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Important Facts For Prelims

Holographic Imaging Based Method

  • 15 Oct 2020
  • 2 min read

Why in News

Scientists from New York University have developed a method using holographic imaging to detect both viruses and antibodies.

  • Holography is a process that creates three-dimensional images called holograms using laser beams, the properties of interference and diffraction, light intensity recording, and illumination of the recording.

Key Points

  • About the Method:
    • It uses laser beams to record holograms of the specially prepared test beads.
    • The surfaces of the beads are activated with biochemical binding sites that attract either antibodies or virus particles, depending on the intended test.
    • Binding antibodies or viruses causes the beads to grow by a few billionth parts of a metre.
    • Researchers detect this growth through changes in the beads’ holograms. The test can analyse a dozen beads per second.
  • Significance:
    • The method can test either for the virus (current infection) or antibodies (immunity).
    • The breakthrough has the potential to aid in medical diagnoses, and specifically, those related to the Covid-19 pandemic.
    • If fully realised, this proposed test could be done in under 30 minutes, is highly accurate, and can be performed by minimally trained personnel.

Source: IE

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