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Send Your Name To Mars - Mars 2020 Perseverance - NASA event

Have you ever wondered you are going to travel to Mars? As a common man, it is near too impossible for thinking about the situation but NASA had started a new program called Send Your Name To Mars. Under this program, NASA has started an online form filling. Link to this program will be given. To send your name to mars you have to just go through the link which I will provide you. If you do not know how to fill the form, fill your form with the science behind science- Here is the link   "Send Your Name to Mars: Future Mission" Fill the form fast and make your friends jealous of the boarding pass. But don't make them that jealous share th e link to your friends and family as fast as possible. The link is given here for how to fill form and link for the form:- Share the link fast because forms are filling fast:- https://truesciencebehindscience.blogspot.com/2021/02/send-your-name-to-mars-mars-2020.html First, you have to go through the link given below: The link will direct
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Why is Graphene our future? - Graphene - truesciencebehindscience

Graphene an allotrope of carbon. Today with wide-ranging demands. You know whats the price of graphene. For about 10 grams of graphene, the price is ₹ 2300 ($ 31.47 price on Amazon) so, you can imagine 1 kg of graphene would be ₹ 2,30,000 ($ 3147) but what is so different in it which made it so valuable. So, let us find the science behind science -

 


Read this also: An unimaginable state of matter - Superfluid - truesciencebehindscience

First, we should know how it is manufactured. There are five different methods to produce graphene known as Micro-mechanical exfoliation, Liquid-phase exfoliation (LPE), Chemical vapor deposition (CVD), Flame synthesis, Pulsed laser deposition (PLD). We will learn these methods on a different day.

 

Now, we will learn their properties

Physical properties:-

Graphene has a structure in which 3 electrons of carbon are connected to the other 3 carbon atoms and one electron is left free. Graphene has very little density somewhat 2.267 gm per cube centimeter. It's predicted that graphene has the highest melting point of about 3652 - 3697 °C. They can be used in sensors too which will work faster than the normal sensor. 

Mechanical strength:-

Graphene is harder than a diamond but has elasticity more than rubber. It is highly impervious that small atoms like Helium can't pass through it. It is stronger than steel but lighter than Aluminium. Let's take an example of a thin layer of graphene (as thin as paper) a person is required to put a force of 2000 N on the sheet from the nib of pencil But then also it fails.

Electronic property:-

As we know, Graphene has a structure of carbon connected like a honeycomb. Three electrons of carbon are connected to the other three leaving one electron in a free 3-dimensional world Which gives it some extraordinary properties like It has 13x better electrical conductivity than copper. It has 100x faster electron mobility than silicon.

Optical property:-

Graphene absorbs only 2.3% of reflecting light. In common they are almost transparent. But, If one atom thick layer absorbs 2.3% of light then 10 atoms thick layer will absorb 23% of light so, as the thickness enlarges it loses its transparency. It can be used in mobile screens to lessen the use of indium-based electrodes to organic light-emitting diodes (OLED) which will use less power.

 Disadvantages of graphene:-

  • Once electricity flows through it, can't be turned off (switched off) internally.

  • It's new in this modern world so, we are not ready to use it now.

  • Scientists have predicted that this can be oxidized by air very easily

  • Till now, scientists aren't able two produce more than one layered graphene.

As we have considered all its advantages and disadvantages, if you ask me how it is at last then I can definitely say that Graphene is our Future.

What's your opinion comment below.

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Hope all this helps you.

HAIL MOTHERLAND


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