home
The advent of super-stretch transparent film sensor
The key component of the new sensor is a transparent film-like carbon "nano spring", which requires the preparation of the carbon nanotube suspension was sprayed on a thin layer of silicon, and can be stretched,
Imagine skin so flexible, you can stretch it, more than twice the normal length in any direction can be repeatedly stretched, it always restitution, no wrinkles, you let go of it OK. You certainly never need Botox (Botox).
"This sensor can measure the pressure range is from your thumb and index finger pinch force to the pressure generated by an elephant standing on one foot twice."
Darren • Lee Park meters (Darren Lipomi) said that he is a package Zhenan postdoctoral researcher in the laboratory, but also the research team. "They do not cause any permanent deformation," he said. Lee Park m is an author of the paper, the paper describes the sensor published online Oct. 23 in "Nature • Nanotechnology" on.
This sensor can be used to prepare the touch-sensitive artificial limbs or robots, for a variety of medical applications, such as pressure-sensitive bandages, or computer touch screen. The key component of the new sensor is a transparent film-like carbon "nano spring", which requires the preparation of carbon nanotube coating, a suspension is sprayed on the thin layer of silicon, and can be elongated. Stencilled to silicon nanotubes, often in the form attached to the random orientation of small clumps. When the silicon stretched, some of the "nano beam" will be pulled into the alignment direction of stretching. Silicon is released, it will spring back to the original size, but the carbon nanotubes will be bent, the formation of tiny nanostructures, looks like a spring. "We did this pre-stretched, like a spring-like properties of carbon nanotubes can be stretched again and again, without any permanent change in shape," Package Zhe Nan said. Stretched again silicon coated with carbon nanotubes, the direction perpendicular to the first direction, which causes the alignment of the carbon nanotube bundles some other direction this time. This allows the sensor can stretch in all directions, and then bounced back completely. In addition, the initial tensile yield "nano spring", after repeated stretching the length of the lower initial stretch, it will not significantly change the electrical conductivity, the package Zhe Nan said. Maintain the same conductivity, and the stretching the unstretched aspect is important because the sensor to detect and measure the pressure acting on them is through the spring-like nanostructures, they can be used as an electrode. This sensor contains two nanotubes coated with silicon, this orientation is that the coating face to face, with a layer of silicon is more deformable between them. The middle layer of silicon storage charge, just like a battery. Pressure is applied to the sensor, the intermediate layer of silicon will shrink, thereby changing the amount of electric charge it can store. This change will be detected by two film of carbon nanotubes, the nanotubes two typical car or flashlight batteries as a positive electrode and a negative electrode. This change was felt nanotube films, which makes the sensors can transmit its "feel" anything. Whether the sensor is compressed or extended, the two nanofilms are squeezed together, as if this will happen is difficult to detect which type of deformation. Parking meters but the benefit of that, it should be able to detect a pressure different modes. Compression, you look forward to a bull's-eye pattern, maximum deformation at the center, and gradually reduce the deformation is further away from the center because.
"If the device is stretching pliers two opposite, then the maximum deformation will be along the line between the two pliers,"Lee said parking meter.
Away from this line, deformation will be reduced. Package Zhenan research group previously created a sensor is very sensitive to pressure, the pressure can be detected "far below 20 mg blowfly body resulting" pressure, the researchers experiment using this flies. This latest sensor is not so sensitive, she said, but that is because the researchers focused on making it stretchable and transparent. "We did not spend a lot of time to optimize the sensitivity of this sensor," Package Zhe Nan said.
"However, the previous concept used here, we only need to improve the look of the electrode surface, we can have the same sensitivity."
The key component of the new sensor is a transparent film-like carbon "nano spring", which requires the preparation of the carbon nanotube suspension was sprayed on a thin layer of silicon, and can be stretched.
Imagine skin so flexible, you can stretch it, more than twice the normal length in any direction can be repeatedly stretched, it always restitution, no wrinkles, you let go of it OK. You certainly never need Botox (Botox).
This enviable elasticity is one of several new features have been made, belongs to a new transparent skin-like pressure sensor, which is the latest sensor, the developer at Stanford University (Stanford University), Associate Professor of Chemical Engineering package Zhenan (Zhenan Bao), her quest is to create an artificial "super skin." This sensor using single-walled carbon nanotubes (single-walled carbon nanotubes) a transparent film, which acts like a miniature spring nanotubes, the sensor can accurately measure the pressure above it, as can be pulled imaging syrup can also be squeezed pressure imaging sponge.
"This sensor can measure the pressure range is from your thumb and index finger pinch force to the pressure generated by an elephant standing on one foot twice."
Darren • Lee Park meters (Darren Lipomi) said that he is a package Zhenan postdoctoral researcher in the laboratory, but also the research team. "They do not cause any permanent deformation," he said. Lee Park m is an author of the paper, the paper describes the sensor published online Oct. 23 in "Nature • Nanotechnology" on.
This sensor can be used to prepare the touch-sensitive artificial limbs or robots, for a variety of medical applications, such as pressure-sensitive bandages, or computer touch screen. The key component of the new sensor is a transparent film-like carbon "nano spring", which requires the preparation of carbon nanotube coating, a suspension is sprayed on the thin layer of silicon, and can be elongated. Stencilled to silicon nanotubes, often in the form attached to the random orientation of small clumps. When the silicon stretched, some of the "nano beam" will be pulled into the alignment direction of stretching. Silicon is released, it will spring back to the original size, but the carbon nanotubes will be bent, the formation of tiny nanostructures, looks like a spring. "We did this pre-stretched, like a spring-like properties of carbon nanotubes can be stretched again and again, without any permanent change in shape," Package Zhe Nan said. Stretched again silicon coated with carbon nanotubes, the direction perpendicular to the first direction, which causes the alignment of the carbon nanotube bundles some other direction this time. This allows the sensor can stretch in all directions, and then bounced back completely. In addition, the initial tensile yield "nano spring", after repeated stretching the length of the lower initial stretch, it will not significantly change the electrical conductivity, the package Zhe Nan said. Maintain the same conductivity, and the stretching the unstretched aspect is important because the sensor to detect and measure the pressure acting on them is through the spring-like nanostructures, they can be used as an electrode. This sensor contains two nanotubes coated with silicon, this orientation is that the coating face to face, with a layer of silicon is more deformable between them. The middle layer of silicon storage charge, just like a battery. Pressure is applied to the sensor, the intermediate layer of silicon will shrink, thereby changing the amount of electric charge it can store. This change will be detected by two film of carbon nanotubes, the nanotubes two typical car or flashlight batteries as a positive electrode and a negative electrode. This change was felt nanotube films, which makes the sensors can transmit its "feel" anything. Whether the sensor is compressed or extended, the two nanofilms are squeezed together, as if this will happen is difficult to detect which type of deformation. Parking meters but the benefit of that, it should be able to detect a pressure different modes. Compression, you look forward to a bull's-eye pattern, maximum deformation at the center, and gradually reduce the deformation is further away from the center because.
"If the device is stretching pliers two opposite, then the maximum deformation will be along the line between the two pliers,"Lee said parking meter.
Away from this line, deformation will be reduced. Package Zhenan research group previously created a sensor is very sensitive to pressure, the pressure can be detected "far below 20 mg blowfly body resulting" pressure, the researchers experiment using this flies. This latest sensor is not so sensitive, she said, but that is because the researchers focused on making it stretchable and transparent. "We did not spend a lot of time to optimize the sensitivity of this sensor," Package Zhe Nan said.
"However, the previous concept used here, we only need to improve the look of the electrode surface, we can have the same sensitivity."
AS&GG.jpg)
Home
Post a Comment