All parameters are predictable when racing in a video game. You know how your vehicle will react in a crash or how fast it will slide off a curve.with driverless car, but the complexity goes through the roof. From unexpected pedestrian and other vehicle movements to weather conditions that drastically change the driving experience, this is the real world, and it’s all about chaos and unpredictability.It is therefore the weakest link of current digital transformation and is 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 Institute for Organic Electronics at Linköping University (Sweden) managed to innovative sensorThis could potentially offer a multitude of 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 materials are highly conductive and thermoelastic aerogels of polymers.to achieve this new materialThey mixed cellulose nanofibers and a conductive polymer (PEDOT:PSS) in water and freeze-dried the resulting material under vacuum. Finally, polysilane is added to the spongy material to give it elasticity.
Thermoelectric devices generate 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, the temperature also changes. In this case there is a linear response to increasing voltage and the resistance to current increases with temperature. However, when the material is under pressure, 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. Similarly, moisture also affects the rate at which ions pass through a material. The lower the temperature, the slower the ions move. In a nutshell, the ability to track both electronic and ionic behavior is key to measuring He three variables with one smart sensor.
real application
This innovative airgel It offers some distinct advantages. Not only does it eliminate the need for separate sensors, it also costs less to produce than current alternative solutions. One of its most direct applications is robot system handling of fragile materials and, similarly, human prostheses. This new material can be embedded in packages with sensitive contents and can also power smart home and functional fabric technologies.
sauce: science daily
