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Microfluidic chiral liquid crystal droplet generation towards chemical sensing applications

Research output: Contribution to conferencePoster

Original languageEnglish
Publication statusPublished - 15 Apr 2019
EventBritish Liquid Crystal Society Annual Conference (BLCS 2019) - University of Leeds, Leeds, United Kingdom
Duration: 15 Apr 201917 Apr 2019
https://www.blcs2019.org/

Conference

ConferenceBritish Liquid Crystal Society Annual Conference (BLCS 2019)
Abbreviated titleBLCS 2019
CountryUnited Kingdom
CityLeeds
Period15/04/1917/04/19
Internet address

Abstract

Due to their alignment sensitive optical properties, chiral liquid crystal droplets have been shown to form a useful platform in several applications including chemical sensing1 and laser emission2. Currently the most reliable method for producing monodisperse droplets is via microfluidic devices3, where liquid crystal is flowed in conjunction with an immiscible fluid to form a dispersed liquid crystal phase.

For droplet-based chemical sensing applications, there is a strong need for uniformity between droplets in terms of size and molecular alignment in order to ensure consistent response characteristics; however, due to the viscoelastic nature of liquid crystal phases, producing highly uniform droplets quickly and on-demand remains difficult as transient effects exist which often require in excess of an hour to stabilise. Therefore, improving the capacity of microfluidics to produce monodisperse, well aligned liquid crystal droplets is crucial to realising any chemical sensing application.

Here, an investigation into thermal treatment of chiral liquid crystal droplets both during and after the generation stage is presented and discussed in the context of improving droplet consistency and reducing lead times with a view towards droplet-based chemical sensing.

Event

British Liquid Crystal Society Annual Conference (BLCS 2019)

15/04/1917/04/19

Leeds, United Kingdom

Event: Conference

ID: 81943787