V08_Microfluidic Systems - Bio-MEMS Quiz
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Questions and Answers

The Capillary number is one of the common parameters affecting droplet formation at T-Junctions.

True (A)

The flow rate ratio at a T-Junction is calculated as the ratio of QD to QF.

False (B)

The viscosity ratio is represented by the symbols μD and μF.

False (B)

The aspect ratio in droplet formation at T-Junctions refers to the ratio of channel height to width.

<p>False (B)</p> Signup and view all the answers

In Plug Generation at T-Junctions, different angles have no effect on the process.

<p>False (B)</p> Signup and view all the answers

Squeezing primarily occurs at low flow rates in the context of droplet formation.

<p>True (A)</p> Signup and view all the answers

In the formation of droplets at a T-junction, the cutting rate is unaffected by flow rates and channel dimensions.

<p>False (B)</p> Signup and view all the answers

In the creation of double (multi-) emulsions, the hydrophobic channel wall is preferred for O/W emulsions.

<p>False (B)</p> Signup and view all the answers

For flow focusing, in a hydrodynamic focusing arrangement, the dispersed phase is expanded at a constriction.

<p>False (B)</p> Signup and view all the answers

In the process of droplet formation by flow focusing, water is not used as part of the arrangement.

<p>False (B)</p> Signup and view all the answers

Passive structures play a significant role in the design and functioning of microfluidic systems like Bio-MEMS.

<p>True (A)</p> Signup and view all the answers

Plugs are commonly used in T-Junction flow configurations to control the droplet formation process.

<p>True (A)</p> Signup and view all the answers

Passive structures are not involved in the formation of droplets at T-junctions.

<p>False (B)</p> Signup and view all the answers

Coaxial injection is a common method used for droplet formation at T-junctions.

<p>True (A)</p> Signup and view all the answers

Droplet formation at T-junctions only occurs for small flow rates of the continuous phase.

<p>False (B)</p> Signup and view all the answers

The value of α in the equation Qwater = 1 + α * w * Qoil depends on the viscosity of the fluids.

<p>False (B)</p> Signup and view all the answers

Plugs are commonly formed at T-junctions due to high shear stress.

<p>True (A)</p> Signup and view all the answers

The formation of droplets at T-junctions is not affected by interfacial tension.

<p>False (B)</p> Signup and view all the answers

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