The research team led by Professor Hiroshima Yuji from the Faculty of Engineering at the University of Japan has made a groundbreaking breakthrough by developing the world's smallest ultra-sensitive tactile sensor. This innovative technology holds great promise for revolutionizing the medical device industry, particularly in areas such as robotic surgery and minimally invasive procedures.
The sensor incorporates a spiral-shaped carbon coil, measuring between 1 to 10 micrometers in diameter and 300 to 500 micrometers in length, acting as a spring within a synthetic resin block approximately 0.1 mm³ in size. When this micro-coil comes into contact with an object, it can detect even the slightest pressure and temperature changes, converting them into electrical signals. What makes this sensor truly unique is its ability to sense not only touch but also complex mechanical interactions like "screwing" and "friction."
According to Professor Yuandao, the new sensor is significantly more sensitive—thousands of times more than previous versions—while also being cost-effective. It can be integrated into surgical tools such as medical robots, catheters, and endoscopes, helping doctors assess the texture and condition of internal organs and tumors. This could prove especially valuable for less experienced surgeons, offering real-time feedback that enhances precision and safety during procedures.
Despite its impressive performance, the sensor still faces challenges in terms of sensing range and sensitivity control. The research team is actively working on refining these aspects and aims to commercialize the technology within the next five years. With continued development, this tiny yet powerful sensor may soon become a vital tool in modern medicine, bridging the gap between human skill and machine precision.
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