Belinda Smith
speaker
2,605 appearances
27 recordings
4 series
first heard Apr 2026
last heard 2d ago
Belinda Smith’s voice in public audio — every appearance, attributed to the second.
Trend
recordings per month · last 12 monthsRecordings per month over the last 12 months — 27 in all, peaking in Jul 2026 with 6.
Appearances
There's energy there to be taken.
We're just not harvesting it.
Correct.
And so the term for these materials is...
piezoelectric materials.
Piezoelectric.
So what does piezoelectric mean?
It comes from the Greek word piezo, which means to squeeze.
And so you have to squeeze and get out electricity.
So if you look at the fundamentals of what that means, imagine you have a bulk material that you squeeze.
Inside the molecular layers within that arrangement of atoms, as you squeeze it, you end up getting a positive and a negative areas of charge.
So you get charge separation.
What that means is that you will get a mini battery.
Are there any piezoelectric materials that are used today?
If you look at, for example, your barbecue lighters and those igniters, when you tap that, a flick that you hear on that crystal is actually a flick on a piezoelectric crystal.
And so you flick it, it makes a little spark, and then as that gas comes out, it ignites.
The problem with these kind of igniters and why we look at specifically nylon is that they're ceramics.
They're brittle crystals.
So when we look at our applications, we want something that's going to last forever.
Nylon ends up sticking out because it's durable.
Showing 2241–2260 of 2,605 · page 113 of 131
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