Done by Researchers group at Omar Bin Al Khattab Independent Secondary School for Boys. Under supervision from AL-Bairaq

1. AL-Bairaq
I am Discovering Materials
MANIPULATION OF LIGHT IN THE
NANOWORLD
Researchers
1-Mohammad Al-Naimi 2-Yousef Ali
3-Khalifa Al-Ajlan 4-Abdulrahman Abid

2. Outline
• Introduction of light
• Activity 1:light and spectra
-breaking down light
• Activity 2: observing diffraction
-seeing around corners
• Activity 3: observing interference
• Activity 4: observing Iridescence
• Design Project: fabricating photonic crystals
• Product Idea: Easy Color Glasses

3. introduction
Light is electromagnetic radiation within a certain portion
of the electromagnetic spectrum. The word usually refers
to visible light, which is visible to the human eye and is
responsible for the sense of sight. Visible light is usually
defined as having wavelengths in the range of 400–700
nanometer(nm),

4. Activity 1: Light and their
spectrum
 Objective:
Making a spectroscope to see light spectrum.
Procedure:
1. Cut the CD to 1 circle of the size of the toilet
paper roll diameter.
2. Cut the black paper to 2 circles of the size of
the toilet paper roll diameter.
3. Cut a narrow line in the middle of one of the
black circles.
4. Cut a wide line in the middle of one of the
black circles.
5. Tape the CD circle to one of the side of the
toilet paper roll and 1 of the black circle on the
other side.
Materials used:
1.Toilet paper roll
2.CD(scratched)
3.Black paper
4.Scissor Tape

5. 1st activity results
Discrete
spectrum
fluorescent light
source
incandescent
light source
Conclusion: Each element has distinctive spectrum
Continuous
spectrum

6. 2nd activity: observing
diffraction
 To observe diffraction experiment
• We set up a ripple tank filled half way
with water with two bobbers to create
interfering waves in water.
• We used water as an example of a
light to see the waves.
We observed that water travels in
waves.
 The water moved from one side of the ripple
tank and created water waves, they bend as
they pass by obstacles or through an opening.
As the width of the split between the bobbers
gets smaller in size , the wave appears more
clearly and sharply.

7. 2nd activity Result :
water wave bend as they pass by
obstacles or through an openings

8. 3rd activty:observing
interference
 Wave generator : we used a motor
and a thread to see the waves
 To make interference transparent
 Making interference transparent : we had a
transparent paper with 2 circles, we places them
over each other and we saw the waves.
To observe interference experiment

9. 3rd activity: result
When two waves of
same magnitude
interfere the result is
0 .

10. 4th activity : observing
Iridescence
 To observe
iridescence.
• We observed iridescence using :-
• Nail polish
• A peacock feather -seeing different shade of
the feather’s colour by using different kind of lights
• Different gift wraps
We observed that colors appear to
change color due to difference in
structural size because of iridescence.

11. 4th activity results:
Result:
Conclusion: peacocks are known for
the vibrant color of their feathers .
Surprisingly ,this color does not come
from a pigment

12. Design Project : Fabricating
phonetic crystals
 To create photonic crystals
• Producere-In this activity we used a slip
and we put on two different polystyrene
drops and heated it.
Results– the polystyrene drops
changed to pink and green crystals.
The difference in colors is due to the
size of the nanoparticles.
1 32

13. Easy color glasses
Our idea will help people who suffer from
colorblindness. These people have
decreased ability to see color or differences
in colors. Color blindness can make some
educational activities difficult. Buying fruit,
picking clothing, and reading traffic lights
can also be more challenging.
Aim of the work (objectives)
Our main purpose is to Design eye glasses that
correct the colors for people that have color
blindness.

14. Easy color glasses
Materials and Methods
1-corkboard
2-lego
3-marker
4-colors
5-Stereo traffic signal
6-Artificial apple

15. Easy color glasses
1-It will help them to produce ideas for
this project
2-Working on the development of contact
lenses and produce special glasses color
blind are very similar to the work of the
contact lenses
Recommendations:

16. Conclusion
It is highly recommended to make
further studies on our product idea ,and
try to spread it out between people
whom suffer from color blindness. The
product can be improved by making a
digital screen that translate the colors
and spell it.

17. Acknowledgment
Many thanks to AL-Bairaq team from Center for
Advanced Materials (CAM), Qatar University for
supporting us during our journey with a AL-
Bairaq.
Also, we would like to thank the partners UNESCO
& Qatar National Commission, and the sponsors
Ras Gas and Shell.