Foresight 2011 - Beyond Silicon
<p>Jun 27, 2011 05:30 PM
 
somebody's notes (not mine)  of Tom Theis's great (but brief) talk at FS/Google.
He should have been given 1-2 hours!!!
 
Advanced nanoscale analytical instruments (pushing the state of the art)
In-situ UHV transmission electron microscopy and liquid cell TEM
IBM low energy electron microscope II
Medium Energy Ion Scattering (0.3 nanometer resolution non destructive elemental depth profiling)
Scanning probe microscopy (AFM, STM, Scanning Kelvin, Electrostatic Magnetic, etc…)
Nanoscale MRI
UHV-TEM,
PEEM/LEEM/LEED
MEIS
STM.AFM
Nano-MRI
<b>DIRECT IMAGING of Molecular Structur</b>e
<b>Pentacene model</b>
Unique AFM imaged the bonds
Including the hydrogen bonds (<b>25 picometer resolution</b>)
Imaged a metabolite from bacteria in mariana trench
Structured an unknown molecule with direct imaging first
Nanoscale 3D patterning
Make 3d sculpture of a world map 40nm, 143 second writing time
256 vertical levels, 100,000 pixels
Looking for business partners
<b>Smarter Planet</b>
Worlds highest efficiency earth abundant chalcogenide thin film solar cells (CuZnSnSSe)
Conversion efficiency 9.6%
Partner with two major PV companies
T.K. Todorov et al Advance material 22, E156
Partnership model
Roche and IBM Collaborate to develop Nanopore Based DNA Sequencing Technology
Designing an antimicrobial polymeric Nanostructure
New molecular structures could fight infectious diseases better than conventional antibiotics (95,000 people in the US get sick from drug resistant bacteria)
Nederberg (Nature Chemistry, 2011)
Environmental Wireless sensors at the cloisters
Smart dust
Low power mote technology
Senses temperature, humidity, corrosion, contamination, light levels, air flow, pressure
Self configuring mesh network
FET CMOS cannot get it to smart dust
Silicon NANOPHOTONICS
Shrink everything to onchip photonics
Leaders invest in science and then aggressively transition to engineering
Followers invest at engineering
Recent achievements integrated devices
- Ultracompact WDM multiplexers, Optics Express May 2007
- Ultracompact 10 Gbps modulator Dec 2007
- High throughput nanophotonics switch April 2008, 40 Gbps error free
- Ge waveguide avalanche photodetector Nature March 2010, 40 Gbps at 1V, 8fF capacitance
Breakthrough integrated photonics and electronics for exascale computing
In product in a few more years
Phase Change Memory (PCM)
Amorphous Phase – low reflectance, high resistance (cool fast)
Polycrystalline phase – high reflectance, low resistance (50ns, cool slower, more organized)
Need a new device to replace flash memory
Billions of cycles for the memory
Demo of scalability – 3 nm, 20nm, 100 nm active volume demo, active region cube a few cubic nanometers
Developing new logic devices, new phase change memory and new silicon photonics for exaflop and zettaflop computers
Carbon electronics for ultra-narrow or ultra thin gates
Carbon nanotubes – need place with nanometer position (unsolved problem) to beat silicon. Extraordinary dc device characteristics hold promise for ultra narrow channel FETS
Graphene
Extraordinary carrier mobilities in suspended sheets hold promise for ultra thin channel FETS
Limited success in opening a useful bandgap for digital electronics (wants to be a semi-metal)
Shrinking carbon nanotube transistors
Channel scaled to 15nm (more current and more speed)
Contact length scaled to 20nm (the contact slows down the speed)
Aaron Franklin working the problem
Graphene RF Transistors on 2 inch SiC wafer
Graphene formation on Si-face of SiC
Can watch the graphene grow layer by later
155 Ghz device but does not beat the best silicon
Clockspeed will not speed up until we replace the FET (field effect transistors)
Low voltage switch concepts
New materials for memory
Nanoplasmonics beyond silicon nanophotonics
Quantum computing
Neuromorphic
New materials, energy storage and conversion, medicine and health care
Functionalize tungsten tips with Carbon monoxide to get the best resolution
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