B-Smart_July'17

We use the military anecdote above because it was
these military research groups that first
conceptualized Smart Dust but the practical
application of the technology can be applied to
almost any industry. Dust in the factories monitoring
the output of machines. Dust in your body
monitoring your entire state of well-being. Dust in
the forests tracking animal migration patterns, wind
and humidity. Dust in the fields monitoring the
crops. A single smart dust mote typically contains a
semiconductor laser diode and MEMS beamsteering
mirror for active optical transmission, a
MEMS retro reflector for passive optical
transmission, an optical receiver and a power source.
The advances in digital circuitry are what enable the
motes to become so small while still having the
ability to have a battery, a nominal amount of RAM
and a wireless transmitter, likely powered by RFID
The challenges for Smart Dust are to create a
package that includes all the elements needed to
perform sensory measurements, while also being
able to communicate back to a base station.
References:
https://www.slideshare.net/joyjophin/smart-dust-
45609411
PERFECT MATERIAL FOR FLEXIBLE
BASED ELECTRONICS IS BASED ON A
PLANT
From smart windows to foldable screens: Don't have
a belief, then let's have a look....Along with being
super strong , the new aerographene is bendy,
conductive and mimics the structure of a plant
stem." Grapheneaerogel is 7. 5 times lighter than air
and about 1000 times less dense than water."
To find out if they can create an aerogel with both
strength and resilience features ,Bai and his team
turned to the powdery alligator-flag (Thalia
dealbata), an aquatic plant native to South America
and Mexico.
Taking clues from the plant's complex structure with
grid-like layered microstructure, the team used
bidirectional freezing to mimic its architecture in
graphene aerogel.
First, graphene oxide particles are dispersed in
water, to form sheets. Once the liquid is frozen, the
formed sheets form a 3Dnetwork similar to ice
crystals. Finally, thermal reduction and sublimation
produced graphene aerogel that mirrored the bridged
layers of the powdery alligator-flag stem.
Next, the aerogel undergoes compression tests to see
whether its architecture produced
Farheen Sania
ECE – III Year
strength and resilience. After 1,000 compressive
cycles the researchers discovered that the graphene
aerogel was capable of supporting over 6,000 times
its own weight and get back to its true state. The
“As long as the mind can envision the fact that you can do something, you can do it, as long as you
really believe 100 percent." -Arnold Schwarzenegger
17