INTD 290 Nanotechnology and Society
Homework 2
1-Who was the person who did talk about the manipulation of small objects in the
nanometer scale 47 years ago long before the word “nano” was even in the horizon?
(a) R. Buckminster Fuller
(b) Albert Einstein
(c) Richard P. Feynman
(d) Enrico Fermi
Answer c
2- Nanotechnology is the manipulation of the objects at the
(a) Microscopic Scale
(b) Mesoscopic Scale
(c) Macroscopic Scale
(d) Megascopic Scale
Answer b
3- According to what you read in Understanding Nanotechnology, which one of the
following is not a property observed in the meso-world?
(a) Quantization of electrical conductance
(b) Limitation of heat conductance
(c) Coulomb Blockade
(d) Anything goes in that scale
Answer d
4- What is the surface-to-volume ratio of a small cube if each of its three sides are
ten molecules across? The cube is packed with identical molecules. One molecule
has a size of 1 nm.
Surface/Volume = 6*(10*10)/(10*10*10) = 0.6 = % 60
5- Single-walled carbon nanotubes (SWNT) have better electrical conductance than
multi-walled carbon nanotubes (MWNT)
(a) False
(b) True
Answer b
6- Multi-walled carbon nanotubes (MWNT) have higher tensile strength than single-
walled carbon nanotubes (SWNT)
(a) True
(b) False
Answer a
