Thermoelectric Properties of Nanowires and Nanotubes
Used for Energy Conversion
Chris Dames, Mechanical Engineering, UC Riverside
STM
re
STM
Hot
Wire
Carbon
nanotube
Hot
Wire
STM
xyz
Metal
Bond
ST
M
CNT
wi
no
Na
Hot
Wire
50 nm
TEM
Electrical Resistance
Baseline
30
20
with ZnO
nanobelts
10
0
0
10
20
Power [µW]
30
40
Seebeck
300
CNT
20
0
Annealing
contacts
-20
-40
-60
Voltage [µV]
60
Current [µA]
Temperature Rise [K]
Thermal Resistance
200
0
-100
-1
-0.5
0
0.5
Voltage [V]
1
∆V / ∆T =
39.3 µV/K
100
0
5
Time [s]
10
A Modified TEM for Thermoelectric Properties Measurements of
Nanowires and Nanotubes
C. Dames, S. Chen, C. T. Harris, J. Huang, Z. F. Ren, M. Dresselhaus, and G. Chen (MIT & BC)
STM
Carbon
nanotube
re
STM
Hot
Wire
Hot
Wire
Metal
Bond
STM
xyz
ST
M
CNT
wi
no
Na
Hot
Wire
50 nm
TEM
Electrical Resistance
Baseline
30
20
with ZnO
nanobelts
10
0
0
10
20
Power [µW]
30
40
Seebeck
300
CNT
20
0
Annealing
contacts
-20
-40
-60
Voltage [µV]
60
Current [µA]
Temperature Rise [K]
Thermal Resistance
200
0
-100
-1
-0.5
0
0.5
Voltage [V]
1
∆V / ∆T =
39.3 µV/K
100
0
5
Time [s]
10