Started by PocketOption, Jun 05, 2023, 09:08 am
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In the realm of technological innovation, the field of haptic technology has been making remarkable strides in recreating the sense of touch. From virtual reality experiences to telerobotics and computer simulations, haptics have found their way into various applications over the past several years. However, recent breakthroughs in artificial skin technology hold the promise of taking haptics to an entirely new level. It might potentially restore the sense of touch for individuals with prosthetic limbs. This innovative technology might change the lives of people suffering from lost sensation due to scar tissue or other injuries.
The skin, being the largest organ in the human body, serves a vital role in protecting our internal organs from potential harm. Yet, it also plays a more intricate role in our daily lives. Touch sensation, which originates from a network of neurons embedded in the skin, allows us to perceive and interact with the world around us. When we touch an object, electrical signals are transmitted from the outermost points of our body to our central nervous system. That enables us to feel sensations.
However, when this connection is disrupted due to spinal injuries or the loss of a limb, people lose the sense of touch. That's why developing touch technology is so important. It promises to restore that feeling.
Researchers led by Wang et al. have recently unveiled an advanced e-skin technology that holds the potential to restore detailed sensory feedback and enable soft interaction with the environment. This remarkable e-skin closely mimics the physical characteristics of human skin. Moreover, scientists can program it to sense touch, temperature changes, and pressure. The data collected by the e-skin is then conveyed back to the brain through artificial neural networks. The latter effectively restores the fifth sense for those who have lost it.
One of the main challenges in developing e-skin has been creating flexible electronic materials that can replicate the properties of human skin. Recent advancements in soft device fabrication have made it possible to construct e-skin with greater flexibility. However, even the best flexible electronic materials still pose a risk due to their high voltage requirements. To address this issue, Wang et al. have developed a trilayer insulator. The company can seamlessly integrate the latter into the e-skin, ensuring it remains wearable and flexible without compromising safety.
Reconstructing the Brain’s Interpretation of Touch
Another significant hurdle in developing artificial skin lies in replicating the brain’s interpretation of sensory input and its corresponding reaction. When we touch something hot, our brain immediately recognizes the danger and triggers an unconscious withdrawal response. This rapid sensory feedback relies on the neural network connecting our skin to our brain. Reproducing this mechanism in artificial skin requires the construction of a network of solid-state synaptic transistors. It’s necessary to carry and encode the electrical signals generated upon contact.
To demonstrate the efficacy of their e-skin technology, Wang et al. conducted experiments using live rat models. By connecting the e-skin to the somatosensory cortex, which is responsible for processing tactile information, they were able to observe significant activation in the cortex when pressure was applied to the e-skin. This activation, in turn, led to substantial muscle responses in the rat. The latter indicates the potential for restoring touch sensation.
While widespread commercialization of this technology is still years away, the implications are vast. Apart from providing a means to restore touch sensation for amputees and individuals with touch-related conditions, e-skin could find applications in industries such as human-operated machinery and robotics. The data feedback provided by e-skin could improve operator performance, as well as enhance the capabilities of robots.
The recent advances in artificial skin technology represent a significant milestone in the quest to restore the sense of touch. Through innovative technology supplies and a deep understanding of technological factors, researchers have made remarkable progress in developing e-skin that closely mimics human skin and provides sensory feedback.
While there are still significant milestones to achieve in terms of safety and efficacy through animal and human testing, the future holds great promise for this remarkable project, as well as other types of technology aimed at improving our lives.
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