課程名稱︰Nanomaterials
課程性質︰選修
課程教師︰林唯芳
開課系所︰材料所
考試時間︰94.11.9 14:20~5:20
試題 :
1.Use the following data of elements to calculate the number
of atoms and number of surface atoms of 5nm of Al,Au and Bi
nanoparticles (15 pts)
┌───────┬───┬───┬───┐
│property │Al │Au │Bi │
├───────┼───┼───┼───┤
│Radius(A) │1.18 │1.34 │1.46 │
├───────┼───┼───┼───┤
│density(g/cm3)│2.7 │19.3 │9.8 │
├───────┼───┼───┼───┤
│M.W │26.98 │196.97│208.98│
└───────┴───┴───┴───┘
2.When the size of materials is reduced to certain range
the discrete energy levels observed as follows, why? (20 pts)
(圖略) 3D,2D,1D,0D
3. Why ionization potential increases and shown odd/even
effects as size of Li clusters decreases.Compare melting
condition between 200nm Li and 20nm Li clusters. (20 pts)
4. Pick up two instruments to determine thickness of each layer
in TiO2/polystyrene and CdTe/CdSe, respectively.
(core)/(shell) (20 pts)
5. How -(A)n/2-(B)m-(A)n/2 triblock polymers differentiate from
-(A)n-(B)m- diblock polymers ? (5 pts)
6. Why the emission color of polythiophene at room temperature
is red, but in 65c is yellow? Compare it's optical properties
from the point of view of the compositon and the comformation
differences. (20 pts)
(圖略) (main chain and side chain)
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※ 編輯: tagheuer 來自: 140.112.182.165 (11/10 09:45)