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SUMMARY:Engineering with Droplets - Pallav Kant (Department of Earth Scien
 ce)
DTSTART:20221013T103000Z
DTEND:20221013T113000Z
UID:TALK183035@talks.cam.ac.uk
CONTACT:Catherine Pearson
DESCRIPTION:Recent years have witnessed a surge in droplet-based technolog
 ical innovations in manufacturing\, medical diagnostics\, chemical synthes
 is\, material science\, and even forensic science. This rapid progress is 
 a result of the interdisciplinary research framework that accelerates both
  fundamental research and applications. In this talk\, we will discuss the
  challenges in designing a robust\, inkjet printing-based manufacturing pr
 ocess for display devices\, as well as opportunities for fundamental fluid
  dynamics research. In particular\, we will focus on the complexities aris
 ing from the spreading of microdroplets on patterned surfaces. The term 'p
 atterned surfaces' refers to surfaces with either micron-sized topographic
 al features\, variations in wettability\, or a combination of both. Using 
 experiments and numerical modelling\, we demonstrate that patterned surfac
 es provide an effective means to control the spread of fluid deposited usi
 ng an inkjet method. Finally\, time permitting\, we will turn our focus to
  a mistake-led discovery of self-propelling droplets. I will demonstrate t
 hat a volatile droplet deposited on a uniformly heated substrate can sprin
 g into self-propulsion. Since the temperature of the substrate in such a s
 cenario remains below the boiling temperature of the volatile liquid\, thi
 s novel route to self-propulsion is not equivalent to the Leidenfrost effe
 ct!
LOCATION:Open Plan Area\, BP Institute\, Madingley Rise CB3 0EZ
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