Previous attempts to use cardiac muscle power to run pacemakers relied on piezoelectric materials.

之前使用心能量运行起搏器尝试是依赖于材料。

And we thought, OK, let's combine it with a piezoelectric material.

我们想，好吧，让我们将它与材料结合起来。

Piezoelectric quartz crystals in the sonar's transmitter vibrated when they were subjected to alternating voltage.

声纳发射器中石英晶体在受到交流时会振动。

Let's look at quartz, a piezoelectric material made of silicon and oxygen.

让我们看看石英，一种由硅和氧制成材料。

Piezoelectric materials can have different structures.

材料可以有不同结构。

Piezoelectric materials turn mechanical stress, like pressure, sound waves, and other vibrations into electricity and vice versa.

材料将力、声波和其他振动等机械应力转化为能，反之亦然。

Dr Zhang and Dr Yang speculated that they could improve matters by arranging for their piezoelectric composites to be more dramatically deformed.

张浩和杨斌推测，他们可以通过让复合材料更加变形方法改善这个问题。

More materials are piezoelectric than you might think.

材料比您想象要多。

And the stronger the compression on piezoelectric materials, the larger the voltage generated.

并且对材料缩越强，产生就越大。

Transducers are made from arrays of tiny piezoelectric structures that convert electrical signals into ultrasound waves by vibrating at an appropriate frequency.

式换能器是由具有‘'效应一系列敏感元件机构组成。敏感元件机构通过‘定频'震荡将信号转换成超声波。

And piezoelectric devices may become even more common since electricity is in high demand and mechanical energy is abundant.

由于力需求量大且机械能丰富，设备可能会变得更加普遍。

And on the outer shell we have the piezoelectric material, the material that when the inside gets bigger, the outside produces the electricity.

在外壳上我们有材料，当内部变大时，外部就会产生力。

Scientists have created a variety of synthetic piezoelectric materials and found applications for them in everything from medical imaging to ink jet printers.

科学家们创造了多种合成材料，并在从医学成像到喷墨打印机各个方面找到了它们应用。

These generate power and send it to a control board that operates a pair of piezoelectric actuators – clever materials that work a bit like a muscle and contract when a voltage passes across them.

它们产生能并将其发送到控制板，该控制板操作一对致动器 - 聪明材料有点像，当通过它们时会收缩。

First we fill them up with the piezoelectric material, which is represented in yellow in the bottom figure, and then we fill it up with the stimuli-responsive material that is the light blue in the bottom figure.

首先我们用材料填充它们，在下图中用黄色表示，然后用刺激响应材料填充它们，在下图中用浅蓝色表示。