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A Femtoliter Droplet Array for Massively Parallel Protein Synthesis from Single DNA Molecules
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Particle-size analysis by laser diffraction with a complementary metal-oxide semiconductor pixel array.

Z Ma1, H G Merkus, B Scarlett

  • 1Particle Technology Group, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands. z.ma@tnw.tudelft.nl

Applied Optics
|March 20, 2008
PubMed
Summary
This summary is machine-generated.

This study introduces a new complementary metal-oxide semiconductor pixel sensor for laser diffraction particle sizing, significantly improving resolution and application flexibility compared to traditional photodiode detectors.

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Analytical Chemistry

Background:

  • Traditional laser-diffraction instruments using photodiode detectors face limitations in particle-size resolution.
  • Accurate particle size distribution is crucial in various scientific and industrial applications.

Purpose of the Study:

  • To implement and evaluate a complementary metal-oxide semiconductor (CMOS) pixel sensor for enhanced particle-size measurement via laser diffraction.
  • To overcome the resolution limitations of existing photodiode-based systems.

Main Methods:

  • Development and calibration of a CMOS pixel sensor for laser diffraction measurements.
  • Implementation of advanced signal-processing and inversion algorithms for particle-size distribution retrieval.
  • Utilizing the sensor's high resolution, no-blooming, and wide dynamic range for direct scattering pattern analysis.

Main Results:

  • The CMOS sensor demonstrated improved particle-size resolution compared to conventional methods.
  • The system offers increased flexibility for a wider range of particle-sizing applications.
  • Per-pixel calibration ensures accurate and reliable measurements.

Conclusions:

  • The CMOS pixel sensor represents a significant advancement in laser diffraction particle-size analysis.
  • This technology enhances measurement accuracy and broadens the applicability of laser diffraction techniques.