Lecture 24 Chemical Microsystems

Lecture 24 Chemical Microsystems - Outline Chemical...

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Chemical Microsystems Applications Fundamentals of Micromachining Dr. Bruce Gale With Special Thanks to Dr. Ron Besser Outline • Microfluidic Component Examples • Chemical Microsystems for Analysis • Chemical Microsystems for Synthesis Microchannels, Fluidic Vias KOH Etch vs. DRIE KOH Etched (100 µ m channels) DRIE Etched (5 µ m channels)
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Microchannels Microchannel Reaction Zone 100 µ m Channels 5 µ m Channels Reactor Cross Section Inside Channel Urea Ammonia Product “First generation” PDMS Microreactors 5 cm 7.5 cm 10 cm 150 µ m Scale = 1 mm Scale = 100 µ m PDMS MicroReactor
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Flow characteristics of transverse mixing features Features Flow depicted by contrasting dark lines/light green areas Fluid mixing to bring soluble reactant into contact with catalyst surface Scale Comparison Nanoreactor or Micelle Macroscale, Industrial Scale
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C.M. for Analysis • Definition •L ab -on - ch ip • Example: micro gas-analysis device • Example: Caliper oligonucleotide separation • Example: Nanogen biochips Lab-On-Chip Micro-Gas-Analyzer Micro-Gas Analyzer Result
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Applications of Microreactors 1. Distributed Processing 2. Toxic or Hazardous Chemicals 3. Chemical Prototyping 4. High-Value, Low-Volume Chemicals 5. Bulk Production of Commodity Chemicals 6. Special Environments 7. Laboratory Systems 8. Combinatorial Chemistry C.M. for Synthesis
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Lecture 24 Chemical Microsystems - Outline Chemical...

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