welcome to TTI and welcome to a whole new world of science today we're going
to explore the seven most unique materials that you would think would
have to be from the world of science fiction but stay tuned because we're
going to run where the science behind So my friend sit back relax and enjoy
the video number seven ultra hydrophobic material generally there is some
interaction between solid and liquid but it's difficult to imagine these unique
tiny drops that are unable to wet the surfaces of material science has made
some great progress in recent decades in the field of hydrophobicity and opening
a wide range of application
the hydrophobic surface is based on the Lotus effect this effect was discovered
in the 1970s from the microscopic observations of the natural hydrophobic
properties of the surface of a lotus leaf the Lotus plant is comprised of an
adhesive nonpolar and wax-like substance which is what causes the Lotus effect or
hydrophobicity which is featured by the lotus flower which always appears clean
despite growing in muddy areas
research in this field is very advanced and focused on finding a material with
the highest level of water repellency to achieve a material extremely water
repellent which would be a huge help for many industrial fields this is a live
demo of a hydrophobic surface it's water repellency is investigated by simply
insulating it and dipping it in water the insulated device is protected by
water damage which we extremely love for our smartphones during the rain in
addition your walls can be protected from any dirt after being coated with
this magic materials
number six triiodide nitrogen triiodide is one of the chemical compounds which
is highly unstable oil it can be detonated by contact or anybody labels
nitrogen triiodide is the molecule consisting of single nitrogen atom which
is bonded by three iodine atoms it's structure is similar to a pyramid with
nitrogen at the tip and iodine is much larger than those of nitrogen telling
each other you might have heard that nitroglycerin which is another type of
contact explosive can go off when you hit it with a hammer while iodide with
its ammonia should be kept in moist conditions in a dark place where it is
stable but if it's sufficiently dried at the right moment it can blow up from
just the slightest disturbance this explosion releases a purple iodine vapor
which is irritating and can actually be toxic with extended exposure
in fact on April 1st it earned the credit for being a highly explosive
substance sharing the same core as the famous nitroglycerin number 5 hydrogel
hydrogel is a gel polymer able to absorb water 30 to 60 times its own volume and
it's able to change its size under the influence of temperature it's composed
of small white crystals that are able to absorb a lot of water
the total absorbency and swelling capacity are controlled by the type and
degree of cross linkers used to make the gel thanks to its amazing water
absorption capacity it's used in greenhouses and agricultural nurseries
to retain water and moisture in soil for a much longer time in recent years the
hydrogel has been used as a single plant substrate this product is also getting
attention in the field of decorative ornamentation indoors
the material also is commonly used for medical purposes for tissue engineering
and in sustained-release systems of medication number four nitinol nitinol
is composed of nickel and titanium in almost equal proportions it has the
special ability to rebound to its original form even after you mold it
into different shapes a phenomenon called the memory effect which is driven
by heat exchanges it is able to repeat this process many times over without
losing the ability to regain its original shape this material has a wide
range of applications in the fields of electronics and mechanics it can also be
used in smartphones robotics and medical industries development and continuation
of this material is very expensive but this problem can be solved by the mass
production of the material in the coming years number three metal gallium gallium
metal is one of the least known in the scientific field this strange metal is
very mysterious and difficult to understand for members of the scientific
community gallium is a soft metal which is a brittle solid at low temperatures
and liquid at temperatures greater than twenty nine point seven six degrees
Celsius if you keep it in the palm of your hand for just a few minutes your
body heat will cause the solid metal to gradually turn to a liquid gallium has
the same metallic color in both solid and liquid forms upon solidification
into a mold it becomes just like this coin this metal is very cool because
it's a non-toxic material but it's certainly not cheap one kilogram of this
metal cost three thousand dollars which is an extremely high price that goes
showed just how much it must cost to extract it number two
aerogel also known as frozen smoke aerogel is a broad term used to talk
about a special group of materials they have been used since the early 1960s in
space travel but scientists are now finding multiple uses thanks to its
properties the aerogel is the lightest solid material that exists today its
chemical structure is similar to glass but its density is a thousand times
lower and it's only three times as dense as air because it contains 99% air
ingredients with silica gel despite its low weight this material is very strong
it has heat insulation properties that have been exploited by NASA engineers to
the fullest nasa use this material in several of its spacecraft to provide
heat protection from the sun today the aerogel is used in the detection of
nuclear radiation absorption of long-lived nuclear waste thermal
insulation and detection of harmful microorganisms number one magnetic
Thinking Putty this stuff is pretty cool to play with this magnetic monster is so
amazing and full of fun it can be created by simply adding ferric iron
oxide powder to regular silly putty and then the putty becomes ferromagnetic
only strong magnets that are also ferromagnetic will be engulfed by this
tiny Magnum monster if you place a Ferro magnet in the magnetic field it will
experience a force that pulls into a region of stronger magnetic strength
thank you for watching I hope you liked it now calmy guys which one of these
materials do you find the most amazing and why let me know in the comments and
if you're new here then feel free to subscribe I'll catch you in the next
video peace