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

之前使用心脏肌肉能量运行起搏器的尝试是依赖于材料。

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

让我们来看看石英，一种由硅和氧构成的材料。

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

我们想，好吧，让我们把它和材料结合起来。

When squeezed, a piezoelectric crystal generates a current.

当晶体被挤时，会产生流。

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

换能器是由具有‘'效应的一系列敏感元件机构组成。敏感元件机构通过‘定'震荡将信号转换成超声波。

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

材料所受力大，产生的也就。

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的方法改善这个问题。

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

材料能将力、声波及其他振动等机械应力转化为能，反之亦然。

More materials are piezoelectric than you might think.

比你想象的要多，许多材料都具有性。

These employ actuators based on piezoelectric materials which shrink or expand in response to a voltage producing a slight movement.

这些采用基于材料的执行器，材料会根据收缩或膨胀，从而产生轻微的运动。

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

随着力需求的涨和机械能的丰富，设备可能会变得更加普及。

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

在外壳上我们使用了材料，这种材料在内部膨胀时，外部会产生力。

Once she sufficiently expressed her feelings, she rang the bell under my picture, triggering the piezoelectric sensor, sending a dollar bill fluttering down.

当她充分表达完情感后，她按下了我照片下的铃铛，触发了传感器，一张美元纸币随之飘落。

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

科学家们已研制出多种合成材料，并将其应用于从医学成像到喷墨打印机等众多领域。

Here we have the piezoelectric speaker, which produces both the alarm as well as this chirp, which honestly is one of the world's most frustrating noises.

这里有一个扬声器，它既发出警报声， 也发出这种滴答声，说实话， 这可能是世界上最令人沮丧的声音之一。

This lengthening and shrinking along the length of the crystal lattice, called the piezoelectric effect, causes the leg of this tuning fork to move back and forth.

这种沿着晶体晶格的伸长和收缩，称为效应， 导致调谐叉的叉腿来回移动。

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 - 聪明的材料有点像肌肉，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（在底部图中用黄色表示）填充它们，然后再用刺激响应材料（在底部图中用浅蓝色表示）填充。