A microfluidic device consists of microchannels etched into a glass chip. The li

Question

A microfluidic device consists of microchannels etched into a glass chip. The liquid sample is then moved through the channels using electroosmosis. A particular microfluidic device contains a channel with a rectangular cross section of 14.0 ?m x 74.1 ?m. If a 149 pL sample is injected onto the channel, what is the length of the sample zone in millimeters?

A microfluidic device consists of microchannels etched into a glass chip. The liquid sample is then moveg Mas through the channels using electroosmosis. A particular microfluidic device contains a channel with a rectangular cross section of 14.0 x 741 . If a 149 pL sample is injected onto the channel, what is the length of the sample zone in millimeters? Number mim The sample travels the 24.2 mm to the detector in 6.50 s. Calculate the standard deviation of the bandwidth due to the finite size of the injection zone. Number Calculate the standard deviation of the bandwidth due to diffusion if the diffusion coefficient of the solute is 3.06 x10 m2/s. Number diff What is the total bandwidth at the baseline (w), f w40obs, where Oobs is the observed total standard deviation of the bandwidth? Number

Explanation / Answer

1pL = 1000 cubic micrometer.

So 149 pL= 149000 cubic micrometer.

Now, let the length of the sample zone= x.

We know that Volume (V) = Area x Length (here x)

Therefore, x= V/A

or x= 149000 cubic micrometer /(14x74.1 square micrometer)

or x= 143.6283 micrometer or 0.1436283 millimeter

So the answer is 0.1436283 millimeters.

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