Kolektivni efekti v aktivni nematski emulziji

diplomsko delo

Nika Trnovec (Author), Bojan Šarac (Mentor)

Abstract

Namen diplomske naloge je bil optimizacija aparature za pripravo homogene aktivne nematske emulzije olja v vodi z možnostjo manipuliranja velikosti kapljic v mikro dimenzijah in nato preučiti interakcijo med sosednjimi aktivnimi nematskimi lupinami, ko se majhno število oljnih kapljic razprši v aktivnem gelu in postavi v utesnjen prostor. Za generiranje oljnih kapljic smo uporabili mikrofluidno aparaturo z geometrijo sočasnega toka, ki je bila sestavljena iz steklenih kapilar s krožnim in kvadratnim prerezom, skozi katere so nanofluidne črpalke potiskale različne tekočine. Pričakovali smo, da v zaprtosti običajno neodvisni kortikalni tokovi na ločenih kapljicah doživijo hidrodinamično sklopitev, ki bi lahko vodila do zanimivih sinhronizacijskih pojavov, ki so pomembni za razumevanje organizacije večceličnih struktur.

Keywords

aktivne snovi;aktivni nematiki;kolektivni efekti;mikrofluidne naprave;diplomska dela;

Data

Language:	Slovenian
Year of publishing:	2022
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher:	[N. Trnovec]
UDC:	544.77:66.02(043.2)
COBISS:	126389251
Views:	32
Downloads:	11
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Collective effects in active nematic emulsion
Secondary abstract:	The aim of my thesis was optimization of the apparatus for the preparation of a homogeneous active nematic oil-in-water emulsion with the possibility of manipulating the droplet size in micro dimensions and then to study the interaction between neighbouring active nematic shells when a small number of oil droplets is dispersed in the active gel and placed in a confined volume. We used a droplet-generating coflowing device, based on the combination of tapered glass capillaries with circular and square cross section through which different fluids were pushed using nanofluidic pumps. We expected that, under confinement, the normally independent cortical flows in separate droplets experience a hydrodynamical coupling that may lead to interesting synchronization phenomena, which may be relevant to the understanding of the organization of multicellular structures.
Secondary keywords:	active matter;emulsions;microfluidics;nematics;collective effects;Emulzije;Mikrofluidna tehnika;Univerzitetna in visokošolska dela;
Type (COBISS):	Bachelor thesis/paper
Study programme:	1000373
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemija
Pages:	34 str.
ID:	16372690