Download presentation
Presentation is loading. Please wait.
Published byErick Webster Modified over 9 years ago
1
…a Dimensional Restriction Primer
2
The Nanoscale 10 -10 m = 1 Ångstrom 10 -9 m = 1 nanometer 1 billion nanometers in 1 meter 1 billion meters circle globe 77x 10 -6 m = 1 micrometer 10 -3 m = 1 millimeter
3
Naturally Nano Human Rhinovirus 32 nm diameter 10 nm TEM Image
4
Especially Nano DNA Double Helix 2 nm diameter 1 nm
5
Hypo Nano Metallic Casting 1 nm defects 1 nm TEM Image
6
Vital Nanostructures Natural termination of growth at nanometer dimensions? Viruses Single cellular units Passivating surfaces Encapsulated molecular clusters Embedded crystallites Aerosol particulates
7
Unnatural Nanostructures Nanostructures at risk Unsatisfied bonds High surface-to-volume ratio High driving force for coarsening
8
Why Nano? Spatial Conservation Smaller, faster, lighter Functional localization Dimensional Restriction Novel intrinsic properties Novel fabrication methodologies
9
NanoCircuits Silicon Oxide Metal Reducing spatial constraints 1 nm TEM Images
10
NanoFilms 10 nm 32 nm >5 m Co 72 Cr 18 Pt 10 Ni 77 P 23 Al-Mg platen Cr 83 Ta 17 Magnetic media
11
NanoMedia Piercing the superparamagnetic limit Present: 35 Gbits/in 2 Next: 50 Gbits/in 2 10 nm MFM Image
12
Novel NanoProperties Achieving quantum confinement Quantum wells Quantum wires Quantum dots n(E) E E E E 3-D2-D1-D0-D
13
Bandgap engineering Sharply-defined energy levels Energy gap “tuned” by confinement Nudging NanoProperties E (k) k k
14
NanoSynthesis Challenge: dimensional restriction Approach: “top down” Selective removal of material Approach: “bottom up” Selective addition of material 30 nm Gold Nanoparticle TEM Image
15
Nano Machining Professor Kris Pister Micro Robot Arm Nano Assembler 10 6 nm SEM Image
16
Nano Illumination Steerable Laser Nano Optics Professor Connie Chang-Hasnain 100 m = 10 5 nm SEM Image
17
Nano Fenestration 100 m = 10 5 nm SEM Image Professors Luke Lee, Al Pisano Confocal Microscope on a Chip In-Vivo Biological Imaging
18
Nano Casting SEM image 40nm Metal Nanowires Ceramic Crucibles TEM image Professors Ron Gronsky, Angy Stacy
19
Nano Analysis Electron Energy Loss Spectrometry 4 nm focused electron probe Bi Al 2 O 3 EFTEM Images 0510152025303540 Intensity Energy loss (eV) 10nm Professor Ron Gronsky
20
Nano Electroforming 50 nm TEM image Professors Ron Gronsky, Tim Sands, Angy Stacy CoSb 3 Nanowires / Pt Electrode Thermoelectrics
21
Nano Deposition Si-Ge Quantum Dots Stranski-Krastanov Conditions Strain-Induced 3-D Islands Professors Connie Chang-Hasnain, Oscar Dubon, Tim Sands 50 nm TEM Image 50 nm AFM Image
22
Nano Templating Professors Paul Alivasatos, Peidong Yang DNA Fragment / Nanoclusters Catalysis / Nanowires TEM Image
23
Nano Bearings Professor Alex Zettl 40 nm TEM Image Concentric Nanotubes “Non-contact” TEM Image 20 nm TEM Image
24
SEM Images 100 m = 10 5 nm Nano Furnace RT Thermal Conductivity of Nanotube 3000 W/ m-K ≈ 2x diamond Professor Arun Majumdar
25
Nano Assay PSA detection 4 ng/ml required 0.2 ng/ml possible
26
Nanotrends Nano Not MEMS enabling nanotechnology Sensing, tooling, nanobots Scaling methodologies New synthetic protocols Directed assembly Thermal, mechanical, chemical, biological Hyperdisciplinary collaboration Physics, Chemistry, Biology, Engineering Industry, National Labs, Academia
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.