The main purpose of this presentation is to introduce a new technology called E-SKIN.

1. AMERICAN INTERNATION UNIVERSITY-BANGLADESH
E-SKIN
Presented To:
RETHWAN FAIZ
Presented By:
Miraz,Magfurul Awwal 14-25537-1
Ahmed, Md.Foysal 14-25539-1
Muin, Muhtasim 14-25600-1
Rehnuma, Farhin 14-25520-1
Chowdhury, Tulsi 14-25727-1

2. Overview
• Introduction
• Development of E-SKIN
• E-SKIN Features
• Structure of E-SKIN
• OLED
• AMOLED
• How display is converted into E-SKIN
• Advantages and Disadvantages
• Applications
• Future scope
• Conclusion

3. INTRODUCTION
What is ELECTRONIC SKIN?
Material which mimics the Human Skin in one or more
ways.
Human skin can sense pressure , temperature , stretch and
can heal itself
Where it is used?
ROBOTICS
HEALTH APPLICATION
SMART WALLPAPERS

4. DEVELOPMENT OF E-SKIN
• 2010:
 Attaching nanowire transistors to sticky substrate, embedded in thin pressure
sensitive rubber-capable of sensing wide range of pressures(California University)
 First prototype for e-skin
• 2011:
 Stretchable solar cell used to power the electronic skin(Stanford)
• 2012:
 Self healing capacity
 Made by plastic and nickel
• 2013
 Created an electronic skin that lights up when touched (UC Berkeley)

5. E-SKIN FEATURES
• Optimization of pressure sensors & Electronic read out-but no
Human Readable output.
• The new e-skin: Spatially map the applied pressure and
instantaneous visual response through OLED.
• BUILT IN ACTIVE ORGANIC LED DISPLAY: OLEDs are turned on
locally where the surface is touched and the intensity of the
emitted light quantifies the magnitude of the applied pressure.
• System on plastic Demonstration 1.Thin film Transistor
2.Pressure sensor
3.OLED arrays

6. E-SKIN FEATURES
• Can measure electrical activity of the heart ,brainwaves &
other vital signs.
• It can record electrical activity along the scalp.
• Muscle contractions in the neck can control the mouse in a
computer game.

7. How Visual response is achieved?
Passive matrix
• Grid of vertical and
horizontal lines
• Each pixel is controlled by
an intersection of 2 wires
• Color and brightness is
altered by changing
electrical signal.
Active matrix
• Each pixel is controlled by TFT
thin film transistors
• Act as switch for addressing
either voltage or current devices
• TFTs contains Semiconductor
enriched nanotubes as the
channel materials.
• Carbon nanotubes-High current
drives for OLEDs

8. Structure of pixel of e-skin
• Nanotube TFT drain
connected to anode of
OLED.
• OLED: Bi-layer structure
whose color controlled by
emissive layer material.
• PSR: Electrical contact with
cathode of OLED.
• Conductivity of PSR α
applied pressure

9. OLED characteristics
• Led whose electroluminescent layer is organic compound.
• Low power consumption, Faster refresh rate
• Better contrast
• Greater contrast, Brightness.
• Better durability-Better temperature range.
• By simply changing emissive layer the emitted peak
wavelength can be adjusted to 489,523,562,601 nm.

10. How to control OLED
Control circuit: By interconnecting the anode of an OLED with
carbon nanotube TFT.
By sweeping the gate voltage/Power supply Vdd of the
control TFT, the current flowing through OLED can be
controlled which translates in to the modulation of OLED
brightness allowing the OLEDs to be turned ON and OFF.

11. AMOLED
• We can arrange above described single pixel OLED control
circuitry in to an active matrix OLED which then integrated
with pressure sensor to get e skin.
• Above figure represents Single color flexible AMOLED
display with -5 and 10 v applied to all of the scan and data
lines respectively

12.  The above figure shows full color display being fully
turned on in the relaxed and bent states.
 Each pixel can be individually addressed using nanotube
tfts.

13. How to convert display in to e-skin
• PSR lamination on the top of the leads to make
Pressure sensitive.
• The cathode of each OLED is connected to the
ground through PSR. Application of pressure:
shortening of tunneling path between conductive
carbon nano particles-reduced resistance of PSR
modulates the current flowing through the OLEDs
and changes the brightness of the output.

14. I-V characteristics

15. Video Demonstration-eSkin

16. Advantages & Disadvantages
Advantages:
• Reduces wires.
• Compact in size, less in weight.
• The device is so floppy, and flexible.
Disadvantages:
• Cost is high
• Single use

17. APPLICATIONS
• Automatic control panel
• Interactive input devices
• Robotics
• Medical & Health monitoring device

18. Future Scope
• In future even virtual screens may be placed
on the device for knowing our body functions.

19. Conclusion
• The Electronic devices gain more demand in
the market when they are compact in size and
best at functioning.
• The Electronic skin is one such device which
depicts the beauty of electronics and its use in
daily life

20. References
• https://en.wikipedia.org/wiki/Electronic_skin
• http://www.oled-info.com/introduction
• http://www.sciencedirect.com/science/article/pii/
• http://onlinelibrary.wiley.com/doi/10.1002/adma.

21. THANK YOU