Active and stable metal-free heterogeneous catalysts for CO2 fixation are required to reduce
the current high level of carbon dioxide in the atmosphere, which is driving climate change …

Samples of pegmatite quartz from several localities in Norway and Namibia were
investigated by cathodoluminescence (CL) microscopy and spectroscopy, electron …

We establish a novel thin film deposition technique by transferring the principles of atomic
layer deposition (ALD) known with gaseous precursors toward precursors dissolved in a …

The optical properties of point defects are frequently the most important parameter in
applications of glassy silica. They are relatively easy to measure on standard …

Many living organisms fabricate intricate biogenic silica materials that possess unique
optical and photonic properties.[1] Recently, cell culture systems have been identified as an …

Cathodoluminescence (CL) and its temperature-dose behaviour are presented for different
crystalline and amorphous modifications of SiO2 and GeO2 as well as for Ge-doped SiO2 …

The term luminescence (originally “luminescence glow”) is derived from lumen (Latin for
light). It describes the ability of minerals to emit light after being excited with various kinds of …

The cathodoluminescent and photoluminescent properties of the nanoporous silica frustules
of various diatom strains and of natural diatom samples are presented. The spectra are …

This chapter is extended to various electronical and optical modifications of amorphous
silica (a-SiO2) layers as they are applied in microelectronics, optoelectronics, as well as in …

Under‐stoichiometric thin silica layers SiOx with different stoichiometric degree 1≤ x≤ 2,
were prepared by thermal evaporation of silicon monoxide in vacuum and in ambient …