Scientists have developed a self-healing hydrogel that can be used to create highly flexible sensors. The hydrogel, which was created by researchers from the University of Tokyo, is composed of two types of polymers that are capable of self-healing. This means that when the hydrogel is damaged, it can repair itself without the need for external intervention. The hydrogel can be used to create sensors that are highly sensitive to pressure, temperature, and humidity, making it ideal for use in a range of applications, from medical devices to robotics. The hydrogel is also capable of withstanding extreme environments, meaning it is perfect for use in harsh environments.

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source: Phys.org