davisson-germer experimentdavisson-germer...
TRANSCRIPT
![Page 1: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/1.jpg)
Seoul National University NRL HoloTech
Fig. 5-4, p. 156
Davisson-Germer ExperimentDavisson-Germer Experiment
![Page 2: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/2.jpg)
Seoul National University NRL HoloTech
Fig. 5-5, p. 156
![Page 3: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/3.jpg)
Seoul National University NRL HoloTech
Fig. 5-6, p. 157
![Page 4: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/4.jpg)
Seoul National University NRL HoloTech
Fig. 5-7, p. 157 Fig. 5-8, p. 158
![Page 5: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/5.jpg)
Seoul National University NRL HoloTech
The Nobel Prize in Physics 1986The Nobel Prize in Physics 1986
Ernst Ruska (1906-1988)
“for his fundamental work in electron optics, and for the design of the first electron microscope”
“for their design of the scanning tunneling microscope”
Gerd Binnig(1947-)
Heinrich Rohrer (1933-)
![Page 6: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/6.jpg)
Seoul National University NRL HoloTech
Electron Microscopes – TEM, SEMElectron Microscopes – TEM, SEM
Fig. 5-11, p. 160Fig. 5-10, p. 160
![Page 7: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/7.jpg)
Seoul National University NRL HoloTech
Fig. 5-12, p. 161
![Page 8: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/8.jpg)
Seoul National University NRL HoloTech
Fig. 5-13, p. 162
![Page 9: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/9.jpg)
Seoul National University NRL HoloTech
Fig. 5-15, p. 163
![Page 10: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/10.jpg)
Seoul National University NRL HoloTech
Fig. 5-14, p. 162
![Page 11: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/11.jpg)
Seoul National University NRL HoloTech
Fig. 5-16, p. 163Atomic Force Microscope (AFM) image
![Page 12: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/12.jpg)
Seoul National University NRL HoloTech
Fig. 5-17, p. 164
Wave PacketWave Packet
![Page 13: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/13.jpg)
Seoul National University NRL HoloTech
Fig. 5-18, p. 165
( ) ( )
( ) ( ) ( ) ( )
1 2 1 1 2 2
2 1 2 1 2 1 2 1
cos cos
1 12 cos cos2 2
y y y A k x t A k x t
A k k x t k k x t
ω ω
ω ω ω ω
= + = − + −
⎛ ⎞ ⎛ ⎞⎡ ⎤ ⎡ ⎤= − − − + − +⎜ ⎟ ⎜ ⎟⎣ ⎦ ⎣ ⎦⎝ ⎠ ⎝ ⎠
![Page 14: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/14.jpg)
Seoul National University NRL HoloTech
Fig. 5-19, p. 166
![Page 15: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/15.jpg)
Seoul National University NRL HoloTech
Phase Velocity & Group VelocityPhase Velocity & Group Velocity
0
p
gk
vkdvdk
ω
ω
=
=
![Page 16: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/16.jpg)
Seoul National University NRL HoloTech
Fourier Transform & Inverse FTFourier Transform & Inverse FT
1( ) ( )21( ) ( )2
ikx
ikx
f x a k e dk
a k f x e dx
π
π
∞
−∞
∞ −
−∞
=
=
∫
∫
![Page 17: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/17.jpg)
Seoul National University NRL HoloTech
Fig. 5-21, p. 171
![Page 18: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/18.jpg)
Seoul National University NRL HoloTech
Fig. 5-22, p. 171
![Page 19: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/19.jpg)
Seoul National University NRL HoloTech
Fig. 5-23, p. 172
![Page 20: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/20.jpg)
Seoul National University NRL HoloTech
Fig. 5-24, p. 173
![Page 21: Davisson-Germer ExperimentDavisson-Germer Experimentocw.snu.ac.kr/sites/default/files/NOTE/825.pdf · 2018. 1. 30. · Davisson-Germer ExperimentDavisson-Germer Experiment. Seoul](https://reader033.vdocuments.net/reader033/viewer/2022052503/60b057e46be0c700441bcedb/html5/thumbnails/21.jpg)
Seoul National University NRL HoloTech
Widths in Fourier RepresentationWidths in Fourier Representation
k xtω
Δ Δ
Δ Δ
와 는반비례
와 는반비례
Uncertainty Principle (불확정성의 원리)
Gaussian wave packet:12
x kΔ Δ =
Minimum!