Piezo 101: Squeezing Electricity Since 1880
The year is 1880. Two French scientists, the famous Curie brothers (Pierre and Jacques Curie), made a world-changing discovery: the piezoelectric crystal.
Their work stemmed from observing the pyroelectric properties of certain special crystals, which led them to question whether applying physical force would produce the same effect.
The word “piezo” comes from the Greek vocabulary, meaning “to press or squeeze.” What they discovered is that when physical force or pressure is applied to this special crystal (quartz being the first observed with this property) at a specific angle, it creates a polarity and electrical discharge.
I like to think of this as nature’s grumpy battery: stress it out, and it throws a voltage tantrum.
To illustrate this better, see images and animation below.
Image 1: In this image, the molecular alignment of the crystal (silicon dioxide) is in a stable state, with all sides of the borders at neutral polarity.
Image 2: In this image, the molecule is “squeezed” at a specific angle, causing a shift of the electrons. This makes the top border more positively charged and the bottom border more negatively charged.
Image 3: In this image, the molecule is “stretched” horizontally, again causing a shift of the electrons. This makes the top border more negatively charged and the bottom border more positively charged.
Repeating this action in a proper sequence will generate an electrical current (see animation below).
In the year after, Lippman predicted the converse effect property of the crystal (applying an electrical field will physically change the crystal structure), which was later confirmed by the Curie brothers.
Fast forward to 2026, and you can see thousands of applications of piezoelectric crystals—from basic household cigarette lighters and inkjet printer heads to clocks and computers, medical-grade ultrasound probes, and self-powered wearables.
Now you know. Next time your BBQ lighter sparks with a satisfying click, blame (or thank) piezo—it’s the crystal getting “pressed” into action without breaking a sweat.
References:
- A brief history of piezoelectricity. American Piezo. 2023 Mar 20. Available at: https://www.americanpiezo.com/blog/a-brief-history-of-piezoelectricity/
- Piezoelectricity. Wikipedia. 2026.
- The piezoelectric effect history Internet. Hy-Q Australia; 2023 Available from: https://www.hy-q.com.au/the-piezoelectric-effect-history/
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