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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Rapid Subtractive Patterning of Live Cell Layers with a Microfluidic Probe
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1D fast coded aperture camera.

Magnus Haw1, Paul Bellan1

  • 1Department of Applied Physics and Materials Science, Caltech, 1200 E. California Blvd. MC 128-95, Pasadena, California 91125, USA.

The Review of Scientific Instruments
|May 3, 2015
PubMed
Summary

A new 1D coded aperture camera prototype offers a 40x throughput increase for plasma imaging. This visible light camera can be adapted for EUV/X-ray imaging with simple modifications.

Area of Science:

  • Optics and Imaging
  • Plasma Physics
  • Detector Technology

Background:

  • Plasma experiments require advanced imaging techniques for EUV/X-ray bands.
  • Existing imaging systems like pinhole cameras have limitations in throughput and signal-to-noise ratio.

Purpose of the Study:

  • To develop a prototype 1D coded aperture camera for plasma imaging.
  • To enhance throughput and signal-to-noise ratio compared to traditional methods.

Main Methods:

  • Utilized a 1D coded aperture with printed transparency sheets.
  • Employed an 80-channel photodiode array detector operating at 9 V reverse bias.
  • Operated the camera at a 100 MHz frequency for fast data acquisition.

Main Results:

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  • Achieved a 40-fold increase in throughput in the low signal limit.
  • Demonstrated a signal-to-noise gain of approximately 7 compared to pinhole cameras.
  • The current prototype images visible light, with straightforward modifications for EUV/X-ray sensitivity.

Conclusions:

  • The 1D coded aperture camera is a promising prototype for high-throughput plasma imaging.
  • Adaptation for EUV/X-ray imaging requires only detector and aperture material changes.
  • This technology offers significant improvements for plasma diagnostics.