Page 8 - INHA SQUARE 2017
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8 INHA SQUARE
SCIENCE
New Excellent Material: Graphene
Reporter: Seo Yangmyeong
What if the electronics there would be a unique physical instinct in separated
that we commonly use are only one layer of carbon from a single layer of Graphene.
flexible? We will be able However, there was no technology available to separate
to use the display more the layers of graphite.
conveniently, and the In 2004, Andre Geim and his disciples succeeded in
display will have stronger extracting Graphene by taking advantage of tapes and
durability. There is a new won the Nobel Prize. Graphene is very thin and has 200
material that can make times the strength of steel in the same condition. Each
these imagination come carbon atom in the Graphene has one free electron. So,
true. It is a Graphene. Graphene has electrical conductivity. Surprisingly, it is
Graphene is one of 100 times as large as copper.
the carbon rods and can Currently, South Korea has the best grasp of Graphene
easily be found in life. It Development Technology, and the prospects for Graffin
is a pencil. Graphene is Market are very bright, so Graffin can be the future of
layered on top of the floor our industry.
in pencil. A long time ago, many scientists thought that
Nobel Prize in Physics : Gravitational wave
Reporter: Park Minsu
Three scientists who discovered the the gravitational pull of a black hole
existence of the gravitational wave received occurs in space, merging planetary
the Nobel Prize in Physics in 2017. explosions. And Albert Einstein
They discovered the existence of the first predicted a general relativity in 1916.
wave of gravity in February last year at However, when it comes to reaching
Laser Interferometer Gravitational-Wave the Earth, People found that it is
Observatory(LIGO). It is considered one of impossible to ascertain the truth.
the greatest scientific discoveries that play Anyway, they have found a new
the role of understanding the birth of the instrument for understanding the
universe. history of the universe after finding
Gravity is a huge wave of cosmic rays the first time in 40 years.
produced by gravity in the universe when
Plastic on Ice
Reporter: Choi Joongmyung
A tremendous amount of plastic pollutions are found particles, which otherwise would eventually sink to the
in the ocean every year. No one knows definitely what seafloor.
becomes of all that garbage. Much of it most likely Obbard did not start to examine sea ice for plastic.
erodes into microplastic, tiny flecks smaller than five Instead, she was looking for algae in four ice cores
millimeters in diameter, which can become pollutants and collected from remote locations in the Arctic Ocean. When
are often swallowed by marine animals, including fish and she melted and filtered the samples, however, she found
crustaceans. blue, red, green and black bits. Inferring from the samples,
Unexpectedly, trillions of those particles end up in Arctic Obbard and her colleagues estimate that up to seven trillion
sea ice, according to a paper published in May in the pieces of microplastic in total could be released when Arctic
scientific journal Earth's Future. The study found that sea sea ice melts because of climate change. The ocean is
ice contains up to 240 microplastic particles per cubic meter increasingly becoming polluted from old times.
- as much as 2,000 times the density of the particles that
are estimated to float in the Great Pacific Garbage Patch.
"We know that microplastic is found in oceans worldwide,
but it is surprising that it's found in such an abundance in
Arctic sea ice," says Rachel Obbard, a materials scientist
and engineer at Dartmouth College and lead researcher of
the study.
When ice forms at the surface of the ocean, it traps
anything that happens to be floating there. She says the
freezing process seems to be concentrating the trapped
