This document summarizes several experiments and projects involving PVDF and piezoelectricity. It describes experiments comparing the sensitivity of flexible and rigid PVDF to different stimuli like flickering, scratching, and blowing. It also details an experiment dropping coins on PVDF to measure the resulting voltages. Finally, it outlines a student design project to create a sensor for a car that converts sound to light, aimed at helping deaf and dumb people drive more safely.

2. Outline

6. OUTPUTPROCESSORINPUTDEVICE
Movement and
voice.
Electric circuitVoice
NumbersElectric circuitTemperature
SoundElectric circuitSound & Touch

7. Procedure: This activity required making a
table as well but with two different kinds of
PVDF (is a highly non-reactive and pure
thermoplastic fluoropolymer ), one of
them was rigid and the other was flexible
Two A&B

9. With
substance
Without substance
FlexibleRigidFlexibleRigidDVDF
LessMoreLessMoreFlick
MoreLessMoreLessScratch
MoreLessMoreLessBlow
MoreLessMoreLessTalk
Result :
Conclusion :
We found out that the flexible is more
sensitive than the rigid , but the Rigid is more
sensitive in flicking

10. Procedure: recognize the
structure of a polymer

11. Activity4:-

12. Activity 5:-
•Piezoelectricity
The word piezoelectricity means
electricity resulting from
pressure.
•Pyroelectricity
Is the ability of certain materials
to generate a temporary voltage
when they are heated or cooled.

13. Procedure:
•At this activity we had to measure the three coins
before starting to do anything
•After that we dropped the coins in the same
height for three times on the PVDF.
Design project: Design a Coin Counter

14. Average
voltage
v3v2v1
0.0790.1490.0400.040M1
2.2g
0.1330.1310.0130.077M2
4.6g
0.6330.1040.0670.532M3
5.6g
Average VoltageM
unknown
1.72
1.01v1
0.71v2
0.51v3
•Lap bro

15. Our project will help the deaf and dumb people
by designing a car using a sensor emitting a red
light when any body or things pass by the car it
will help them to see the
light and being carful to their movement
•According to our observations we found that
some relatives of our teachers are deaf.
•Helping those people (deaf) to make
them live as normal people.
A car for Deaf and Dumb

16. Hypothesis:-
if we could find that sensor which
convert the sound to the red light
which is placed at around the car
then it’ll make the deaf people
drive safely.

17. A Car for Deaf and Dump
Methods and Materials
(tools):-
1- cars
2- foam board
3- sensor which converts sound to light in
the car.
procedure:
when a light comes out of the sensor and a
sound being produced, an indication of red
signal will be produced for deaf and
dumb.

18. A Car for Deaf and Dumb
Results:
 The use of sensor which converts sound to light in
the car for deaf and dumb will increase the ability
to use safety and security of the car while driving.
 We found that the model of implementation of this
sensor will provide service for people with special
needs and improve their performance in driving.

19. 1.We recommend to make special logo
as sticker to put on these cars to
educate the community about these
deaf people.
2.We recommend to give this project to
a company which will take care of the
study as well as they know how to
convert the sound to red light.

21. A big thank you for all the teachers that helped us, our school
umm hakeem for encouraging us and AL-Bairaq team from Center
for Advanced Materials (CAM), Qatar University for supporting us
during our journey with a AL-Bairaq.
Also, I would like to thank the sponsors UNESCO, Qatar National
Commission, Ras Gas, Maersk and Shell.