Macroscopic Spiral Patterns of Cholesteric Cellulose Nanocrystals Induced by Chiral Doping and Vortex Flowing.
Sign Up to like & getrecommendations! Published in 2023 at "Biomacromolecules"
DOI: 10.1021/acs.biomac.2c01033
Abstract: Negatively surface-charged sulfate cellulose nanocrystals (CNCs) are always slowly self-assembled into left-handed cholesteric mesophases. In this work, macroscopic spiral patterns induced by counterclockwise vortex flowing or chiral doping were investigated. Results show that iridescent patterns… read more here.
Keywords: vortex flowing; macroscopic spiral; chiral doping; spiral patterns ... See more keywords
Emerging planetary nebulae within 3D spiral patterns
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1170
Abstract: We present the first 3D radiation-hydrodynamic simulations of the formation of planetary nebulae (PNe) emerging from 3D spiral patterns. We use the guacho code to create 3D spiral structures as a consequence of the distortions… read more here.
Keywords: emerging planetary; planetary nebulae; pne; spiral patterns ... See more keywords
Spiral instabilities: mechanism for recurrence
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz2132
Abstract: We argue that self-excited instabilities are the cause of spiral patterns in simulations of unperturbed stellar discs. In previous papers, we have found that spiral patterns were caused by a few concurrent waves, which we… read more here.
Keywords: spiral instabilities; mechanism; spiral patterns; mechanism recurrence ... See more keywords