The Experts below are selected from a list of 60 Experts worldwide ranked by ideXlab platform
Shinro Mashiko - One of the best experts on this subject based on the ideXlab platform.
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laying out circuits on asynchronous Cellular Arrays a step towards feasible nanocomputers
Nanotechnology, 2003Co-Authors: Ferdinand Peper, Jia Lee, Susumu Adachi, Shinro MashikoAbstract:Opinions differ widely as to the type of architecture most suitable for achieving the tremendous performance gains expected with computers built by nanotechnology. In this context little research effort has gone into asynchronous Cellular Arrays, an architecture that is promising for nanocomputers due to (1) its regular structure of locally interconnected cells, and (2) its asynchronous mode of timing. The first facilitates bottom-up manufacturing techniques like directed self-assembly. The second allows the cells' operations to be timed randomly and independently of each other, mitigating the problems accompanying a central clock, like high power consumption and heat dissipation. The advantages of asynchronous timing notwithstanding, it makes computation less straightforward. Attempts to compute on asynchronous Cellular Arrays have therefore focused on simulating synchronous operation on them, at the price of more complex cells. Here we advance a more effective approach based on the configuration on an asynchronous Cellular array of delay-insensitive circuits, a type of asynchronous circuit that is robust to arbitrary delays in signals. Our results may be a step towards future nanocomputers with a huge number of autonomously operating cells organized in homogeneous Arrays that can be programmed by configuring them as delay-insensitive circuits.
Ferdinand Peper - One of the best experts on this subject based on the ideXlab platform.
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laying out circuits on asynchronous Cellular Arrays a step towards feasible nanocomputers
Nanotechnology, 2003Co-Authors: Ferdinand Peper, Jia Lee, Susumu Adachi, Shinro MashikoAbstract:Opinions differ widely as to the type of architecture most suitable for achieving the tremendous performance gains expected with computers built by nanotechnology. In this context little research effort has gone into asynchronous Cellular Arrays, an architecture that is promising for nanocomputers due to (1) its regular structure of locally interconnected cells, and (2) its asynchronous mode of timing. The first facilitates bottom-up manufacturing techniques like directed self-assembly. The second allows the cells' operations to be timed randomly and independently of each other, mitigating the problems accompanying a central clock, like high power consumption and heat dissipation. The advantages of asynchronous timing notwithstanding, it makes computation less straightforward. Attempts to compute on asynchronous Cellular Arrays have therefore focused on simulating synchronous operation on them, at the price of more complex cells. Here we advance a more effective approach based on the configuration on an asynchronous Cellular array of delay-insensitive circuits, a type of asynchronous circuit that is robust to arbitrary delays in signals. Our results may be a step towards future nanocomputers with a huge number of autonomously operating cells organized in homogeneous Arrays that can be programmed by configuring them as delay-insensitive circuits.
Jia Lee - One of the best experts on this subject based on the ideXlab platform.
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laying out circuits on asynchronous Cellular Arrays a step towards feasible nanocomputers
Nanotechnology, 2003Co-Authors: Ferdinand Peper, Jia Lee, Susumu Adachi, Shinro MashikoAbstract:Opinions differ widely as to the type of architecture most suitable for achieving the tremendous performance gains expected with computers built by nanotechnology. In this context little research effort has gone into asynchronous Cellular Arrays, an architecture that is promising for nanocomputers due to (1) its regular structure of locally interconnected cells, and (2) its asynchronous mode of timing. The first facilitates bottom-up manufacturing techniques like directed self-assembly. The second allows the cells' operations to be timed randomly and independently of each other, mitigating the problems accompanying a central clock, like high power consumption and heat dissipation. The advantages of asynchronous timing notwithstanding, it makes computation less straightforward. Attempts to compute on asynchronous Cellular Arrays have therefore focused on simulating synchronous operation on them, at the price of more complex cells. Here we advance a more effective approach based on the configuration on an asynchronous Cellular array of delay-insensitive circuits, a type of asynchronous circuit that is robust to arbitrary delays in signals. Our results may be a step towards future nanocomputers with a huge number of autonomously operating cells organized in homogeneous Arrays that can be programmed by configuring them as delay-insensitive circuits.
Susumu Adachi - One of the best experts on this subject based on the ideXlab platform.
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laying out circuits on asynchronous Cellular Arrays a step towards feasible nanocomputers
Nanotechnology, 2003Co-Authors: Ferdinand Peper, Jia Lee, Susumu Adachi, Shinro MashikoAbstract:Opinions differ widely as to the type of architecture most suitable for achieving the tremendous performance gains expected with computers built by nanotechnology. In this context little research effort has gone into asynchronous Cellular Arrays, an architecture that is promising for nanocomputers due to (1) its regular structure of locally interconnected cells, and (2) its asynchronous mode of timing. The first facilitates bottom-up manufacturing techniques like directed self-assembly. The second allows the cells' operations to be timed randomly and independently of each other, mitigating the problems accompanying a central clock, like high power consumption and heat dissipation. The advantages of asynchronous timing notwithstanding, it makes computation less straightforward. Attempts to compute on asynchronous Cellular Arrays have therefore focused on simulating synchronous operation on them, at the price of more complex cells. Here we advance a more effective approach based on the configuration on an asynchronous Cellular array of delay-insensitive circuits, a type of asynchronous circuit that is robust to arbitrary delays in signals. Our results may be a step towards future nanocomputers with a huge number of autonomously operating cells organized in homogeneous Arrays that can be programmed by configuring them as delay-insensitive circuits.
J R G Evans - One of the best experts on this subject based on the ideXlab platform.
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Cellular Arrays of alumina fibres
Journal of Materials Science, 2001Co-Authors: H. X. Peng, J R G EvansAbstract:In conventional short fibre reinforced metal matrix composites, the quest is for a method of processing that will provide a homogeneous and preferably random arrangement of fibres. In contrast, recently developed contiguity models for multiphase composites on the one hand, and finite element modelling of structures on the other, independently predict that the modulus enhancement provided by short-fibre reinforcement can be improved if the fibres are arranged in a Cellular structure. Furthermore, provided the metallic phase is continuous, the toughness of the composite may also thereby be enhanced. This paper, which is part of an attempt to explore the question of reinforcement arrangements, presents a method for making ceramic preforms for MMCs in which a polymeric foam is used to position the fibres in Cellular array. The polymer is then removed by pyrolysis and the preform of fibres is strengthened by sintering. During high temperature sintering, phase changes and grain growth degraded the fibre. Methods of increasing the compressive strength of the preform by incorporation of alumina particles and by subsequent infiltration are described and compared.