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SUMMARY:Chemical gardens in horizontal confined geometry: diffusion-contro
 lled growth and osmotic lysis - Mingchuan Zheng
DTSTART:20230921T120000Z
DTEND:20230921T130000Z
UID:TALK205465@talks.cam.ac.uk
CONTACT:115708
DESCRIPTION:Chemical gardens are self-assembled semi-permeable precipitate
  structures. They are considered to be the laboratory analogue to hydrothe
 rmal vents -- volcanic activities in the deep sea that have been hypothesi
 sed to be relevant to the origin of life. In this work\, we grow chemical 
 gardens in the confinement of a horizontal Hele-Shaw cell. It is found tha
 t the growth of the chemical gardens follows a diffusion-controlled dynami
 cs. At a reproducible time after the start of an experiment\, the chemical
  garden fractures and bursts. We consider this to be caused by a mechanism
  similar to osmotic lysis of biological cells.
LOCATION:MR15\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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