Fiber, Optic, DNA, Test
Tuesday, September 05, 2006
A Fiber Optic DNA Test sensor array has been designed and developed that can detect test samples across 50,000 fluorescent sensors. A 1mm by 1mm square of a Fiber Optic bundle contains Fiber Optic elements of 3um diameter. Sensors are embedded with dyes to a depth of 3um and the location of each sensor is known. Sensors are activated by a particular bio agent such as DNA strands, bacteria, or yeast cell. The system measures the fluorescent sensor signal and also recognizes sensor location since each sensor is location dye coded.
The microscope used consists of a Xenon arc lamp (75 watt), a dichroic housing and a CCD camera. Sensor detection level is extremely sensitive.
Source: Photonics Spectra, April 2003; Jason Epstein, Tufts University, Department of Chemistry, David Walt Laboratory, Medford, MA, Ph 617-627-5772
Reference: None Available
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posted by JD52 @ 10:08 PM,
