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Making sure you understand the material !!!

Making sure you understand the material !!!. Possible Solution: Wikipedia…. ECE 4140/6140 (# will be updated) Fundamentals of Nanoelectronics. Fundamentals of Nanoelectronics. ECE 4140/6140 Fundamentals of Nanoelectronics. No background except basic Electromagnetics,

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Making sure you understand the material !!!

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  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. 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 Ion Channels Chemical Reactions Neural Impulses Biological Processes Chemistry and Biology

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

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

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

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

  16. From Ralph Cavin, NSF-Grantees’ Meeting, Dec 3 2008

  17. > 15 nm Strained Si/SiGe ~ 10 nm, CNT (ckts challenging) Reversible Computing Neuromorphic Computing Non-equilibrium Switching ~ 5 nm, SiNW (Low mobility) ~2 nm, Org.Molecules (Reproducibility, Gating) Better Materials (More Moore, ~7-15 yrs) New Physics of Computation (Beyond Moore, >15 yrs) Possible Ways forward Multiple gates Better architecture (Moore’s Law, ~5-7 yrs)

  18. Where do we stand today?

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

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

  21. Bulk Solid (“macro”) (Classical Drift-Diffusion) Drain ~ 1023 atoms 80s ~ 106 atoms Clusters (“meso”) (Semiclassical Boltzmann Transport) Source Channel Bottom Gate Today ~ 10-100 atoms Molecules (“nano”) (Quantum Transport) Modeling device electronics ECE 6163 (“Traditional Engg”) ECE 4140 (“Nano Engg”)

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

  23. Bottom up architecture Chepren Pyramid, Giza (2530 BC) • 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 Build pyramidal quantum dots from InAs atoms (Gerhard Klimeck, Purdue) Bottom Up fabrication

  24. Related Courses Advanced Devices 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)

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

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