Samsung came up with an artificial muscle it pushes
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Samsung came up with an artificial muscle – it pushes the weight 800 times harder than its own

Samsung Electronics in collaboration with Ajou University occurred multifunctional artificial muscle drive of a new generation. The extremely light and compact “muscle” is able to lift 800 times its own weight. At the same time, the muscle itself is a sensor, making it easy to integrate into digital control systems ranging from wearable devices to robotics.

    Image source: Nature Communications

Image source: Nature Communications

Structurally, the Compliant Reinforced SMA Actuator (CASA) is an arcuate composite metal spring with shape memory metal wire (SMA). Under the influence of the applied voltage, the wire is compressed and sets the spring in motion. This force is transferred to the workload. For example, a 0.22g drive can lift a load of 176g, which is 800 times the weight of the drive itself. By making the muscles bigger and more powerful, the drive will be able to lift tens and hundreds of kilograms of cargo, which will find applications in exoskeletons and robotics.

    Image source: Nature Communications

Image source: Nature Communications

Samsung emphasizes that the company’s goal was to develop a muscle actuator with the highest actuator force-to-mass ratio. A major bonus was that the wire – an artificial muscle – itself became the most accurate sensor of compression and tension. The electrical resistance of the wire (muscle) indicates the force of compression or tension and is a simple way of muscle control and a solution for tactile feedback to the operator.

    Image source: Nature Communications

Image source: Nature Communications

Samsung developers have found two practical uses for their development. First, an artificial muscle drive is used to focus augmented reality glasses. Second, propulsion in gloves is used to create tactile sensations in virtual or augmented reality. In the case of glasses, the drive adjusts the distance between the display and the optics and, depending on the level of attention, ensures that the eye is naturally focused on near or far objects; in the case of gloves, it creates the effect of a pressure on the skin. The new sensors are so small and so powerful that the gripping effect is almost real.

We add that an article dedicated to the work was published in the most prestigious scientific journal nature communication and freely available on shortcut.

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Johnson Smith

Johnson Smith is interested in Home Theater & Audio, Smart Tech, Google News & Products, How To, Apple News & Products, Cell Phones, Automotive Technology.

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