1. Alternative CD Technologies
By James Wray

2. Music and Beyond CD’s presently used for Music and Data
Other Technologies:
Protein Detectors
Microlaboratories
Immunoassays
Nerve Gas Detectors

3. Protein Detectors
Proteins are found throughout the human body and are involved in all functions.
Blood Proteins - Markers for Different Diseases
Present Technology:
Costly
Samples are sent to Labs
Only detect a few proteins

4. Bio-CD’s :Revolutionary
David Nolte –Purdue University
Enable in office testing
Require a drop of blood
Test for over 10,000 proteins
Analog rather then Digital Results
Take 15 seconds

5. How It Works? CD’s have Pits: Uses a laser to detect concentration
Each pit would contain thousands of detector chemicals
Each track would have a different chemical
About 10,000 tracks available
Concentration of Proteins could be determined
Sensitivity – 10 nanograms/ml
Uses a laser to detect concentration

6. Making Bio-Cd’s Reality
Refine the process of depositing the chemical detectors on the tracks of the CD
Could take 10 years

7. Microlaboratory CD’s have Microstructures embedded
Samples deposited at center of CD
Centrifugal force drives samples and reagents through the microstructures
Reduces time for experiments
Used for preparing samples that will be analyzed later

8. Microstructures

9. 104 Microstructures

10. Immunoassays

11. Protein Quantification
Used to determine protein concentrations
Smaller scale then Bio-CD’s- Structures are larger
Uses laser to activate and detect fluorescence of markers

12. CD Detector

13. Nerve Gas Detector

14. Background Used to detect various nerve gases
Sarin
Somin GF
Enable inexpensive, small units to be deployed on a large-scale by police and soldiers.
Used to track presence and movement of gas after an explosion

15. Components
Uses a silicon wafer to detect compounds with a phosphorous-flourine chemical bond
It breaks the bond in the nerve gas, which emits hydrogen flouride gas which is used to etch and frost glass.
Optical coating on wafer changes color in the presence of the gas

16. CD Connection Uses a laser from a CD player to detect color changes
Low Cost - prototype constructed from a $24 CD player
More sensitive than surface acoustic-wave devices used presently
Detects Parts Per Billion
More reliable- other device has a lot of false-alarms
Can also be used as an inexpensive dosimeter

18. Scent Stories?? New Product- From the Febreeze Co.
Claims to be “Like A CD”
Technology – appears to be like a CD
Round
Spins
Very slowly

19. Not A CD Technology!

20. Questions?

21. References