Placing a highly viscous liquid drop on a solid surface

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Discussion Overview

The discussion revolves around methods for placing a highly viscous liquid droplet on a solid surface, specifically focusing on a droplet with a viscosity significantly higher than water and a small volume requirement.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant suggests using a pipette to place the droplet.
  • Another participant compares the situation to caulking, indicating challenges in controlling the volume or mass of the droplet, and proposes exploring screen printing techniques or using a squeegee with a perforated membrane.
  • A different participant mentions the use of solder paste in SMD circuits as a relevant analogy, suggesting that it is dispensed in small droplets.
  • Another idea presented is the use of a syringe or a soldering paste dispenser for applying the viscous material.

Areas of Agreement / Disagreement

Participants present various methods and analogies for applying the viscous droplet, but there is no consensus on the best approach or technique.

Contextual Notes

Some methods proposed may depend on specific characteristics of the viscous liquid or the solid surface, which are not fully detailed in the discussion.

Who May Find This Useful

This discussion may be useful for individuals interested in material science, engineering applications involving viscous fluids, or those working with soldering techniques in electronics.

Fluido
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Hi I'd like to ask how you would put a droplet at high viscosity (say 2.5 million times more viscous than water) on a solid surface? The droplet would have to be small (volume less than 10uL, r<1.34mm)..
Thanks!
 
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Pipette.
 
According to this you are talking about something like caulking...

http://www.cstsales.com/viscosity.html

Quite hard to control the volume or mass I suspect. perhaps look at some sort of screen printing process? Squeegee the material through a perforated membrane?

Perhaps look at how they fix silicon chips/die? Think they use small balls of solder paste?
 
sounds like the soldering paste used in SMD circuits, dispensed in Little doplets.
What about a siringe (or a soldering paste dispenser)?
 

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