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【Hot attention of Chemical Machinery Equipment Network】Sensors are a kind of high technology that began to emerge in the middle of the last century.
With the rapid development of the information industry, sensors have gradually emerged in all walks of life.
Up to now, sensors have been integrated into our production and life, from smart phones to smart homes, from robots to unmanned driving, and even medical treatment.
Hot attention of Chemical Machinery Equipment NetworkChemical machinery and equipmentsensorWith the rapid development of the information industry, sensors have gradually emerged in all walks of life.
Up to now, sensors have been integrated into our production and life, from smart phones to smart homes, from robots to unmanned driving, and even medical treatment.
Sensors are again referred to as electrical features, but with the continuous expansion of sensor applications, there are more and more types of sensors, and the technology is constantly innovating.
It is now 2021.
Looking back over the past year, scientists have made a lot of achievements in the field of sensors.
The following editor will take stock of some of them for readers.
It is now 2021.
Looking back over the past year, scientists have made a lot of achievements in the field of sensors.
The following editor will take stock of some of them for readers.
Successfully developed a new type of hydrogen sensor driven by light
Successfully developed a new type of hydrogen sensor driven by lightHydrogen is an ideal free radical, especially a good scavenger of toxic free radicals, and has potential clinical application prospects.
However, hydrogen faces two difficulties in safe storage and transportation.
Therefore, in the field of biomedicine, it is necessary to strictly control the hydrogen content and prevent its leakage.
To solve this problem, researchers at RMIT University in Melbourne, Australia imitated the uneven microstructure on the surface of butterfly wings and developed a light-activated hydrogen sensor.
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However, hydrogen faces two difficulties in safe storage and transportation.
Therefore, in the field of biomedicine, it is necessary to strictly control the hydrogen content and prevent its leakage.
To solve this problem, researchers at RMIT University in Melbourne, Australia imitated the uneven microstructure on the surface of butterfly wings and developed a light-activated hydrogen sensor.
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It is reported that the instrument uses light as power instead of thermal power, and the instrument surpasses the previous hydrogen sensor.
It can not only work at temperatures of 150°C and higher, but also output accurate results when testing at room temperature and in the full range.
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The sensor can detect the hydrogen concentration of one-tenths of a million for medical diagnosis, as well as the four-parts-per-million concentration of potentially explosive gas levels.
It can not only work at temperatures of 150°C and higher, but also output accurate results when testing at room temperature and in the full range.
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The sensor can detect the hydrogen concentration of one-tenths of a million for medical diagnosis, as well as the four-parts-per-million concentration of potentially explosive gas levels.
New method for antibiotic detection, sensors play a role
New method for antibiotic detection, sensors play a role The implementation of the "anti-resistance" policy requires the assistance of testing methods.
In order to ensure the safety of human food, we need to use a large number of instruments and equipment.
At present, it is of great practical significance to develop a fast, simple and real-time visualization method for antibiotic detection.
In order to ensure the safety of human food, we need to use a large number of instruments and equipment.
At present, it is of great practical significance to develop a fast, simple and real-time visualization method for antibiotic detection.
The research team of Jiang Changlong, Institute of Solid State, Hefei Research Institute of Chinese Academy of Sciences, realized the visual and quantitative detection of tetracycline based on the dual emission fluorescent quantum dot ratio sensor.
At present, the sensor has been successfully applied in the rapid on-site detection of tap water samples and milk samples.
Moreover, this method shows the wide applicability of the fluorescence detection method in simple, fast, intuitive, and real-time food safety and environmental protection, and provides a direction for the development of more food safety detection methods and environmental pollution detection methods.
At present, the sensor has been successfully applied in the rapid on-site detection of tap water samples and milk samples.
Moreover, this method shows the wide applicability of the fluorescence detection method in simple, fast, intuitive, and real-time food safety and environmental protection, and provides a direction for the development of more food safety detection methods and environmental pollution detection methods.
The miniature anti-collision sensor can react within two seconds
The miniature anti-collision sensor can react within two seconds Researchers have discovered an electronic version of a special neuron unique to locusts, which allows locusts to respond quickly without consuming too much energy.
Taking this as inspiration, the researchers developed a nano-sized collision sensor using a photodetector made of a single layer of molybdenum sulfide.
This new sensor may help the development of future collision avoidance technologies for drones, robots and autonomous vehicles.
Taking this as inspiration, the researchers developed a nano-sized collision sensor using a photodetector made of a single layer of molybdenum sulfide.
This new sensor may help the development of future collision avoidance technologies for drones, robots and autonomous vehicles.
A new type of surface acoustic wave temperature sensor designed by the Institute of Acoustics
A new type of surface acoustic wave temperature sensor designed by the Institute of Acoustics The heat radiation loss caused by the high temperature environment will cause the sensor device to have a large acoustic attenuation.
Therefore, the sensor working in this environment should have a large enough quality factor and low loss, while the wireless passive temperature sensor based on surface acoustic wave To this end, a good solution is provided.
Therefore, the sensor working in this environment should have a large enough quality factor and low loss, while the wireless passive temperature sensor based on surface acoustic wave To this end, a good solution is provided.
*Doctoral student Li Xueling of the Ultrasonic Technology Center of the Institute of Acoustics and his supervisor Wang Wen, etc.
, used the short pulse method to extract the accurate reflection coefficient, and used a typical coupling model to optimize the design, simulation and simulation of the LGS/Pt structured surface acoustic wave temperature sensor.
Tests prove that the device has good high temperature sensing performance.
, used the short pulse method to extract the accurate reflection coefficient, and used a typical coupling model to optimize the design, simulation and simulation of the LGS/Pt structured surface acoustic wave temperature sensor.
Tests prove that the device has good high temperature sensing performance.
Studies have shown that surface acoustic wave high temperature sensing technology can be used for high-sensitivity temperature monitoring and early warning in high-temperature environments.
Microelectronics has made progress in the research direction of SERS droplet biochemical sensors
Microelectronics has made progress in the research direction of SERS droplet biochemical sensors On September 29, 2020, *The Institute of Microelectronics issued a news that the research group of Researcher Chen Dapeng of the Integrated Circuit Leading Process Research and Development Center of the Institute of Microelectronics and the research group of Professor Xiong Jijun of North University of China collaborated in the research field of surface enhanced Raman (SERS) biochemical detection Progress has been made in stages.
Researcher Chen Dapeng's research group proposed an open SERS droplet sensor.
The sensor utilizes the porous fragility of the candle ash nano-chain structure to form SERS active droplets with rich three-dimensional "hot spots" on the substrate in a rolling manner, thereby greatly enhancing the Raman detection performance of the droplets.
The liquid phase environment provided by the droplets can maintain the activity of biomolecules and improve the effective combination of biomacromolecules (such as proteins and DNA) with "hot spots", effectively solving the complex preparation process problems required by traditional substrate-based SERS devices .
The sensor utilizes the porous fragility of the candle ash nano-chain structure to form SERS active droplets with rich three-dimensional "hot spots" on the substrate in a rolling manner, thereby greatly enhancing the Raman detection performance of the droplets.
The liquid phase environment provided by the droplets can maintain the activity of biomolecules and improve the effective combination of biomacromolecules (such as proteins and DNA) with "hot spots", effectively solving the complex preparation process problems required by traditional substrate-based SERS devices .
Chinese scholars have made progress in the research of distributed optical fiber sensing
Chinese scholars have made progress in the research of distributed optical fiber sensing Professor Hong Xiaobin of Beijing University of Posts and Telecommunications and other cooperative teams have made progress in the research of distributed optical fiber sensing.
The research results of this project will promote the industrialization process of distributed optical fiber sensing system, which can serve the fields of disaster prevention, municipal pipeline monitoring and oil and gas pipeline monitoring.
The research results of this project will promote the industrialization process of distributed optical fiber sensing system, which can serve the fields of disaster prevention, municipal pipeline monitoring and oil and gas pipeline monitoring.
The team proposed a new encoding/decoding method, which uses a set of binary random numbers to modulate the optical signal into a light pulse sequence, inject it into the optical fiber and detect the reflected light signal, and convert the inverse vector of this set of binary random numbers As a decoding vector.
In this way, it is only necessary to inject a set of random numbers to obtain a single pulse system response, and to achieve rapid measurement while improving the performance of the distributed optical fiber sensing system.
Using this method, the real-time temperature detection of 10 kilometers of fiber length is realized on the Raman optical time domain reflectometer (ROTDR) based on Raman scattering, and the Brillouin time domain analysis (BOTDA) system of 100 kilometers of fiber length The above uses 723-bit encoding, and the signal-to-noise ratio of the decoded signal is 8.
5 times that of the traditional single pulse method.
In this way, it is only necessary to inject a set of random numbers to obtain a single pulse system response, and to achieve rapid measurement while improving the performance of the distributed optical fiber sensing system.
Using this method, the real-time temperature detection of 10 kilometers of fiber length is realized on the Raman optical time domain reflectometer (ROTDR) based on Raman scattering, and the Brillouin time domain analysis (BOTDA) system of 100 kilometers of fiber length The above uses 723-bit encoding, and the signal-to-noise ratio of the decoded signal is 8.
5 times that of the traditional single pulse method.
The above are just some of the achievements in sensor research and development.
What new sensor technologies and equipment will scientists bring to all walks of life in the new year? Stay tuned!
What new sensor technologies and equipment will scientists bring to all walks of life in the new year? Stay tuned!
Original title: 2020 year-end inventory: new technologies and equipment in the sensor field
