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Related Concept Videos

Photoreceptors and Plant Responses to Light02:00

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Related Experiment Video

Updated: Jan 19, 2026

Photoreceptors and Plant Responses to Light
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Biological Kerker Effect Boosts Light Collection Efficiency in Plants.

Hani Barhom, Andrey A Machnev, Roman E Noskov

  • 1Research Institute of Influenza , Ministry of Healthcare of the Russian Federation , Prof. Popova str. 15/17 , St. Petersburg 197376 , Russia.

Nano Letters
|September 10, 2019
PubMed
Summary

Alpine plants use calcium carbonate nanoparticles to enhance light collection for photosynthesis. These vaterite nanospherulites exhibit directional light scattering via the Kerker effect, improving efficiency.

Keywords:
Biophotonicsautofluorescencecalciteplant photonicspolycrystalline biomineral spherulitevaterite

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Related Experiment Videos

Last Updated: Jan 19, 2026

Photoreceptors and Plant Responses to Light
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Area of Science:

  • Biomaterials Science
  • Optics
  • Plant Biology

Background:

  • Vaterite and calcite, polymorphs of calcium carbonate (CaCO3), are recognized for their potential in drug delivery and tissue engineering.
  • These minerals are crucial biogenic components in nature, often forming self-assembled polycrystal micro- and nanoparticles (spherulites).
  • Alpine plants, specifically the Saxifraga genus, have been observed to produce CaCO3 nanoparticles on leaf margins.

Purpose of the Study:

  • To investigate how Saxifraga plants utilize CaCO3 polycrystal nanoparticles for improved light collection efficiency.
  • To elucidate the optical properties of synthesized vaterite nanospherulites and the underlying physical mechanisms.
  • To explore the application of the Kerker effect in bioinspired light-harvesting strategies.

Main Methods:

  • Artificial synthesis of vaterite nanospherulites.
  • Dark-field spectroscopy measurements to analyze optical properties.
  • Comprehensive numerical analysis to model particle microstructure and light scattering.
  • Ex vivo studies of leaf microstructure and optical properties of Saxifraga plants.

Main Results:

  • Demonstration of directional light scattering from synthesized vaterite nanospherulites.
  • Observation of the generalized Kerker condition, where higher-order multipoles interfere constructively in the forward direction.
  • Highly directive forward light scattering from vaterite nanospherulites across the visible spectrum.
  • Confirmation of the Kerker effect's importance in alpine Saxifraga species for light collection.

Conclusions:

  • Saxifraga plants employ CaCO3 nanoparticles to tailor light scattering channels and enhance light collection efficiency.
  • The observed phenomenon is governed by the Kerker effect, enabling constructive interference of multipoles for forward scattering.
  • This research offers a bioinspired strategy for designing efficient light-harvesting systems using self-assembled CaCO3 nanoparticles.