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Researchers Create Artificial Skin With Sense of Touch
Scientists have recently made considerable gains in creating human-like artificial limbs, but they still look and feel artificial. That could change with a development from South Korea. Researchers say they have come up with a synthetic skin that not only feels warm but also has the sense of touch and moisture.
Artificial robotic hands are getting increasingly better at emulating human hands and the most advanced can even be controlled by thoughts.
But people who wear bionic hands must rely on their sight to know what they are touching or grasping.
Now, though, researchers in South Korea and the U.S. say they have created a stretchable artificial skin that can register heat, pressure and moisture.
This polymer-based elastic material is not designed to replace damaged human skin, such as in burn victims, but rather to provide high-resolution sensory capabilities for prosthetic limbs or for the limbs of humanoid robots.
Team leader Kim Dae-Hyeong, a professor at the Seoul National University School of Chemical and Biological Engineering, says its sensors are an exact copy of human skin.
“The skin can feel pressure, temperature, strain, humidity," said Kim. "Also it is soft, just like human skin, and embedded with heating elements that can make itself warm.”
Kim says the artificial skin is made of a combination of rubber, polyamide and silicon with sensor density of up to 400 per square millimeter.
An artificial hand wrapped in the new skin could distinguish between dry and moist objects and measure the pressure of the grasp.
But Kim says what it still can not do is send those signals to a human brain. That, he says, is the scientists’ ultimate goal.
“I hope a robotic limb with this synthetic skin can be used by disabled people. For industrial uses, it can be applied to various types of robots, like a humanoid robot," said Kim.
Scientists say with this sensitive skin, robots may someday be able to type on keyboards and even change a baby’s wet diaper.
词汇解析
entertain
难度：3星常用词汇，属常用6000词
英汉解释
v.娱乐；使有兴趣；招待；考虑；抱有；容纳
参考例句
用作动词 (v.)
We were all entertained by his humorous stories.
他的幽默故事使我们大家都很开心。
The human soul is hospitable, and will entertain conflicting sentiments and contradictory opinions with much impartiality.
人类的灵魂是能够容纳一切的，它毫不偏袒地接受互相对立的感情和互相矛盾的意见。
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delicate
难度：3星常用词汇，属常用6000词
英汉解释
adj.微妙的；精美的；纤细的；脆弱的；敏锐的；美味的
参考例句
用作形容词 (adj.)
The scientist needs some delicate instruments.
这位科学家需要一些精密的仪器。
They are the most delicate morsels.
这些确是最好吃的部分。
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react
难度：3星常用词汇，属常用6000词
英汉解释
v.反应；反攻
参考例句
用作动词 (v.)
The British would never react militarily to the invasion of the islands.
英国根本不会在他们侵占福岛后在军事上进行反攻。
The Glade Riders and Warhawk Riders are swift and skilful beastmasters, striking with speed before the foe can react.
森林骑兵和战鹰骑士都能灵巧地驾驭他们的坐骑，从而能迅速地攻击敌人，致使其不能反攻。
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deputy
难度：2星扩展词汇，属常用10000词
英汉解释
n.代表；副手；议员
参考例句
用作名词 (n.)
My younger brother is my deputy during my absence.
我不在时，我弟弟代表我。
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liberal
难度：4星核心词汇，属常用3000词
英汉解释
adj.慷慨的；大方的；开明的；自由主义的
n.自由主义者；开明的人
参考例句
用作形容词 (adj.)
They are liberal in their help.
他们慷慨相助。
用作名词 (n.)
He is an open-minded liberal.
他是一个开明的自由主义者。
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crisis
难度：4星核心词汇，属常用3000词
英汉解释
n.危机；危急关头
参考例句
用作名词 (n.)
They suffered huge losses in the financial crisis.
他们在经济危机时遭受了巨大的损失。
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reader
难度：4星核心词汇，属常用3000词
英汉解释
n.读者；读物；读本
参考例句
用作名词 (n.)
He writes with the reader in mind.
他写作时把读者放在心上。
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credit
难度：3星常用词汇，属常用6000词
英汉解释
n.信用；荣誉；学分；赞扬；贷款；赊欠；贷方；存款
(复)credits: 演职员名单.
v.归功于；相信；记入贷方
参考例句
用作名词 (n.)
Credit counseling helped us get out from under.
信用咨询使我们免除了忧虑
用作动词 (v.)
At the time, we used to credit everything to one person.
那时大家把什么都归功于一个人。
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