large Corotating Screw extruders using novel laboratory 10–100 g minimixer
Plastics Rubber and Composites, 2008Co-Authors: Hadj Benkreira, Martin Gale, R Butterfield, Raj PatelAbstract:AbstractWhen compounding polymers with additives to develop materials at specifications (colouring plastics is the simplest example), the difficulties is in getting the formulation right the first time. Also, when developing completely new materials such as in nanotechnology applications, there is a need to carry out the initial trials safely and with as small quantities as possible to enable a wide range of experimentation. With traditional applications, often the initial compounding formulation is carried out using small single or twin Screw extruders but with machines that have a fair output to instruct the large scale operation. This step is costly in material wastage and time but more importantly it often does not provide the right formulation which in turn results in bigger wastage cost at the industrial scale before the right formulation is eventually obtained. With the very new material formulations, any reduction in cost of development is always essential. With these aims in mind, the authors hav...
