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The Uses of Nanosensors: From Smart Dust to Nano

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Jack Ealy Workshop La Jolla, CA July 2006 Professor Michael J. Sailor UC San Diego Dept. of Chemistry and Biochemistry msailor_at_ucsd.edu http://chem-faculty.ucsd.edu ... – PowerPoint PPT presentation

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Title: The Uses of Nanosensors: From Smart Dust to Nano


1
The Uses of Nanosensors From Smart Dust to Nano
Mother Ships Jack Ealy Workshop La Jolla, CA
July 2006
Professor Michael J. Sailor UC San Diego Dept. of
Chemistry and Biochemistry msailor_at_ucsd.edu http
//chem-faculty.ucsd.edu/sailor/
2
Death on the Danube
The Economist, 2/15/00
3
Environmental sampling
Lab
Field
4
Smart Dust Kris Pister, UCB (1996)
  • Need
  • sensors
  • power sources
  • Available
  • wireless radios
  • data processing
  • networking protocols

5
Smart Dust Kris Pister, UCB (1996)
  • Need
  • sensors
  • power sources

6
Silicon vapor sensors
7
Making a silicon nanostructure
20 mm
Electrochemical machining of nanopores
8
Silicon nanostructures mimic the beetle shell
Chitin multilayer
9
Silicon nanostructures mimic the beetle shell
Silicon multilayer
10
Silicon Microsensors
11
(No Transcript)
12
William R. Freeman, M.D. and Lingyun Cheng,
M.D. Jacobs Retina Center UCSD
13
Mother-Ships for Nanotherapies
Porous silicon micro-particle in the eye
color changes when particle releases drug
14
Targeted Nanomachines
UCSD Moores Cancer Center NIH nanoTUMOR
center Erkki Ruoslahti, Burnham Inst. Sangeeta
Bhatia, MIT Michael Sailor, UCSD
Ruoslahti, Cancer Cell, 2002
15
(No Transcript)
16
Backup slides
17
Hazards of nanotechnology
Asbestos fibers (Nikon, inc)
University of Wisconsin, Madison Asbestos
Management Program Heating/Chilling Plant
Furnace/Boiler Abatement (December 1997-January
1998)
  • As with any new technology, reasonable concerns
    about potential hazards are appropriate.

18
Hazards of nanotechnology
Shvedova, A. A. et al. Exposure to carbon
nanotube material assessment of nanotube
cytotoxicity using human keratinocyte cells. J.
Toxicol. Environ. Health A 66, 1909-1926
(2003). Derfus, A., Chan, W. Bhatia, S. N.
Probing the Cytotoxicity of Semiconductor Quantum
Dots. Nano Lett. (2004).
5 nm CdSe (A. Paul Alivisatos, UC Berkeley)
19
Making a silicon nanostructure
20 mm
20
Encoded particles self-assemble
21
Magnetic manipulation of microparticles
Nature Mater. 2004, 3, 896-899.
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