A Mini-Atlas of diatom frustule electron microscopy images at different magnifications

Salimon, Alexey I.; Sapozhnikov, Philipp V.; Everaerts, Joris; Kalinina, Olga; Besnard, Cyril; Papadaki, Chrysanthi; Cvjetinovic, Julijana; Statnik, Eugene S.; Kan, Yuliya; Aggrey, Patrick; Kalyaev, Vladimir; Lukashova, Maria V.; Somov, Pavel A.; Korsunsky, Alexander M.

doi:10.1016/j.matpr.2020.05.602

Cited by 7 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3 , the SEM images of different diatoms collected from Lake Baikal, Arabian Sea and Skolkovo Pool clearly show diatoms with different shapes and structures. 70 However, frustules have been traditionally classified into two groups namely; centric diatoms (Centrales) and pennate diatoms (Pennales). The centric diatom frustules have surface features arranged around a point while the pennate frustules have major features at right angles to the striae.…”

Section: Nano-scale Morphology Of Diatomaceous Earthmentioning

confidence: 99%

On the diatomite-based nanostructure-preserving material synthesis for energy applications

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Nano-scale Morphology Of Diatomaceous Earthmentioning

confidence: 99%

On the diatomite-based nanostructure-preserving material synthesis for energy applications

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Example of color-azimuth from regions where nanoscale structures are not resolved is shown in (d), where images of diatom (bio-silica) were taken with an objective lens of

, hence the resolution is ∼0.61

. The regions that show azimuth colors have sub-wavelength structures [ 43 ] which are not resolved, however, their alignment is visualized. The angular azimuth difference between the colored radial rays structure in the center of the pattern is

.…”

Section: Figure A1mentioning

confidence: 99%

Structure and Optical Anisotropy of Spider Scales and Silk: The Use of Chromaticity and Azimuth Colors to Optically Characterize Complex Biological Structures

et al. 2023

View full text Add to dashboard Cite

Herein, we give an overview of several less explored structural and optical characterization techniques useful for biomaterials. New insights into the structure of natural fibers such as spider silk can be gained with minimal sample preparation. Electromagnetic radiation (EMR) over a broad range of wavelengths (from X-ray to THz) provides information of the structure of the material at correspondingly different length scales (nm-to-mm). When the sample features, such as the alignment of certain fibers, cannot be characterized optically, polarization analysis of the optical images can provide further information on feature alignment. The 3D complexity of biological samples necessitates that there be feature measurements and characterization over a large range of length scales. We discuss the issue of characterizing complex shapes by analysis of the link between the color and structure of spider scales and silk. For example, it is shown that the green-blue color of a spider scale is dominated by the chitin slab’s Fabry–Pérot-type reflectivity rather than the surface nanostructure. The use of a chromaticity plot simplifies complex spectra and enables quantification of the apparent colors. All the experimental data presented herein are used to support the discussion on the structure–color link in the characterization of materials.

show abstract

“…Example of color-azimuth from regions where nanoscale structures are not resolved is shown in (d), where images of diatom (bio-silica) were taken with an objective lens of N A = 0.6, hence the resolution is ∼0.61λ/N A ≈ λ. The regions that show azimuth colors have sub-wavelength structures [43] which are not resolved, however, their alignment is visualized. The angular azimuth difference between the colored radial rays structure in the center of the pattern is ∆θ ≈ 13 • .…”

Section: Appendix a Complex And Larger Fibersmentioning

confidence: 99%

Structure and Optical Anisotropy of Spider Scales and Silk: Use of Chromaticity and Azimuth Colors

Linklater¹,

Vailionis²,

Ryu³

et al. 2023

Preprint

View full text Add to dashboard Cite

In this perspective, we give an overview of several less explored structural and optical characterisation techniques useful for biomaterials. New insights into the structure of natural fibres such as spider silk can be gained with minimal sample preparation. Electromagnetic radiation (EMR) over a broad range of wavelengths (from X-ray to THz) provides information of the structure of the material at cor- respondingly different length scales (nm-to-mm). When the sample features, such as the alignment of certain fibres, cannot be characterised optically, polarisation analysis of the optical images can provide further information on feature alignment. The 3D complexity of biological samples necessitates that there be feature measure- ments and characterisation over a large range of length scales. We discuss the issue of characterising complex shapes by analysis of the link between the color and struc- ture of spider scales and silk. For example, it is shown that the green-blue color of a spider scale is dominated by the chitin slab’s Fabry-P ́erot type reflectivity rather than the surface nanostructure. The use of a chromaticity plot simplifies complex spectra and enables quantification of the apparent colors. All the experimental data presented herein are used to support the discussion on the structure-color link in the characterisation of materials.

show abstract

A Mini-Atlas of diatom frustule electron microscopy images at different magnifications

Cited by 7 publications

References 6 publications

On the diatomite-based nanostructure-preserving material synthesis for energy applications

On the diatomite-based nanostructure-preserving material synthesis for energy applications

Structure and Optical Anisotropy of Spider Scales and Silk: The Use of Chromaticity and Azimuth Colors to Optically Characterize Complex Biological Structures

Structure and Optical Anisotropy of Spider Scales and Silk: Use of Chromaticity and Azimuth Colors

Contact Info

Product

Resources

About