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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Quasicrystals (QCs) are a novel form of matter, which are neither crystallinenor amorphous. Among many surprising properties of QCs is their high catalyticactivity. We propose a mechanism explaining this peculiarity based on unusualdynamics of atoms at special sites in QCs, namely, localized anharmonicvibrations (LAVs) and phasons. In the former case, one deals with a largeamplitude (~ fractions of an angstrom) time-periodic oscillations of a smallgroup of atoms around their stable positions in the lattice, known also asdiscrete breathers, which can be excited in regular crystals as well as in QCs.On the other hand, phasons are a specific property of QCs, which arerepresented by very large amplitude (~angstrom) oscillations of atoms be-tweentwo quasi-stable positions determined by the geometry of a QC. Large amplitudeatomic motion in LAVs and phasons results in time-periodic driving of adjacentpotential wells occupied by hydrogen ions (protons or deuterons) in case ofhydrogenated QCs. This driving may result in the increase of amplitude andenergy of zero-point vibrations (ZPV). Based on that, we demonstrate a drasticincrease of the D-D or D-H fusion rate with increasing number of modulationperiods evaluated in the framework of Schwinger model, which takes into accountsuppression of the Coulomb barrier due to lattice vibrations. In this context,we present numerical solution of Schrodinger equation for a particle in anon-stationary double well potential, which is driven time-periodicallyimitating the action of a LAV or phason. We show that the rate of tunneling ofthe particle through the potential barrier separating the wells is enhanceddrastically by the driving, and it increases strongly with increasing amplitudeof the driving. These results support the concept of nuclear catalysis in QCsthat can take place at special sites provided by their inherent topology.

Catalytic mechanism of LENR in quasicrystals based on localized anharmonic vibrations and phasons