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