The Experts below are selected from a list of 132798 Experts worldwide ranked by ideXlab platform
Mansoo Choi - One of the best experts on this subject based on the ideXlab platform.
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ultrasensitive mechanical crack based sensor inspired by the spider Sensory System
Nature, 2014Co-Authors: Daeshik Kang, Linfeng Piao, Byeonghak Park, Sung Soo Shin, Yong Whan Choi, Peter V Pikhitsa, Mansoo ChoiAbstract:A mechanical crack-based sensor inspired by the mechanism spiders use to sense minute variations in stress offers ultrahigh sensitivity to pressure and vibration and can easily be mounted on human skin for the purposes of speech recognition and the monitoring of physiological signals. Usually when spiders are mentioned in a biomimetic context the remarkable tensile strength of spider silk is discussed. But in this study, Mansoo Choi and colleagues take inspiration from the slit Sensory organs that a spider uses to detect vibrations in its web. The authors have developed a nanoscale mechanical crack-based sensor consisting of a thin platinum layer, in which tiny cracks are produced in a controlled way, on a flexible polymer sheet. Vibrations and changes in pressure are measured as changes in conductivity in the platinum sheet as the cracks open and close. The potential of the device is demonstrated with a variety of examples such as with a pixelated sensor that can detect a flapping ladybird and a flexible sensor that can measure and replay music. It can easily be mounted on human skin for purposes such as speech recognition and the monitoring of physiological signals. Recently developed flexible mechanosensors based on inorganic silicon1,2,3, organic semiconductors4,5,6, carbon nanotubes7, graphene platelets8, pressure-sensitive rubber9 and self-powered devices10,11 are highly sensitive and can be applied to human skin. However, the development of a multifunctional sensor satisfying the requirements of ultrahigh mechanosensitivity, flexibility and durability remains a challenge. In nature, spiders sense extremely small variations in mechanical stress using crack-shaped slit organs near their leg joints12. Here we demonstrate that sensors based on nanoscale crack junctions and inspired by the geometry of a spider’s slit organ can attain ultrahigh sensitivity and serve multiple purposes. The sensors are sensitive to strain (with a gauge factor of over 2,000 in the 0–2 per cent strain range) and vibration (with the ability to detect amplitudes of approximately 10 nanometres). The device is reversible, reproducible, durable and mechanically flexible, and can thus be easily mounted on human skin as an electronic multipixel array. The ultrahigh mechanosensitivity is attributed to the disconnection–reconnection process undergone by the zip-like nanoscale crack junctions under strain or vibration. The proposed theoretical model is consistent with experimental data that we report here. We also demonstrate that sensors based on nanoscale crack junctions are applicable to highly selective speech pattern recognition and the detection of physiological signals. The nanoscale crack junction-based Sensory System could be useful in diverse applications requiring ultrahigh displacement sensitivity.
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Ultrasensitive mechanical crack-based sensor inspired by the spider Sensory System
Nature, 2014Co-Authors: Daeshik Kang, Linfeng Piao, Byeonghak Park, Sung Soo Shin, Kahp Yang Suh, Yong Whan Choi, Chanseok Lee, Peter V Pikhitsa, Tae Il Kim, Mansoo ChoiAbstract:Recently developed flexible mechanosensors based on inorganic silicon, organic semiconductors, carbon nanotubes, graphene platelets, pressure-sensitive rubber and self-powered devices are highly sensitive and can be applied to human skin. However, the development of a multifunctional sensor satisfying the requirements of ultrahigh mechanosensitivity, flexibility and durability remains a challenge. In nature, spiders sense extremely small variations in mechanical stress using crack-shaped slit organs near their leg joints. Here we demonstrate that sensors based on nanoscale crack junctions and inspired by the geometry of a spider's slit organ can attain ultrahigh sensitivity and serve multiple purposes. The sensors are sensitive to strain (with a gauge factor of over 2,000 in the 0-2 per cent strain range) and vibration (with the ability to detect amplitudes of approximately 10 nanometres). The device is reversible, reproducible, durable and mechanically flexible, and can thus be easily mounted on human skin as an electronic multipixel array. The ultrahigh mechanosensitivity is attributed to the disconnection-reconnection process undergone by the zip-like nanoscale crack junctions under strain or vibration. The proposed theoretical model is consistent with experimental data that we report here. We also demonstrate that sensors based on nanoscale crack junctions are applicable to highly selective speech pattern recognition and the detection of physiological signals. The nanoscale crack junction-based Sensory System could be useful in diverse applications requiring ultrahigh displacement sensitivity.
Daeshik Kang - One of the best experts on this subject based on the ideXlab platform.
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ultrasensitive mechanical crack based sensor inspired by the spider Sensory System
Nature, 2014Co-Authors: Daeshik Kang, Linfeng Piao, Byeonghak Park, Sung Soo Shin, Yong Whan Choi, Peter V Pikhitsa, Mansoo ChoiAbstract:A mechanical crack-based sensor inspired by the mechanism spiders use to sense minute variations in stress offers ultrahigh sensitivity to pressure and vibration and can easily be mounted on human skin for the purposes of speech recognition and the monitoring of physiological signals. Usually when spiders are mentioned in a biomimetic context the remarkable tensile strength of spider silk is discussed. But in this study, Mansoo Choi and colleagues take inspiration from the slit Sensory organs that a spider uses to detect vibrations in its web. The authors have developed a nanoscale mechanical crack-based sensor consisting of a thin platinum layer, in which tiny cracks are produced in a controlled way, on a flexible polymer sheet. Vibrations and changes in pressure are measured as changes in conductivity in the platinum sheet as the cracks open and close. The potential of the device is demonstrated with a variety of examples such as with a pixelated sensor that can detect a flapping ladybird and a flexible sensor that can measure and replay music. It can easily be mounted on human skin for purposes such as speech recognition and the monitoring of physiological signals. Recently developed flexible mechanosensors based on inorganic silicon1,2,3, organic semiconductors4,5,6, carbon nanotubes7, graphene platelets8, pressure-sensitive rubber9 and self-powered devices10,11 are highly sensitive and can be applied to human skin. However, the development of a multifunctional sensor satisfying the requirements of ultrahigh mechanosensitivity, flexibility and durability remains a challenge. In nature, spiders sense extremely small variations in mechanical stress using crack-shaped slit organs near their leg joints12. Here we demonstrate that sensors based on nanoscale crack junctions and inspired by the geometry of a spider’s slit organ can attain ultrahigh sensitivity and serve multiple purposes. The sensors are sensitive to strain (with a gauge factor of over 2,000 in the 0–2 per cent strain range) and vibration (with the ability to detect amplitudes of approximately 10 nanometres). The device is reversible, reproducible, durable and mechanically flexible, and can thus be easily mounted on human skin as an electronic multipixel array. The ultrahigh mechanosensitivity is attributed to the disconnection–reconnection process undergone by the zip-like nanoscale crack junctions under strain or vibration. The proposed theoretical model is consistent with experimental data that we report here. We also demonstrate that sensors based on nanoscale crack junctions are applicable to highly selective speech pattern recognition and the detection of physiological signals. The nanoscale crack junction-based Sensory System could be useful in diverse applications requiring ultrahigh displacement sensitivity.
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Ultrasensitive mechanical crack-based sensor inspired by the spider Sensory System
Nature, 2014Co-Authors: Daeshik Kang, Linfeng Piao, Byeonghak Park, Sung Soo Shin, Kahp Yang Suh, Yong Whan Choi, Chanseok Lee, Peter V Pikhitsa, Tae Il Kim, Mansoo ChoiAbstract:Recently developed flexible mechanosensors based on inorganic silicon, organic semiconductors, carbon nanotubes, graphene platelets, pressure-sensitive rubber and self-powered devices are highly sensitive and can be applied to human skin. However, the development of a multifunctional sensor satisfying the requirements of ultrahigh mechanosensitivity, flexibility and durability remains a challenge. In nature, spiders sense extremely small variations in mechanical stress using crack-shaped slit organs near their leg joints. Here we demonstrate that sensors based on nanoscale crack junctions and inspired by the geometry of a spider's slit organ can attain ultrahigh sensitivity and serve multiple purposes. The sensors are sensitive to strain (with a gauge factor of over 2,000 in the 0-2 per cent strain range) and vibration (with the ability to detect amplitudes of approximately 10 nanometres). The device is reversible, reproducible, durable and mechanically flexible, and can thus be easily mounted on human skin as an electronic multipixel array. The ultrahigh mechanosensitivity is attributed to the disconnection-reconnection process undergone by the zip-like nanoscale crack junctions under strain or vibration. The proposed theoretical model is consistent with experimental data that we report here. We also demonstrate that sensors based on nanoscale crack junctions are applicable to highly selective speech pattern recognition and the detection of physiological signals. The nanoscale crack junction-based Sensory System could be useful in diverse applications requiring ultrahigh displacement sensitivity.
Peter V Pikhitsa - One of the best experts on this subject based on the ideXlab platform.
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ultrasensitive mechanical crack based sensor inspired by the spider Sensory System
Nature, 2014Co-Authors: Daeshik Kang, Linfeng Piao, Byeonghak Park, Sung Soo Shin, Yong Whan Choi, Peter V Pikhitsa, Mansoo ChoiAbstract:A mechanical crack-based sensor inspired by the mechanism spiders use to sense minute variations in stress offers ultrahigh sensitivity to pressure and vibration and can easily be mounted on human skin for the purposes of speech recognition and the monitoring of physiological signals. Usually when spiders are mentioned in a biomimetic context the remarkable tensile strength of spider silk is discussed. But in this study, Mansoo Choi and colleagues take inspiration from the slit Sensory organs that a spider uses to detect vibrations in its web. The authors have developed a nanoscale mechanical crack-based sensor consisting of a thin platinum layer, in which tiny cracks are produced in a controlled way, on a flexible polymer sheet. Vibrations and changes in pressure are measured as changes in conductivity in the platinum sheet as the cracks open and close. The potential of the device is demonstrated with a variety of examples such as with a pixelated sensor that can detect a flapping ladybird and a flexible sensor that can measure and replay music. It can easily be mounted on human skin for purposes such as speech recognition and the monitoring of physiological signals. Recently developed flexible mechanosensors based on inorganic silicon1,2,3, organic semiconductors4,5,6, carbon nanotubes7, graphene platelets8, pressure-sensitive rubber9 and self-powered devices10,11 are highly sensitive and can be applied to human skin. However, the development of a multifunctional sensor satisfying the requirements of ultrahigh mechanosensitivity, flexibility and durability remains a challenge. In nature, spiders sense extremely small variations in mechanical stress using crack-shaped slit organs near their leg joints12. Here we demonstrate that sensors based on nanoscale crack junctions and inspired by the geometry of a spider’s slit organ can attain ultrahigh sensitivity and serve multiple purposes. The sensors are sensitive to strain (with a gauge factor of over 2,000 in the 0–2 per cent strain range) and vibration (with the ability to detect amplitudes of approximately 10 nanometres). The device is reversible, reproducible, durable and mechanically flexible, and can thus be easily mounted on human skin as an electronic multipixel array. The ultrahigh mechanosensitivity is attributed to the disconnection–reconnection process undergone by the zip-like nanoscale crack junctions under strain or vibration. The proposed theoretical model is consistent with experimental data that we report here. We also demonstrate that sensors based on nanoscale crack junctions are applicable to highly selective speech pattern recognition and the detection of physiological signals. The nanoscale crack junction-based Sensory System could be useful in diverse applications requiring ultrahigh displacement sensitivity.
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Ultrasensitive mechanical crack-based sensor inspired by the spider Sensory System
Nature, 2014Co-Authors: Daeshik Kang, Linfeng Piao, Byeonghak Park, Sung Soo Shin, Kahp Yang Suh, Yong Whan Choi, Chanseok Lee, Peter V Pikhitsa, Tae Il Kim, Mansoo ChoiAbstract:Recently developed flexible mechanosensors based on inorganic silicon, organic semiconductors, carbon nanotubes, graphene platelets, pressure-sensitive rubber and self-powered devices are highly sensitive and can be applied to human skin. However, the development of a multifunctional sensor satisfying the requirements of ultrahigh mechanosensitivity, flexibility and durability remains a challenge. In nature, spiders sense extremely small variations in mechanical stress using crack-shaped slit organs near their leg joints. Here we demonstrate that sensors based on nanoscale crack junctions and inspired by the geometry of a spider's slit organ can attain ultrahigh sensitivity and serve multiple purposes. The sensors are sensitive to strain (with a gauge factor of over 2,000 in the 0-2 per cent strain range) and vibration (with the ability to detect amplitudes of approximately 10 nanometres). The device is reversible, reproducible, durable and mechanically flexible, and can thus be easily mounted on human skin as an electronic multipixel array. The ultrahigh mechanosensitivity is attributed to the disconnection-reconnection process undergone by the zip-like nanoscale crack junctions under strain or vibration. The proposed theoretical model is consistent with experimental data that we report here. We also demonstrate that sensors based on nanoscale crack junctions are applicable to highly selective speech pattern recognition and the detection of physiological signals. The nanoscale crack junction-based Sensory System could be useful in diverse applications requiring ultrahigh displacement sensitivity.
Linfeng Piao - One of the best experts on this subject based on the ideXlab platform.
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ultrasensitive mechanical crack based sensor inspired by the spider Sensory System
Nature, 2014Co-Authors: Daeshik Kang, Linfeng Piao, Byeonghak Park, Sung Soo Shin, Yong Whan Choi, Peter V Pikhitsa, Mansoo ChoiAbstract:A mechanical crack-based sensor inspired by the mechanism spiders use to sense minute variations in stress offers ultrahigh sensitivity to pressure and vibration and can easily be mounted on human skin for the purposes of speech recognition and the monitoring of physiological signals. Usually when spiders are mentioned in a biomimetic context the remarkable tensile strength of spider silk is discussed. But in this study, Mansoo Choi and colleagues take inspiration from the slit Sensory organs that a spider uses to detect vibrations in its web. The authors have developed a nanoscale mechanical crack-based sensor consisting of a thin platinum layer, in which tiny cracks are produced in a controlled way, on a flexible polymer sheet. Vibrations and changes in pressure are measured as changes in conductivity in the platinum sheet as the cracks open and close. The potential of the device is demonstrated with a variety of examples such as with a pixelated sensor that can detect a flapping ladybird and a flexible sensor that can measure and replay music. It can easily be mounted on human skin for purposes such as speech recognition and the monitoring of physiological signals. Recently developed flexible mechanosensors based on inorganic silicon1,2,3, organic semiconductors4,5,6, carbon nanotubes7, graphene platelets8, pressure-sensitive rubber9 and self-powered devices10,11 are highly sensitive and can be applied to human skin. However, the development of a multifunctional sensor satisfying the requirements of ultrahigh mechanosensitivity, flexibility and durability remains a challenge. In nature, spiders sense extremely small variations in mechanical stress using crack-shaped slit organs near their leg joints12. Here we demonstrate that sensors based on nanoscale crack junctions and inspired by the geometry of a spider’s slit organ can attain ultrahigh sensitivity and serve multiple purposes. The sensors are sensitive to strain (with a gauge factor of over 2,000 in the 0–2 per cent strain range) and vibration (with the ability to detect amplitudes of approximately 10 nanometres). The device is reversible, reproducible, durable and mechanically flexible, and can thus be easily mounted on human skin as an electronic multipixel array. The ultrahigh mechanosensitivity is attributed to the disconnection–reconnection process undergone by the zip-like nanoscale crack junctions under strain or vibration. The proposed theoretical model is consistent with experimental data that we report here. We also demonstrate that sensors based on nanoscale crack junctions are applicable to highly selective speech pattern recognition and the detection of physiological signals. The nanoscale crack junction-based Sensory System could be useful in diverse applications requiring ultrahigh displacement sensitivity.
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Ultrasensitive mechanical crack-based sensor inspired by the spider Sensory System
Nature, 2014Co-Authors: Daeshik Kang, Linfeng Piao, Byeonghak Park, Sung Soo Shin, Kahp Yang Suh, Yong Whan Choi, Chanseok Lee, Peter V Pikhitsa, Tae Il Kim, Mansoo ChoiAbstract:Recently developed flexible mechanosensors based on inorganic silicon, organic semiconductors, carbon nanotubes, graphene platelets, pressure-sensitive rubber and self-powered devices are highly sensitive and can be applied to human skin. However, the development of a multifunctional sensor satisfying the requirements of ultrahigh mechanosensitivity, flexibility and durability remains a challenge. In nature, spiders sense extremely small variations in mechanical stress using crack-shaped slit organs near their leg joints. Here we demonstrate that sensors based on nanoscale crack junctions and inspired by the geometry of a spider's slit organ can attain ultrahigh sensitivity and serve multiple purposes. The sensors are sensitive to strain (with a gauge factor of over 2,000 in the 0-2 per cent strain range) and vibration (with the ability to detect amplitudes of approximately 10 nanometres). The device is reversible, reproducible, durable and mechanically flexible, and can thus be easily mounted on human skin as an electronic multipixel array. The ultrahigh mechanosensitivity is attributed to the disconnection-reconnection process undergone by the zip-like nanoscale crack junctions under strain or vibration. The proposed theoretical model is consistent with experimental data that we report here. We also demonstrate that sensors based on nanoscale crack junctions are applicable to highly selective speech pattern recognition and the detection of physiological signals. The nanoscale crack junction-based Sensory System could be useful in diverse applications requiring ultrahigh displacement sensitivity.
Byeonghak Park - One of the best experts on this subject based on the ideXlab platform.
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ultrasensitive mechanical crack based sensor inspired by the spider Sensory System
Nature, 2014Co-Authors: Daeshik Kang, Linfeng Piao, Byeonghak Park, Sung Soo Shin, Yong Whan Choi, Peter V Pikhitsa, Mansoo ChoiAbstract:A mechanical crack-based sensor inspired by the mechanism spiders use to sense minute variations in stress offers ultrahigh sensitivity to pressure and vibration and can easily be mounted on human skin for the purposes of speech recognition and the monitoring of physiological signals. Usually when spiders are mentioned in a biomimetic context the remarkable tensile strength of spider silk is discussed. But in this study, Mansoo Choi and colleagues take inspiration from the slit Sensory organs that a spider uses to detect vibrations in its web. The authors have developed a nanoscale mechanical crack-based sensor consisting of a thin platinum layer, in which tiny cracks are produced in a controlled way, on a flexible polymer sheet. Vibrations and changes in pressure are measured as changes in conductivity in the platinum sheet as the cracks open and close. The potential of the device is demonstrated with a variety of examples such as with a pixelated sensor that can detect a flapping ladybird and a flexible sensor that can measure and replay music. It can easily be mounted on human skin for purposes such as speech recognition and the monitoring of physiological signals. Recently developed flexible mechanosensors based on inorganic silicon1,2,3, organic semiconductors4,5,6, carbon nanotubes7, graphene platelets8, pressure-sensitive rubber9 and self-powered devices10,11 are highly sensitive and can be applied to human skin. However, the development of a multifunctional sensor satisfying the requirements of ultrahigh mechanosensitivity, flexibility and durability remains a challenge. In nature, spiders sense extremely small variations in mechanical stress using crack-shaped slit organs near their leg joints12. Here we demonstrate that sensors based on nanoscale crack junctions and inspired by the geometry of a spider’s slit organ can attain ultrahigh sensitivity and serve multiple purposes. The sensors are sensitive to strain (with a gauge factor of over 2,000 in the 0–2 per cent strain range) and vibration (with the ability to detect amplitudes of approximately 10 nanometres). The device is reversible, reproducible, durable and mechanically flexible, and can thus be easily mounted on human skin as an electronic multipixel array. The ultrahigh mechanosensitivity is attributed to the disconnection–reconnection process undergone by the zip-like nanoscale crack junctions under strain or vibration. The proposed theoretical model is consistent with experimental data that we report here. We also demonstrate that sensors based on nanoscale crack junctions are applicable to highly selective speech pattern recognition and the detection of physiological signals. The nanoscale crack junction-based Sensory System could be useful in diverse applications requiring ultrahigh displacement sensitivity.
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Ultrasensitive mechanical crack-based sensor inspired by the spider Sensory System
Nature, 2014Co-Authors: Daeshik Kang, Linfeng Piao, Byeonghak Park, Sung Soo Shin, Kahp Yang Suh, Yong Whan Choi, Chanseok Lee, Peter V Pikhitsa, Tae Il Kim, Mansoo ChoiAbstract:Recently developed flexible mechanosensors based on inorganic silicon, organic semiconductors, carbon nanotubes, graphene platelets, pressure-sensitive rubber and self-powered devices are highly sensitive and can be applied to human skin. However, the development of a multifunctional sensor satisfying the requirements of ultrahigh mechanosensitivity, flexibility and durability remains a challenge. In nature, spiders sense extremely small variations in mechanical stress using crack-shaped slit organs near their leg joints. Here we demonstrate that sensors based on nanoscale crack junctions and inspired by the geometry of a spider's slit organ can attain ultrahigh sensitivity and serve multiple purposes. The sensors are sensitive to strain (with a gauge factor of over 2,000 in the 0-2 per cent strain range) and vibration (with the ability to detect amplitudes of approximately 10 nanometres). The device is reversible, reproducible, durable and mechanically flexible, and can thus be easily mounted on human skin as an electronic multipixel array. The ultrahigh mechanosensitivity is attributed to the disconnection-reconnection process undergone by the zip-like nanoscale crack junctions under strain or vibration. The proposed theoretical model is consistent with experimental data that we report here. We also demonstrate that sensors based on nanoscale crack junctions are applicable to highly selective speech pattern recognition and the detection of physiological signals. The nanoscale crack junction-based Sensory System could be useful in diverse applications requiring ultrahigh displacement sensitivity.
