South Korea's development of biomimetic nano-gap sensors has breakthrough significance [Full Text]

Technology is a dynamic spider physical activity extremely flexible arthropods, when you try to roll up a magazine brushed this "horrible monster" on the table, the first time the spider will be able to discern your move, and fled early . There is a magical "sensory organ" on the spider's eight-legged joints, which is directly linked to the internal nervous system. The movement of objects in the external environment (even if it is human and its slight minor movements) can trigger the "sixth sense alarm" in the spider body through vibration.


Using the principle of sound vibration, Korean scientists have developed a nano-gap sensor derived from the "real spider" bionics. The recent "Nature" magazine published this breakthrough bionics research report and believes that it will bring a gospel to future human problems.

The uniqueness of the entire system is that the gap between sensors has reached the nanometer level, which guarantees a high sensitivity of the sensor. Specifically, the researchers added a 20-nm-thick platinum layer to the surface of the viscoelastic polymer to build a sensor frame. By extending the surface of the platinum variants, gaps between the upper and lower layers created the underlying polymer, and the researchers then measured the conductance of the sensor surface.

In practical experiments, especially for audio tests, nanofissure sensors perform better than traditional microphones. In the experimental environment where the interference noise is as high as 92 dB, the sensor can accurately capture the basic words “go”, “jump”, “shoot” and “stop” spoken by the tester, but ordinary microphones cannot even record the sound clearly. .

Researchers conducted more in-depth tests. When the sensor is placed on the surface of the violin, it can accurately record each note in the music piece and “translate” it to an external device and output it as an electronic music piece. What's even more interesting is wearing the sensor on the wrist, which also accurately measures the heartbeat of the human body.

Prof. Peter Fratzl of the German Planck Institute published a paper on electromechanical transducer systems in the journal Nature in 2009. Daeshik Kang, the leader of the Korean team, was inspired by the paper and launched a research project on nanosensors.

Prof. Fratzl said that if this research result is somewhat obscure, it can be explained by an example of the “tile effect” of the image: the nanosensors are compared to neatly arranged and adhered to the underlying rubber tile. When the area of ​​the base rubber is stretched to 101% by external force, the area of ​​the tile will not change, but the gap between the tiles will inevitably become larger. The most critical point is that each tile covers the bottom rubber and the expanded area is greater than 1%. The tiles in the example correspond to nanosensors. The movement of the bones is equivalent to the operation of stretching the rubber.

Prof. Mansoo Choi of Aerospace Engineering at Seoul National University who participated in the study said that “The opening and closing of gaps will be amplified during measurement, so this nano-fissure sensor has extremely high sensitivity in detecting resistivity. ”

In the follow-up study, the team hopes to find a more suitable material to replace the expensive platinum in the current version of nano-fissure transducers to make this technology universally popular. Prof Choi said, “The focus of future research will be on improving the durability and durability of the system. We hope that within 3-5 years, the product can be put into commercial production.”

Using the air vibrations caused by sound, the concept of recognizing movement is really clever. In addition to being able to effectively eliminate outside noise, nanosensors also need to be able to accurately recognize sound in specific frequency bands. For example, in the health care mentioned above, measuring blood pressure, pulse, and other functions requires the sensor to be particularly sensitive to a human signal, rather than simply recording sound and vibration. So Xiao Bian thinks that the function is not more, but rather fine. However, I am still very much looking forward to seeing a "Spider-Sixth Sense" sensor in the future.

SHINE Recess Magnets have revolutionized the precast industry. Our magnets offers long term reliability and cost effective solutions for the precast industry. Our products are durable and they last for years under all conditions. With our unique combination of rubber and integrated magnets, you can make almost any shape. Once it´s in place, it stays put. No slipping, no sliding.

The Recess Magnets are used in the precast concrete production structures to form free spaces in the work-pieces to fix the concrete inserts. Insert Magnets are used in Magnetic Shuttering System. This equipment type has considerably simplified some production task for the concrete structures producers. It easily gets fixed in the magnet formwork system or on the steel table due to its magnetic properties.

For fastening various parts and forming empty space in the process of reinforced concrete products manufacturing, we offer various types of magnetic holders, insert magnets and spacers, both standard and custom-made according to customer drawings.

Recess Magnets

Recess Magnets,Embedded Magnets,Precast Construction Magnets,Thread Rods Insert Magnet

Ningbo Shine Magnetic Technology Co., Ltd. , https://www.shutteringmagnetic.com