Alternative CD Technologies By James Wray

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

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

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

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

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

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

Microstructures

104 Microstructures

Immunoassays

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

CD Detector

Nerve Gas Detector

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

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

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

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

Not A CD Technology!

Questions?

References http://news.uns.purdue.edu/UNS/html4ever/2004/040518.Nolte.CD.html www.gyros.com http://www.healthatoz.com/healthatoz/Atoz/ency/protein_electrophoresis.jsp http://www.popularmechanics.com/science/defense/1281246.html