Microfluidics¶
Authors: Valentyn Stadnytskyi Date created: 23 Oct 2019 Date last modified: 25 Oct 2019 Python Version: 3
Description:¶
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laue_crystallography.microfluidics.droplet_volume(length=100, diameter=250)[source]¶ convert the length of a plug to volume in 250 um capillary.
- Parameters
- lfloat
droplet or plug length
- dfloat
channel diameter
- Returns
- vfloat
volume of the object
Examples
the example of usage
>>> droplet_volume(250,250)
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laue_crystallography.microfluidics.ellipse(h=250, v=250, x0=400, y0=400, size=(1024, 1360), theta=0)[source]¶ returns array with ‘size’ with an ellipse centered at x0,y0 with diameters h(horizontal) and v(vertical) tilted at theta degrees. The h-horizontal and v-vertical is accurate only if theta is zero degrees.
- Parameters
- hfloat
diameter of horizontal(zero degrees) axis of the ellipse
- vfloat
diameter of vertical(zero degrees) axis of the ellipse
- x0float
x-coordinate of the center of the ellipse
- y0float
y-coordinate of the center of the ellipse
- sizetuple
size of the output image Default: 1024,1360
- thetafloat
angle of rotation in degrees. Default: 0
- Returns
- masknumpy array
numpy array with ‘size’
Examples
the example of usage. To draw an ellise center at (1115,659) with horizontal diameter of 52 pixels and vertical diameter of 56 pixels.
>>> e = draw_an_ellipsoid(h = 52, v = 56, x0 = 1115, y0 = 659
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laue_crystallography.microfluidics.find_circles(image)[source]¶ takes and input image and find circles in it.
returns radius and center coordinates of circles
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laue_crystallography.microfluidics.flow_cylinder(diameter=250, length=1, viscosity=1, pressure=0.1, output_units='nL')[source]¶ calculates flow rate via a cylindrical capillary with a given diameter, length and fluid viscosity under a given pressure drop. Also takes string value to define output units
- Parameters
- lengthfloat
length of a cylinder in meters
- diameterfloat
diameter of round cross-section in micrometer
- viscosityfloat
viscosity in cP or mPa*s
- pressurefloat
pressure difference in atmospheres
- output_units
output units for the flow. Supports: nL/s, uL/s. Default: nL/s
- Returns
- flowfloat
flow of fluid in nL/s
Examples
the example of usage. D=50um,L = 1, eta = 1, P = 2 -> 31.086 nL/s D=10oum,L = 0.7, eta = 23, P = 2 -> 30.893 nL/s
>>> flow_cylinder(diameter = 50, length = 1, viscosity = 1.0, pressure = 2.0) >>> 31.086120666502506
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laue_crystallography.microfluidics.plot_image_with_sum(img, title='')[source]¶ plots an image with two graphs
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laue_crystallography.microfluidics.pressure_cylinder(diameter=250, length=1, viscosity=1, flow=0.1, flow_units='nL/s', output_units='atm')[source]¶ calculates pressure drop across a cylindrical capillary with a given diameter, length and fluid viscosity with given flow rate. Also takes string value to define output units
- Parameters
- lengthfloat
length of a cylinder in meters
- diameterfloat
diameter of round cross-section in micrometer
- viscosityfloat
viscosity in cP or mPa*s
- flowfloat
pressure difference in atmospheres
- flow_unitsstring
flow units (pL/s, uL/s, ul/s, mL/s, L/s, m^3/s)
- output_unitsstring
output units for the flow. Supports: atm, Pa. Default: atm
- Returns
- pressurefloat
pressure drop across the capillary
Examples
the example of usage. D=50um,L = 1, eta = 1, P = 2 -> 31.086 nL/s D=10oum,L = 0.7, eta = 23, P = 2 -> 30.893 nL/s
>>> pressure_cylinder(diameter = 50, length = 1, viscosity = 1.0, flow = 31.086, flow_units = 'nL/s') >>> 1.9999922366316594
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laue_crystallography.microfluidics.tau(length, diameter, viscosity, compressibility)[source]¶ convert the length of a plug to volume in 250 um capillary.
- Parameters
- lengthfloat
cylinder length
- diameterfloat
cylinder diameter
- Returns
- taufloat
tau constant in seconds
Examples
the example of usage
>>> droplet_volume(250,250)