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Filtering by: Subject Nitzschia -- Physiology

Silicon and germanium uptake and cell growth by the marine diatom Nitzschia frustulum

Creator:

Jeffryes, Clayton S.

Abstract:

Diatoms are single celled algae that form cell walls made primarily of silicon dioxide (SO₂). The metabolic machinery that gives diatoms the ability to biogenically form highly ordered solid silica from soluble silicon extracted from their external environment provides a unique platform to create novel nanostructured materials inexpensively and with...

Resource Type:

Masters Thesis
Photoluminescence properties investigation of germanium inserted biosilica generated by bioreactor culture of marine diatom Nitzschia frustulum

Creator:

Qin, Tian

Abstract:

The purpose of this research was to investigate the optoelectronic properties of the Ge doped biosilica, mainly focused on the photoluminescence (PL) properties of diatom frustules of N. frustulum that contain metabolically inserted germanium oxide produced by a two-stage photobioreactor cultivation process. In order to explain the observed PL intensity...

Resource Type:

Masters Thesis
Characterizations of silicon-germanium nanocomposites fabricated by the marine diatom Nitzschia frustulum

Creator:

Liu, Shuhong

Abstract:

Marine diatoms are a class of microalgae that possess cell walls composed of silica nanoparticles. These organisms actively assimilate silicic acid Si(OH)4 from seawater, polymerize silicic acid to silica nanoparticles by a protein-mediated precipitation process, and then assemble the silica nanoparticles into intricate patterns that constitute the cell wall microarchitecture...

Resource Type:

Masters Thesis