1. SMART DUST - the Power of Pc in a Speck of Dust

2. TOPICS COVERED: ABOUT SMART DUST GOALS CONSTRUCTION OPERATION OF MOTE APPLICATIONS ON THE DARKER SIDE BIBLIOGRAPHY

3. ABOUT SMART DUST: Father of smart dust: Kris Pister Based on MEMS:  Micro-Electro-Mechanical System

4. GOALS: To build a self-contained, millimeter-scale sensing and communication platform for a massively distributed sensor network. Will contain sensors, computational ability, bi-directional wireless communications, and a power supply, while being inexpensive enough to deploy by the hundreds.

5. CONSTRUCTION: Porous silicon chip One side: etched to make hydrophobic Other side: hydrophilic Break chip using vibrations like ultrasound

6. Construction contd. When added to water, dust aligns with –phylic side When oil droplets enter the pores of -phobic side, color changes Degree of color change depends on identity of insoluble substance

7. S-dust around hydrophobic liquid in water

8. OPERATION OF MOTE: Run by microcontroller Determines tasks of mote Controls power to conserve energy Volume: key constraint  Batteries / Solar cells Gets reading from sensor periodically Optical receiver Respond by CCR

9. CCR Corner cube retroreflector Built using MEMS: Micro-Electro- Mechanical Systems Placing 3 mirrors at right angles to each other to form corner of box which has been silvered inside Reflects light back to sending position By modulating position of mirrors, beams can be modulated

12. APPLICATIONS: Defense-related sensor networks  Dangerous for human Virtual keyboards  Accelerometers  with a MEMS augmented-reality heads-up display, invisible computer I/O Product quality monitoring  temperature, humidity monitoring of meat, produce, dairy products  impact, vibration, temp monitoring of consumer electronics

13. Applications contd. Smart office spaces  environmental conditions are tailored to the desires of every individual Interfaces for the Disabled  to monitor blinking & facial twitches - and send them as commands Inventory Control

14. ON THE DARKER SIDE: PRIVACY????????

15. CONCLUSION: It’s the power of PC, in a speck of dust.

16. BIBLIOGRAPHY: http://www- bsac.eecs.berkeley.edu/~warneke/Sm artDust/ http://www- bsac.eecs.berkeley.edu/~warneke/Sm artDust/ http://robotics.eecs.berkeley.edu/~pist er/SmartDust/ http://robotics.eecs.berkeley.edu/~pist er/SmartDust/ http://www.photonics.com/XQ/ASP/url. readarticle/artid.193/QX/readart.htm http://www.photonics.com/XQ/ASP/url. readarticle/artid.193/QX/readart.htm

17. THANK YOU