Comparing optical properties of different species of diatoms

Maibohm, Christian; Friis, Søren; Su, Yanyan; Rottwitt, Karsten

doi:10.1117/12.2078822

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…If diatom frustules are to be used in industrial applications, we need to determine which aspects are central for the desired application. Although there is huge morphological variation among the individual species of diatoms, this review discusses common traits as well as identifies differences (see, e.g., Maibohm et al 2015b) which can be exploited for application purposes.…”

Section: Parameters Central To Photonic Applications Of Diatom Frustulesmentioning

confidence: 99%

The fascinating diatom frustule—can it play a role for attenuation of UV radiation?

et al. 2016

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Diatoms are ubiquitous organisms in aquatic environments and are estimated to be responsible for 20-25 % of the total global primary production. A unique feature of diatoms is the silica wall, called the frustule. The frustule is characterized by species-specific intricate nanopatterning in the same size range as wavelengths of visible and ultraviolet (UV) light. This has prompted research into the possible role of the frustule in mediating light for the diatoms' photosynthesis as well as into possible photonic applications of the diatom frustule. One of the possible biological roles, as well as area of potential application, is UV protection. In this review, we explore the possible adaptive value of the silica frustule with focus on research on the effect of UV radiation on diatoms. We also explore the possible effect of the frustules on UV radiation, from a theoretical, biological, and applied perspective, including recent experimental data on UV transmission of diatom frustules.

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Section: Parameters Central To Photonic Applications Of Diatom Frustulesmentioning

confidence: 99%

The fascinating diatom frustule—can it play a role for attenuation of UV radiation?

et al. 2016

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“…The porous silicate matrix of the diatom frustule also exhibits photonic crystallike properties that in some species interact with light in the UV-visible spectrum [6,7] potentially modulating diatom photosynthesis via light focusing, waveguiding or by spectral filtration of photosynthetically productive radiation [8][9][10][11]. While only the valve optical properties of some diatom species have been studied [12][13][14], the optics underlying nanostructured girdle bands are limited to a few anecdotal observations. Fuhrmann et al [6] observed that light emitted from the edges of the girdle band in the centric diatom Coscinodiscus granii appeared green when observed with a small numerical aperture (NA 0.40) objective, and blue-green with a larger numerical aperture (NA 0.55).…”

Section: Introductionmentioning

confidence: 99%

Differences in the optical properties of valve and girdle band in a centric diatom

Goessling

Maibohm

et al. 2018

Interface Focus.

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Diatoms are phototrophic single-celled microalgae encased in a cell wall (frustule) made of amorphous silicate. The frustule comprises two valves connected by a variable number of girdle bands, all exhibiting periodic micro/nanoporous structures. We studied the optical properties in water of girdle bands from the centric diatom Coscinodiscus granii , a frustule part that so far has received little attention by the scientific community. We show that valves and girdle bands exhibit different optical properties, as valves attenuate shorter wavelengths and girdle bands attenuate longer wavelengths of the visible light spectrum. Girdle bands show iridescent coloration in dependence of the light direction. Although the biological meaning of periodic nanoscale structures of frustules is still a matter of debate, the differences of valve and girdle band optical properties indicate that living diatoms are complex optical systems, where valves, girdles and pigments modulate light inside the cell.

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Frustule Photonics and Light Harvesting Strategies in Diatoms

Goessling

Kühl

et al. 2021

Diatom Morphogenesis

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Comparing optical properties of different species of diatoms

Cited by 6 publications

References 16 publications

The fascinating diatom frustule—can it play a role for attenuation of UV radiation?

The fascinating diatom frustule—can it play a role for attenuation of UV radiation?

Differences in the optical properties of valve and girdle band in a centric diatom

Frustule Photonics and Light Harvesting Strategies in Diatoms

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