Sound waves passing through the air, objects that break a body of water and cause ripples, or shockwaves from earthquakes all are considered “elastic” waves.
These waves travel at the surface or through a material without causing any permanent changes to the substance’s makeup. Now, engineering researchers at the密苏里大学已经开发了一种能够控制这些浪潮的材料，创造了可能的医疗，军事和商业应用，并有可能使社会受益。
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“控制和操纵次波长声学和弹性波的方法被证明是难以捉摸和困难的；但是，一旦方法得到改进，潜在的应用是巨大的。” MU工程学院机械和航空工程副教授Guoliang Huang说。“我们的团队开发了一种材料，如果用于制造新设备，则可以感知声音和弹性波。通过操纵这些波浪为了我们的优势，我们将有能力创造能够使社会受益的材料 - 从成像到弹性披肩等军事增强，可能性确实是无尽的。”
In the past, scientists have used a combination of materials such as metal and rubber to effectively ‘bend’ and control waves. Huang and his team designed a material using a single component: steel. The engineered structural material possesses the ability to control the increase of acoustical or elastic waves. Improvements to broadband signals and super-imaging devices also are possibilities.
该材料是在单个钢板上使用激光制成的，以刻有“手性”或几何微观结构图案，这些图案与镜像不对称（请参阅照片）。这是第一种由单个介质制成的材料。黄和他的团队打算介绍他们可以控制的要素，这些要素将证明其在许多领域和应用程序中的用处。
“在其当前状态,金属是一个被动的伴侣rial, meaning we need to introduce other elements that will help us control the elastic waves we send to it,” Huang said. “We’re going to make this material much more active by integrating smart materials like microchips that are controllable. This will give us the ability to effectively ‘tune in’ to any elastic sound or elastic wave frequency and generate the responses we’d like; this manipulation gives us the means to control how it reacts to what’s surrounding it.”
黄（Huang）表示，该材料可以控制弹性波（包括超分辨率传感器，声学和医学听力设备）以及“超级镜头”，以及“超级漫步”，这可能会大大推动超级成像，这一切都可以归功于更多的能力，这一切都可以大大提高超级成像直接聚焦弹性波。
提交以下：材料•高级
