New electronic skin could sense of heat and pressure changes at the same time
[abstract] at present, ulsan national institute of science and technology to develop a latest electronic skin, can "perception" heat and temperature changes at the same time, it even can detect the pressure caused by the human hair.
Ulsan national institute of science and technology of the latest developing a super
sensitive skin, can simultaneously detect heat and temperature changes.
According tomedia reports, at present, scientists newly developed an "electronic skin", can be in a unique way of perception of heat and pressure at the same time.
In testing electronic skin grooves can perceive through droplets of water, and can detect head pressure distribution on the surface.This innovative technology can be used to make a more realistic prosthesis, and improve the accuracy of the wearable sensors and medical diagnostic equipment.
The latest electronic skin is made from ulsan national institute of science and technology Park, a professor at Jonghwa lead
colleagues.Human skin contains unique microstructure and epidermis, dermis sensor receptors.Miniature ridged bumps on the tip of the finger to design fine tuning surface texture perception, and pass the sensor information to the brain.
Existing electronic technology makes the robot skin and mechanical prosthesis can grab and manipulating objects, identification of surface texture and hardness, feel the temperature of the object.However before this electronic skin can also is very sensitive to detect heat and different types of pressure is difficult to achieve.
Currently, Jonghwa professor Park and his colleagues simulated fingerprints groove structure design of the ferroelectric thin film, microscopic magnify human fingertip "mountain ridge" structure of the skin.By adding a polymer composite material made of graphene and reduce oxidation, the film can use sensing electronic charge to detect touch and temperature change.
The researchers tested electronic skin by water droplets to feel change response, and found that the electronic skin could detect the water droplets fall under different pressure and temperature.At the same time, they found that the artificial finger skin can detect tiny pressure produced by the human hair.
When electronic skin adhere to the human body's wrist, Jonghwa professor Park and his colleagues said that when the wrist blood vessels expand and contract, electronic skin by detecting the change of skin temperature, can be used to monitor the pulse pressure.In September this year, researchers from the Stanford university to develop a sensitive touch artificial skin, not only can detect pressure, also can transmit signal to the nerve cells.
They hope the proof-of-concept experiments can bring revolutionary change to artificial limbs, allowing the wearer to perceive different surface texture, distinguish between hot and cold temperature.The two
layers of "skin" at the top with elasticity, can be induced stress, the
underlying skin can produce biological Chemical signal suitable for
transmission to the nerve cells.