INTEGRATED MICROPHOTOIONIZATION DETECTOR WITH AN ULTRA-THIN UV TRANSMISSION WINDOW
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2019-10-02
- Publication Date
- 2026-03-04
AI Technical Summary
Conventional UV lamps used in photoionization detectors are expensive, susceptible to degradation, and not compatible with microfabrication processes, limiting their use in microfluidic photoionization detectors (PIDs) for gas chromatography (GC) systems.
An integrated microfluidic photoionization detector (PID) with an ultrathin transmissive window made of materials like silica, fused silica, quartz, sapphire, magnesium fluoride, or calcium fluoride, allowing ultraviolet photons to pass through, and configured to generate ultraviolet photons for ionization, with a thickness of less than or equal to 20 µm, enabling efficient ionization of analytes in a microfluidic ionization chamber.
The ultrathin window enhances the performance and longevity of PIDs by allowing efficient photon transmission, reducing dead volume, and enabling precise detection of volatile organic compounds (VOCs) with improved sensitivity and reduced material costs.