NanoMaterials

Question 1

_________ is science,
engineering, and technology conducted
at the nanoscale, which is about 1 to
100 nanometers.

_________ are nano-scale
particles, tubes, rods, or fibres, used in
healthcare, electronics, cosmetics,
textiles, information technology and
environmental protection

Answer 1

Nanotechnology

Nanomaterials

Question 2

HOW TO MANUFACTURE MATERIALS
1. ________ - reduces large pieces of materials all the way down to the nanoscale, like someone carving
a model airplane out of a block of wood. This approach requires larger amounts of materials and can
lead to waste if excess material is discarded.
1. __________ - creates products by building them up from atomic- and molecular-scale components,
which can be time-consuming.

Answer 2

Top-down
Bottom-up

Question 3

HOW TO MANUFACTURE MATERIALS: NEW PROCESSES

 ___________ - a process in which chemicals react to produce very pure, high-
performance films
 ___________ - one method for depositing highly controlled thin films
 __________ - a process for depositing one-atom-thick layers on a surface
 ______________ - a process in which the tip of an atomic force microscope is “dipped” into a chemical fluid and then used to “write” on a surface, like an old fashioned ink pen onto
paper
 _____________ - a process for creating nanoscale features by “stamping” or
“printing” them onto a surface
 __________ - a high-volume process to produce nanoscale devices on a roll of
ultrathin plastic or metal
 ___________ - describes the process in which a group of components come together to form
an ordered structure without outside direction

Answer 3

Chemical vapor deposition
Molecular beam epitaxy
Atomic layer epitaxy
Dip pen lithography
Nanoimprint lithography
Roll-to-roll processing
Self-assembly

Question 4

Formation of the Atmosphere
1. __________
 4.5 Million years ago, the atmosphere was composed of Hydrogen, Helium, Ammonia and Methane,
similar to the atmosphere of Saturn and Jupiter today

2. ___________
    Volcanic activity from the Earth’s solid crust released gases such as water vapor, carbon dioxide
   and ammonia, similar to the atmosphere of Mars and Venus today
    As the Earth grew cooler, water vapor formed into clouds creating rain, which resulted to
   formation of the ______
    _______ was formed from the breakdown of ammonia due to sunlight
    Other gases formed were hydrogen, methane, and carbon monoxide in trace amounts, with
   hydrogen sulfide (H2S), sulfur dioxide (SO2), and chlorine

Answer 4

Primitive Atmosphere

Secondary Atmosphere

ocean

Nitrogen