1. Making sure you understand the material !!!

2. Possible Solution: Wikipedia….

3. ECE 4140/6140 (# will be updated)
Fundamentals of Nanoelectronics

4. Fundamentals of Nanoelectronics

5. Fundamentals of Nanoelectronics
ECE 4140/6140
Fundamentals of Nanoelectronics
No background except basic Electromagnetics,
Matlab/Mathematica and Calculus
Open to students from any scientific discipline,
UGs and Grads
Covers a ‘bottom-up’ view of current flow
(Start: Current through a Hydrogen atom)
Goes on to Molecule  Solid  Heterostructure  Modern day Transistor

6. Quantum theory of solids

7. Science at the end of ~1900: Classical Mechanics

8. Leading to Mech. Engg., Civil Engg., Chem. Engg.

9. Science at the end of ~1900: Electromagnetics
Rainbows
Polaroids
Lightning
Northern
Lights
Telescope
Laser
Optics

10. Science at the end of ~1900: Electromagnetics
Electronic Gadgets

11. Science at the end of ~1900: Electromagnetics
Chemical Reactions
Neural Impulses
Ion Channels
Biological Processes
Chemistry and Biology

12. But there were puzzles !!! What does an atom look like ???
Dalton (1808)
What does an atom look like ???

13. Solar system model of atom
Continuous radiation from orbiting electron
mv2/r = Zq2/4pe0r2
Centripetal
force
Electrostatic
force
Pb1: Atom would
be unstable!
(expect nanoseconds
observe billion years!)
Pb2: Spectra of
atoms are discrete!
Spectrum of Helium
Transitions E0(1/n2 – 1/m2) (n,m: integers)

14. Future of Electronics? Avik Ghosh Electrical & Computer Engineering
UVA 14

15. How far can we scale transistors?
New physics emerges
at these lengthscales 15

16. From Ralph Cavin, NSF-Grantees’ Meeting, Dec 3 200816

17. 17

18. 18

19. New Physics of Computation (Beyond Moore, >15 yrs)
Possible Ways forward
Better Materials
(More Moore, ~7-15 yrs)
> 15 nm
Strained Si/SiGe
~ 10 nm, CNT
(ckts challenging)
~ 5 nm, SiNW
(Low mobility)
~2 nm, Org. Molecules
(Reproducibility, Gating)
New Physics of Computation
(Beyond Moore, >15 yrs)
Reversible Computing
Neuromorphic Computing
Non-equilibrium Switching
Multiple gates
Better architecture
(Moore’s Law, ~5-7 yrs) 19

20. 20

21. Where do we stand today?

22. “Top Down” … (ECE6163) Molecular Electronics Solid State Electronics/
Mesoscopic Physics
Molecular Electronics Vd
20 µm Vd
2 nm

23. “Al-Khazneh”, Petra, Jordan
Top Down fabrication
Photolithography
Top down architecture
“Al-Khazneh”, Petra, Jordan
(6th century BC)

24. Modeling device electronics
Bulk Solid (“macro”)
(Classical
Drift-Diffusion)
~ 1023 atoms
Bottom Gate
Source
Channel
Drain
ECE 6163
(“Traditional Engg”)
Clusters (“meso”)
(Semiclassical
Boltzmann
Transport)
80s ~ 106 atoms
Molecules (“nano”)
(Quantum
Transport)
Today ~ atoms
ECE 4140
(“Nano Engg”)

25. “Bottom Up” ... (ECE 4140) Molecular Electronics
Solid State Electronics/
Mesoscopic Physics
Molecular Electronics Vd
20 µm Vd
2 nm

26. Bottom Up fabrication Build pyramidal quantum dots from InAs atoms
Bottom up architecture
Chepren Pyramid, Giza (2530 BC)
Build pyramidal quantum dots from InAs atoms
(Gerhard Klimeck, Purdue)
ECE 4140/6140 (Spring)
Full quantum theory of nanodevices
Carbon nanotubes, Graphene
Atomic wires, nanowires,
Point contacts, quantum dots,
thermoelectrics,
molecular electronics
Single electron Transistors (SETs)
Spintronics

27. Related Courses Advanced Devices Fundamentals Circuits/Architecture
ECE 303 (Solid State Devices)
ECE 763 (Advanced Solid State)
ECE 587/687 (Nanoelectronics)
ECE 686 (NanoPhotonics)
ECE 642 (Optoelectronics)
MSE 455 (NanoSc. and Tech.)
MSE 627 (Atomistic Simulations)
Fundamentals
ECE309 (EM)
PHYS 355/751 (Quantum Phys)
MSE 601 (Xal str of mats)
ECE 686 (QM for engineers)
MAE 692 (Q. Engg: At/Mol)
Circuits/Architecture
ECE 632 (VLSI design)
ECE 564 (IC-Fab)
ECE 363 (Digital ICs)

28. May the qE + q(vxB) be with you !