Podcasts · The Hardware Podcast with Fexingo: Chips, Devices, and Electronics Engineering Conversations
How Chips Use On-Chip Spectrometers for Chemical Analysis
· 10 min · S3 E104
Episode How Chips Use On-Chip Spectrometers for Chemical Analysis
In this episode, Lucas and Luna explore how semiconductor companies are integrating miniature spectrometers directly onto chips, enabling real-time chemical analysis in everything from smartphones to medical diagnostics. They dive into the specific case of Viavi Solutions' micro-spectrometer technology, which measures just a few millimeters across but can identify materials by their spectral fingerprint. The conversation covers the underlying MEMS-based Fabry-Perot interferometer design, the challenges of maintaining optical precision in a silicon process, and why this could transform point-of-care testing and environmental monitoring. Lucas explains how this on-chip approach differs from traditional benchtop spectrometers in cost, size, and power consumption, while Luna questions the trade-offs in resolution and calibration. They also touch on the potential for consumer applications like food freshness detection and counterfeit drug identification. A concrete look at how chip-scale spectroscopy is moving from lab curiosity to commercial reality.
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Transcript
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