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Biochip with Integrated Vertical Emitting Light Source - Book Report/Review Example

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This report “Biochip with Integrated Vertical Emitting Light Source” discusses the results from the integration of the microfluidic device into semiconductor laser material. Laser emitted from the active region can increase assay temperature beyond 37O C which can be fatal for any organisms being studied…
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Biochip with Integrated Vertical Emitting Light Source
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Download file to see previous pages The fabrication of microfluidic channels is critical in evaluating the contents of fluid inside the channel. In recent years the implementation, integration of fluid, analytical separation and detection techniques on individual microfabricated devices for complete on-chip analysis have been one of the main objectives of microfluidics research. Some of the integrated features applied in microfluidic devices include “measuring the optical transmission, absorbance or fluorescence of the channel contents” (Course handout). Laser technology emitting very narrow light beams is an appropriate technology to be used in microfabrication of microfluidic devices. The beam from these light sources becomes very small using LEDs and VCSELs by virtue of being semi-conductor based. These reduce the averaging effect and also avoid “cross-talk between adjacent channels” (Irawan et al, 2007). LEDs can also be composed of organic compounds and such LEDs are called organic light emitting diodes (OLEDs). The emitting material can come from small organic molecules (Tang & VanSlyke, 1987) or a polymer (Burroughes et al, 1990). Polymer materials can be flexible (Gustafsson, 1992). Known as flexible organic LEDs (FOLED), they have opened up possibilities of many new applications such as backlit displays (Friend et al, 1999). Usually very small in area, measuring less than 1 mm2, the built-in optical components can shape its radiation patterns (Moreno & Sun, 2008). LEDs have many advantages such as “broad range of available emission wavelengths, high efficiency in power, stable output, long lifeline, durability, reliability, low cost, and low self-heating” (Zukauskas et al, 2004: p. 128). ...Download file to see next pagesRead More
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