English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We show an experimental evidence of the domination of absorption overscattering in absorbance spectra of detonation nanodiamonds. We perform theabsorbance measurements on the UV-Vis spectrophotometer equipped withintegrating sphere and compare them with conventional absorbance spectra.Additionally, we measure the scattering light intensity at the cuvette sidewall (scattering at 90 degrees angle). The obtained experimental data wereinterpreted using the simulations of photon random walk in turbid media andKubelka-Munk approach. The scattering cross sections and indicatrices wereobtained by Mie theory.  We discover that despite being very close to $\lambda^{-4}$ power law (likeRayleigh scattering) the light extinction by the primary 4 nm diamondcrystallites is due to absorption only and scattering can be neglected. That isthe reason why previously absorption and scattering contributions wereconfused. The scattering is governed only by the agglomerates of 100 nm andlarger in size remaining in the hydrosols and their fraction can be effectivelycontrolled by centrifugation. Only Mie theory reproduces correctly the close to$\lambda^{-2}$ scattering by the agglomerates accounting for the weirdinterplay between their size, fractal dimension, and dielectric properties.Finally, using the obtained absorbance spectra we estimate the fraction of nondiamond phase in nanodiamonds and their agglomerates.

Evidence of absorption dominating over scattering in light attenuation by nanodiamonds