The textile , that keeps our body both cool and warm depending on which side faces out. its a new dimension in smart textile sector. In normal temperature this product will work effectively . this innovation can save huge amount of energy. It is developed by Stanford university researcher team.

1. Recent Innovation in Textile
DOUBLE-DUTY TEXTILES

2. Presented By
MD:KAISAR RAHMAN
ID:B201512006
MD:HASAN AL ZAMAN
ID:B201512007
MD:ZUBAYER FERDOUS
ID:B201512008
PRANTA BISWAS
ID:B201512009
MD:SAIFUL ISLAM
ID:B201512010
PRESENTED TO
MR: PRONOY
HALDAR
Professor,TechnicalTextile.
SHAHIDABDUR RAB
SERNIABATTEXTILE
ENGINEERING
COLLEGE,BARISHAL.

3. WHAT IS INNOVATION?
“INNOVATION IS NOT THE
PRODUCT OF LOGICAL
THOUGHT,
ALTHOUGH THE RESULT IS
TIED TO LOGICAL
STRUCTURE"

4. DOUBLE-DUTY
TEXTILES

5. Developed By:
Stanford University
Researchers Team
Funded By:
Advanced
Research Projects
Agency–Energy,
U.S. Department of
Energy.

6. So, What Actually
is This Product?

7. PROPERTIES
Comfortable
Ability to shuttle away heat from the body as
infrared radiation
Breathable
The ingredients of the fabric allows the
passage of moisture exactly like usual textiles.
Versatile
The product is available with versatile color &
style , although it’s inspired by transparent
kitchen wrap
Machine Washable
The woven fabric is of course machine
washable.
Along with a bunch of properties, the following are the core one

8. Components
The following micrometer-scale components remain one above another from left to right &
forms the fabric.
1st layer 2nd layer 3rd layer 4th layer 5th layer

9. COMPONENT PROPERTIES
Carbon Sheet Breathable Polyethylene Copper Layer
 Low thermal
conductivity.
 Emits infrared radiation
effectively.
 Moderate aesthetic
property.
 Allows the passage of
moisture.
 Emits infrared radiation
effectively.
 Transparent.
 Thickness is only half of
the carbon layer.
 High thermal
conductivity.
 Traps heat as infrared
radiation.
 Moderate aesthetic
property.
Along with the core fabric, the following 3 material
mostly affects the heat controlling mechanism.

10. CONSTRUCTION
The material comprises of a bilayer
of carbon sheet & copper layer &
the fabric is sandwiched between
them. Both sides of this bilayer are
covered with a breathable polymer
nonporous polyethylene, allows
infrared radiation to pass through
them.
It features a thin copper and carbon layer sandwiched between a
nonporous polymer that can keep the wearer warm or cool,
depending on which way round it is.

11. Body Mechanism
of Heat Control
When it’s cold,
 The hairs in our skin stand out to trap warm air.
 Eventually, we may start shivering to produce
more radiant heat in our muscles.
When it’s hot,
 We release heat as infrared radiation from our
skin.
 If we’re still warm we start to sweat.
 Water evaporating away from our bodies carries
a large amount of heat with it.
But those mechanisms only
help within a few degrees!!!!!

12. Heat Control Mechanism of
this fabric
Heating………..
 On one side, copper coating traps heat between a
polyethylene layer and the skin
 Worn with the copper layer facing out, the material
traps heat and warms the skin on cool days.
Cooling………...
 On the other side, carbon coating releases heat
under another layer of polyethylene.
 With the carbon layer facing out, it releases heat,
keeping the wearer cool
The infrared radiation emitted by the body
accounts for 40-60 percent of human heat
loss. The team created this material such a
way that heat is either insulated in it or let to
escape in air. The capability of releasing or
keeping heat energy automatically depends
on which side faces out.

13. BENEFITS
Comfort
Cotton is a good material to cool
the body down, while wool
warms the body up.These
properties are manipulated in
this product
Cotton + Wool = Reversible Fabric !!!!!!!!
Fashion
Product is available
within a large number
of color & style. Can
be used as a
multipurpose &
fashionable item
Certainly up to the
mark.

14. Energy
Efficient
Saves up to 10%
energy for every 1℃
in air-conditioning or
central heating
Why don’t you cool and heat individual
people?
Instead of the whole building……………

15. Aesthetics
Numerous testing has been carried out to determine it’s ability &
practicality
Handle
 Studies with a synthetic
skin sample showed the
material can increase a
person’s range of
comfortable
temperatures over 10 F.
 Postdoctoral fellow Po-
Chun Hsu said about the
potential range of heat
release is even much
larger — close to 25 F.
 Compared to a cotton
sample, their fabric kept
artificial skin 2℃ cooler in
a laboratory test.
 It’s possible enough to
stop a person from ever
reaching for a fan or the
building thermostat.
PRACTICAL PHENOMENA
Energy Efficiency
 The team’s first textile
could save a building
full of workers 20 to 30
percent of their total
energy budget.
 With inhabitants
wearing a textile like
that, buildings in some
climates might never
need air conditioning or
central heating at all.

16. Growth
Strategy
Good news is they’ve
already made sure
that their fabric will
be machine washable.
 Ideally, when we get to the stuff you want to wear on skin,
we’ll need to make it into a fiber woven structure.The next
step of the team is to make this concept into a fiber structure
so that these fibers can be woven together to make a stronger
& more elastic textile that people will feel comfortable to wear
 The team’s ambitions are to create an easily manufactured,
practical textile that people could use to save huge amounts of
energy around the world.
 They envision clothing with medical devices and even
entertainment printed right into the fabric.

17. Market Opportunity
This work really highlights the significant opportunities in combining thermal engineering
concepts with nanophotonic structures for creating novel functionalities. In case of
industrial production, the team assumes the following market size!
Share for the overall
production of smart textile
Million
Unit garments will be
produced within 2020
Billion
Value of the finished
apparel within 2019/2020

18. SUMMARY
The double-duty textile has a
promising prospect for future
daily use. Altering temperature
controls by only a couple of
degrees effectively affects
vitality utilization.
Although the fabric isn't quite
wearable yet at present, we are
only seeing the beginning of
many creative ideas that can
come out of such combinations.

19. Team Members
Yi Cui
Team Leader
Professor Of Materials
Science And
Engineering, STANFORD
UNIVERSITY
Po Chun Su
First Author
Postdoctoral Fellow,
STANFORD
UNIVERSITY
Shanhui Fan
Author
Professor Of Electrical
Engineering,
STANFORD
UNIVERSITY

20. Contributors
Chong Liu,
Alex Y. Song,
Jin Xie,
Kai Liu
Lili Cai
Ze Zhang,
Yucan Peng,
Chun-Lan Wu
Shang Zhai
Peter B. Catrysse
Arun Majumdar
Postdoctoral Fellows,
STANFORD
UNIVERSITY.
Graduate Students,
STANFORD
UNIVERSITY.
Senior Research Engineer, Stanford University.
Professor Of Mechanical Engineering, Stanford
University.

21. Thank you!

22. Feel Free
to ask ANY
QUESTIONS