1.
SENSITIVE
SKIN

2.
OUTLINE
INTRODUCTION
SKIN MATERIALS
DEVICES
SIGNAL PROCESSING
ADVANTAGES
DISADVANTAGES
APPLICATION
CONCLUSION

3.
INTRODUCTION
What is sensitive skin?
It is a large area flexible array of sensors, with data
processing capabilities, with the ability to sense
the surroundings.
It make possible the use of unsupervised machine
in our midst.

4.
INTRODUCTION
Machines in unstructured environments
Societal needs and concerns
a) Health industry
b) Eco friendly
c) Difficulties of acceptance

5.
SYSTEM COCEPT
FIG: Sketch of interconnects between sensors,
intelligence and actuators

6.
RESEARCH ISSUES
Skin Materials
Sensing Devices
Signal and Data Processing
Applications

7.
SKIN MATERIALS
Hold embedded sensors
Flexible
Stretch, shrink and wrinkle
Novel wire materials

8.
Substrate / interconnect issues
1. Stretching and bending
make the substrate thin or place interconnects at neutral
plane

9.
MODELS
Three different models of substrate /
interconnect system evolved:
1. Saran wrap model
2. Soccer ball model
3. Panty hose model

10.
Adding Sensors To Substrate
1.Hybrid Approach

11.
2.Integrated Approach
In here circuits are directly on the substrate .
This method avoids the high cost and reliability issues of
hybrid assembly.

12.
3. Distributed Intelligence Approach
A network of optical fiber are used to sense the properties

13.
Devices For Sensitive Skin
1.Flexible or deformable
2.Power storage
3.Deployed 2-D array
4.Smaller array
5. Self sensing ability
6.Measure distance to objects
7.Studies in h/w architecture
8.Unique properties

14.
Large - Area Electronics
1.Organic electronics and optoelectronics on
flexible substrates.
OTFT

15.
2. Thin Film MEMS
Thin film micro electromechanical (MEMS) devices on
plastic substrate demonstrate that mechanical sensors
can be built on flexible substrate .
3. Nanostructures
Ultra large area ICs embedded into electrotextiles

16.
Manufacturing Of Large Area Sensitive
Skin
Printing techniques
1.Direct Printing
2.Laser Writing
3.Nanoimprinting

17.
Direct Printing

18.
Laser Writing

19.
LASER WRITING
Laser writing is combined with MAPLE process:
1.Electronic circuit patterns are formed
2.Move the receiving substrate 1 beam dia.
3.Assemble to get desired pattern

20.
Nanoimprinting
Principle
A thickness is created which
is transferred through resist
layer via on O2 plasma
based etching process.
Fig shows a nanoimprint
lithography (NIL)

21.
SIGNAL PROCESSING
Fault Tolerance
Data Reduction
Data Processing

22.
ADVANTAGES
Reversal of negative impacts of machines
Reduction in weight and thickness
Can be rolled
FIR AND IIR filters conserves the battery power.
Friendly to environment

23.
DISADVANTAGES
Skin be able to conform to arbitrary shapes.
Able to flex, bend and stretch
Properties of fusion vary when components fail
or repaired.

24.
APPLICATIONS
1.Human skin or Wearable skin
2.Sensitive skin for machines
3.Environmental sensitive skin
4.Actuated sensitive skin

25.
FUTURE SCOPE
Develop new inexpensive consumer electronics
Displays, printers
Store and information
Ranging from medicine and biology to machine
industry and defense
space exploration, mine detection

26.
CONCLUSION
Sensitive skin will make it possible to have unsupervised machinery
in unstructured, unpredictable surroundings. It will make the
machine cautious and eco friendly. It is an enabling technology with
far reaching application The state of art in the areas that are basic to
the development of skin technology shows that highly efficient
devices are feasible. All this non withstanding the fact that the
existing prototypes are clumsy, have low resolution, accuracy and
reliability, and are not yet ready for commercialization.