Базовый курс elementary (A2) часть 2 Методические указания для студентов первого курса всех технических специальностей Новосибирск

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Название	Базовый курс elementary (A2) часть 2 Методические указания для студентов первого курса всех технических специальностей Новосибирск
страница	10/17
Тип	Методические указания

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7.1 What is nanotechnology? Try to guess from the meaning of the parts of the word.

centi means ‘one hundredth’, so 1 centimeter equals one hundredth of a meter. Match these prefixes and their meanings to learn what the prefix nano means.

giga
kilo
mega
micro
milli
nano

one thousand
one million
one billion
one billionth
one millionth
one thousandth

7.2 Read the words and try to guess what they mean.

diameter [daı´æmıtә]	product [´prãdškt]
atom [´ætәm]	catalytic [‚kætә´lıtık]
molecule [´mãlı‚kju:l]	cosmetics [kãz´metıks]
protein [´prә\|ti:n]	radiation [‚reıdi´eı∫n]
virus [´vaırәs]	athlete [´æθli:t]
nature [´neıt∫ә]	technologist [tek´nãlәdžıst]

7.3 Read the text and complete the sentences with the fragments (a–f) from the list.

at which special properties have been observed in materials – properties that are profoundly different at the nanoscale.
the basic building block of matter.
the basic units of life.
the smallest part of a chemical compound.
they have only scratched the surface of nanotechnology’s potential.
which is about 50,000 times smaller than the diameter of a human hair.

Nanotechnology is the creation and use of materials or devices at extremely small scales. These materials or devices fall in the range of 1 to 100 nanometers (nm). One nm is equal to one-billionth of a meter (.000000001 m), (1) _____ Scientists refer to the dimensional range of 1 to 100 nm as the nanoscale, and materials at this scale are called nanocrystals or nanomaterials.

To grasp the size of the nanoscale, consider the diameter of an atom, (2) _____ The hydrogen atom, one of the smallest naturally occurring atoms, is only 0.1 nm in diameter. In fact, nearly all atoms are roughly 0.1 nm in size, too small to be seen by human eyes. Atoms bond together to form molecules, (3) _____ Molecules that consist of about 30 atoms are only about 1 nm in diameter. Molecules, in turn, compose cells, (4) _____ Human cells range from 5,000 to 200,000 nm in size, which means that they are larger than the nanoscale. However, the proteins that carry out the internal operations of the cell are just 3 to 20 nm in size and so have nanoscale dimensions. Viruses that attack human cells are about 10 to 200 nm, and the molecules in drugs used to fight viruses are less than 5 nm in size.

The possibility of building new materials and devices that operate at the same scale as the basic functions of nature explains why so much attention is being devoted to the world below 100 nm. But 100 nm is not some arbitrary dividing line. This is the length (5) _____

A number of important breakthroughs have already occurred in nanotechnology. These developments are found in products used throughout the world. Some examples are catalytic converters in automobiles that help remove air pollutants, devices in computers that read from and write to the hard disk, certain sunscreens and cosmetics that transparently block harmful radiation from the Sun, and special coatings for sports clothes and gear that help improve the gear and possibly enhance the athlete’s performance. Still, many scientists, engineers, and technologists believe (6) _____
7.4 Mark the following statements T (True), F (False) or N (Not mentioned).

A nanometer is the smallest thing occurring in nature.
Molecules are the basic units of life.
Viruses have nanoscale dimensions.
Nanoscale gets so much attention because this is where many of the mechanisms of the biological and physical world operate.
At scales above 100 nm gold looks yellow, but at scales below 100 nm it has other colors.
The developments of nanotechnology are already used in different products.
Smaller and faster chips will make computers smaller and enable them to perform many more functions more quickly.
Scientists, engineers and technologists are sure they know everything about nanotechnology.

7.5 Put the following things in the order of their size, from the smallest to the biggest one:

virus nanometer molecule human hair human cell atom
7.6 Match the words and their meaning.

arbitrary
enhance
extremely
occur
refer to
roughly
scale
throughout

happen or exist
improve
in every part of
not exactly
size or level
speak about
very
without any reason or plan

7.7 Fill in the gaps with the words from 7.6 in the appropriate form.

Nanotechnology is the science of building _____ small things.
In the future, we'll be able to work on nano_____ and build things atom by atom.
A nanometer is _____ ten times the size of an individual atom.
Nanotechnology will help _____ computer performance greatly.
The manipulation of atoms or small groups of atoms to manufacture materials and devices _____ as bottom-up approach in nanotechnology.
Nanoscale was not chosen _____ly. It is where the properties of materials are profoundly different from the properties of materials _____ in nature.

7.8 Translate into English.

1. Нанотехнология – это создание функциональных материалов, устройств и систем при работе с веществом в масштабе от 1 до 100 нанометров.

2. Ученые ожидают, что на наноуровне будут открыты новые явления, которые будут использоваться в передовых технологиях.

3. Люди уже знали об особых свойствах, проявляемых материалами на наноуровне, хотя они и не понимали, почему это происходит.

4. Добавив мельчайшие частицы золота в стекло, можно получить цвет от желтого до зеленого и красного в зависимости от размера этих частиц.

5. Структурируя вещество на наноуровне, можно влиять на основные свойства материалов, не изменяя их химический состав.

6. Полупроводниковые нанопровода – это одномерные структуры с уникальными электрическими и оптическими свойствами, используемые в качестве элементов наноустройств.
7.9 Match the words and their meaning.

in a nutshell
to take sth for granted
to arrange
randomly

amazing
incredible

without any definite plan, aim, or pattern
in a short, clear way
surprising or difficult to believe
to expect sth to be always there never thinking how important or useful it is
to put a group of things in a particular order or position
very pleasant in an unexpected way

7.10 Listen to Marshall Brain, founder of HowStuffWorks, a resource Web site explaining how the world around us works, talking about nanotechnology and choose the correct ending for the sentences below.

1. Diamond, graphite and soot have different properties because

they consist of different atoms.
the same atoms in them are arranged in different ways.
different methods are used to obtain them.
nanotechnology is used to make them different.

2. Nanotubes will make it possible to create a space elevator because

they are very strong and light.
they can be shaped into a ribbon up and down which the space elevator will run.
they can withstand the conditions of the open space.
they are obtained using nanotechnology.

3. Batteries with nanogranules work better because

everything made using nanotechnology works better.
nanogranules can change their properties when the battery is recharged.
nanogranules last longer.
nanoparticles have large surface area.

4. The nanotechnology methods used to obtain new materials involve

moulding plastic materials into nanoparticles.
cutting big pieces of materials into smaller particles.
assembling the new material atom by atom.
using cultured cells to produce the necessary compounds.

7.11 Listen again and fill in the gaps in this summary of the text about nanotechnology.

Nanotechnology has the potential to change the world in many (1) _____ ways. It will improve many of the products that we use every day and make many new products possible.

Nanotechnology is the science of very small things, usually smaller than a hundred nanometers. A hundred nanometers is equivalent to about (2) _____ across or less. At this scale things that we (3) _____ can behave in very different ways.

One of the (4) _____ of nanotechnology can be seen in batteries. By making the granules inside the battery on a nanometer scale it’s possible to recharge the battery (5) _____, and the battery’ll (6) _____ longer.

Some of the more exotic ideas in nanotechnology involve new assembly methods. Scientists are experimenting with new nanomaterials that can grow or (7) _____ themselves. (8) _____ are already able to do this. The goal is to find ways for human beings to this as well.
7.12 Think of everyday products such as cars, computers, clothes. How can nanotechnology change them? Discuss your ideas with a partner.

7.13 Complete these predictions about nanotechnology. Use each verb in the list once.

~~construct~~ remove store wear replace resist

take send clean up perform stop

CARS Manufacturers will be able to construct cars from lightweight materials that are 50 times stronger than steel. Today's two-tonne Cadillac could weigh only 50 kg in the future. The materials used to build cars will be able to (1) _____ scratches, dents, and rust.

COMPUTERS We’ll be able to (2) _____ trillions of bytes of information in a structure the size of a sugar cube.

MEDICINE Doctors will be able to (3) _____broken human bones with artificial bones made with nanotechnology. Nanorobots will be able to (4) ______ surgery. We'll be able to (5) ______ pills containing nanorobots.

THE ENVIRONMENT We'll be able to (6) _____ nanorobots up into space to rebuild the ozone layer. Other nanorobots will be able to (7) _____ pollutants from water and (8) _____ oil spills.

CLOTHES Everyone will be able to (9) _____ computers and colour screens because they will be built into their clothes. We'll be able to (10) _____ our clothes from getting dirty by making them with stain repellent fabrics.
7.14 What might be the impact of nanotechnology? Think of the benefits and threats it can bring to people. Discuss your ideas with a partner.
The Complex Object

Verb	Complex Object	Translation
mental activity: to know, to think, to consider, to find, to expect, to suppose wish, likes and dislikes: to want, to like, to hate order and permission: to order, to ask (for), to offer, to tell, to allow, to enable, to encourage, to forbid NB: to let, to make sense perception: to see, to hear, to watch, to observe	We know engineers to use to be using to have used nanocrystals in order to make the engine parts more durable. We know nanocrystals to be used to have been used in order to make the engine parts more durable. The developers of the engine would like the engineers to use nanocrystals in order to make the engine parts more durable. The developers of the engine would like nanocrystals to be used in order to make the engine parts more durable. The developers of the engine asked the engineers to use nanocrystals in order to make the engine parts more durable. The developers of the engine asked for nanocrystals to be used in order to make the engine parts more durable. The researchers made the metal particles form into nanocrystals. The researchers saw the metal particles form into nanocrystals. forming into nanocrystals. The researchers saw the nanocrystals formed.	… что инженеры используют … … использовали … … что нанокристаллы используются … использовались … … чтобы инженеры использовали … … чтобы нанокристаллы использовались … … инженеров использовать … чтобы нанокристаллы были использованы … … чтобы частицы металла сформировали … … что частицы металла формируют … … как частицы металла формируют … … как формируются нанокристаллы

7.15 Fill in the blanks with the particle ‘to’ where necessary.

Using this electronic microscope we can see carbon atoms _____ roll into nanotubes.
The researchers wanted the nanomaterial _____ assemble itself but they couldn’t make it _____ do that.
Engineers found nanogranules _____ be extremely efficient in batteries.
The students asked the lecturer _____ explain the mechanisms of using nanotechnology for drug delivery.
Visit http://www.news.cornell.edu/releases/Nov03/NEMSguitar.ws.html, and you’ll hear a nanoguitar _____ sound.

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