Piezoelectricity uses certain crystals that generate electric current when subjected to mechanical pressure. Quartz, Rochelle salts, and tourmaline exhibit the piezoelectric effect. This effect can be harnessed to generate electricity from walking traffic on roads or dancing floors. Piezoelectric tiles beneath roads could generate 200 kWh of power per hour per kilometer of a single lane. This piezoelectric energy harvesting requires no infrastructure and uses wasted mechanical energy without occupying a large area.

1. PIEZOELECTRICITY
EVOLUTION AND FUTURE OF TECHNOLOGY

2. INTRODUCTION
This topic deals with the
future perspective of
electricity power
generation produced
from mechanical
pressure (including
motions such as walking)
with the help of

4. Once the
pressure is
relieved,
electrical current
flows across the
material.

5. The crystals
become polarized
and produce an
emf or voltage that
is proportional to
the amount of
force

6. The piezoelectric effect
occurs in certain crystals.
Those that are affected
include quartz, Rochelle
salts and tourmaline.

7. Thin metal
Quartz
material
Metal
coating

8. Quartz crystals are found in
watches, filters, injectors.
Rochelle salts, because of their
sensitivity, are favored for audio
applications such as
loudspeakers, headphones and
microphones.

9. APPLICATIONS

10. 3. BY PLACING PIEZOELECTRIC PILES
BENEATH THE ROAD WE CAN PRODUCE
200KWH PER HOUR ON AN AVG PER KM
OF A SINGLE LANE.

12. Recently
piezoelectric
floors have
debuted in a
handful of
innovative dance
clubs around the
world.

13. PIEZOELECTRIC EFFECT
1. Sound waves
striking a PZ
material
produce an
electrical signal
2. Can be used to
detect sound (and
echoes)!

14. Fig 1
Fig 2
Fig 3

15.  In early 2008, the
East Japan Railway
Company (JR East)
installed
piezoelectric pads in
the flooring at the
ticket gates at a
station in Tokyo

16. ADVANTAGE
S

17. Infrastructure is
not required for
this alternative
energy
harvesting
system.(such as
NTPC…)

18. A Vast area is
not
required.(such
as solar energy
production…)

19. Revolutionary
feature is that it
harvests wasted
mechanical energy.

21. THANK YOU