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WorksheetsOML551 - Introduction to Nanotechnology - IAT1
Total questions: 25
Worksheet time: 3600secs
The term "Nano" comes from the Greek word "nanos," meaning --------
particle
invisible
dwarf
billion
Nanotechnology means ---------
manipulation of matter with an ipod nano
manipulation of matter on an atomic scale
manipulation of matter on an macro scale
manipulation of matter on a huge scale
There’s Plenty of Room at the Bottom was given by physicist ---------- at an American Physical Society meeting on December 29, 1959.
Richard Drexler
Norio Taniguchi
Richard Feynman
Binnig and Rohrer
------- emission for the largest particles, to ------- emission for the smallest clusters.
Red, Green
Green, Blue
Red, Violet
Red, Blue
Which of these historical works of art contain nanotechnology?
Lycurgus cup
Medieval stained glass windows in churches
Damascus steel swords
All of the above
Identify the Zero-Dimensional & One-Dimensional Nanomaterials from the given diagram.
B & C
A & D
B & D
A & C
A solution of gold nanoparticles of around 50 nm appears to be _______
fluorescent because of short wavelength UV photon exchanges between the gold nanoparticles.
metallic gold because the photoelectric effect still holds at the nanoscale level.
transparent because the particles are too small to be seen.
red instead of gold because of surface plasmon resonance effects.
The surface area to volume ratio for nanoparticles is...
much smaller than for larger particles
the same as larger particles
much greater than for larger particles
there is no difference if the particle is the same substance
Which of the following is not an example for nanometre scale?
Red Blood Cell
DNA Molecule
CNT
Virus
Which of the following is not an example of nanoscience in nature?
Hydrophobic surface of a lotus plant
Hydrophylic surface of a pitcher plant
Sticky pads on the bottom of an ant's foot
Gold that can stretch to form flexibile electronics
--------------is the (thermodynamically unfavorable) energy of making "dangling bonds" at the surface.
Surface Defect
Surface to Volume ratio
Surface Area
Surface Energy
Which type of CNT chirality behaves as a metallic conductor?
Zig-zag
Chiral
Arm chair
Left Handed
As an architect, R.B.Fuller popularized the ------------- structure and designed the constructions which exist of
5-corners and 6-corners.
truncated octahedron
Geodesic Dome
Cubical Shaped
Double helical
A type of fullerene doped with alkali metals shows a range of electrical conductivity
Na3C60
K6C60
K3C60
Li3C60
Conversion of Au3+ or Ag+ ions to Metallic form of Au0 or Ag0 is possible using suitable -------
Oxidising agents
Reducing agents
Stabilizing agents
Capping agents
In the total covalent bonds present in C-60 fullerene, how many single bonds and double bonds.
45 single bonds and 35 double bonds.
60 single bonds and 30 double bonds.
70 single bonds and 40 double bonds.
40 single bonds and 80 double bonds.
Reason out the bio-inspired technique you learned from Lotus Leaf. (Select all that apply).
Ultra-hydrophobicity
Surface defects
High water contact angle >150°
Low contact angle hysteresis <5°
Fraction of surface atoms
Properties of materials can be different at nanoscale. Reason out. (Select all that apply).
No confinements for electrons
Larger surface area
Reduced imperfections
Low surface energy
Quantum confinement effect
Predict the effect of decrease in size on colour, band gap, wavelength and peak shift in NPs. (Select all that apply).
Band gap increases
Band gap decreases
Absorption wavelength decreases
Peaks will be red shifted
Peaks will be blue shifted
Distinguish Graphene, CNT and Fullerene from Graphite. (Select all that apply).
Graphene is a single layer of graphite
Fullerene and Carbon belongs to 1D nanomaterial
Rolled Graphene sheets are CNT
Spherically rolled graphene sheets are fullerenes
Graphite and Graphene are same dimensional
Comment on functionalization and 5-7-7-5 defect in CNT. (Select all that apply).
Adding new functions, features, or properties to a material
Can be done by sol-gel synthesis
Can be carried out with HCl / HNO3 (2 : 1 ratio)
5-7-7-5 defect is a topological defect
Pentagons and heptagons formation causes decrease in stiffness
In how many dimensions are quantum dot excitons confined (restricted to move)?
0D
1D
2D
3D
Visualization of nanoscale objects are possible using --------
Optical microscope
Electron microscope
Spectrometer
Telescope
Grain boundary is a type of --------- defect.
point defect
line defect
interface defect
volume defect
------------ is the maximum stress (that you can give) before permanent strain occurs in the material.
Yield strength
Ductility
Toughness
Passivity
