All parameters are predictable when racing in a video game. We know how a vehicle reacts in a crash or how fast it rolls out of a corner.with driverless carHowever, the complexity is very complicated. Unexpected pedestrian and other vehicle movements, weather conditions that drastically change the driving experience… this is the real world with all its chaos and unpredictability. The weakest link in today’s digital transformation is therefore playing an increasingly important role. internet of things, are measurements of all these physical variables. The challenge in the digital age is to create advanced sensors that provide meaningful and reliable information. The most basic variables are temperature, humidity and pressure.And researchers at the Organic Electronics Laboratory at Linköping University (Sweden) have made them innovative sensor. This has the potential for numerous applications in various fields such as smart homes, robotics, and artificial skin.
To create this New technology, Swedish scientists have developed a complex process based on the behavior of electrons. The basic material is aerogels, which are highly conductive and thermoelectroelastic polymers.to achieve this new materialmixed cellulose nanofibers and a conductive polymer (PEDOT:PSS) in water and lyophilized the resulting material under vacuum. Finally, polysilane is added to the spongy material to give it elasticity.
A thermoelectric device produces a voltage when there is a temperature difference between the two sides and electrons flow from the cold side to the warm side. Conversely, when a voltage is applied to a material, its temperature also changes. In this case there is a linear response to increasing voltage and the resistance to current increases with temperature. However, when pressure is applied to the material, the resistance decreases, allowing electrons to flow more easily. All this means that changes in current can be interpreted as changes in pressure.
moreover, thermoelectric material, can also detect changes in room temperature. The greater the temperature difference between the two sides, the higher the voltage generated. Similarly, moisture also affects the speed at which ions move through the material. The lower the temperature, the slower the ions move. In a nutshell, the ability to track the behavior of both electrons and ions is key for him to measure three variables with a single smart sensor.
real world application
This innovative airgel You get some obvious advantages. Not only does it eliminate the need for a separate sensor, it also costs less to manufacture than current alternative solutions. One of its most direct applications is robot system The same is true for handling fragile materials and for human prostheses. This new material will not only power smart home and functional fabric technologies, but it can also be embedded in packages containing sensitive content.
sauce: science daily
