def get_sample():
"""
Returns a sample with cosine ripples on a substrate.
The structure is modelled as a 2D Lattice.
"""
# defining materials
m_ambience = ba.HomogeneousMaterial("Air", 0.0, 0.0)
m_substrate = ba.HomogeneousMaterial("Substrate", 6e-6, 2e-8)
m_particle = ba.HomogeneousMaterial("Particle", 6e-4, 2e-8)
# collection of particles
ripple1_ff = ba.FormFactorRipple1(100*nm, 20*nm, 4*nm)
ripple = ba.Particle(m_particle, ripple1_ff)
particle_layout = ba.ParticleLayout()
particle_layout.addParticle(ripple, 1.0)
interference = ba.InterferenceFunction2DLattice(
200.0*nm, 50.0*nm, 90.0*deg, 0.0*deg)
pdf = ba.FTDecayFunction2DCauchy(
1000.*nm/2./numpy.pi, 100.*nm/2./numpy.pi)
interference.setDecayFunction(pdf)
particle_layout.setInterferenceFunction(interference)
# assemble the sample
air_layer = ba.Layer(m_ambience)
air_layer.addLayout(particle_layout)
substrate_layer = ba.Layer(m_substrate)
multi_layer = ba.MultiLayer()
multi_layer.addLayer(air_layer)
multi_layer.addLayer(substrate_layer)
return multi_layer
"""
Plot form factors.
"""
import bornagain as ba
from bornagain import nanometer, degree
import bornplot as bp
det = bp.Detector( 200, 0, 5, 0, 5 )
n = 4
results = []
for i in range(n):
omega=90*i/(n-1)
title = r'$\omega=%d^\circ$' % omega
ff = ba.FormFactorRipple1(25*nanometer, 10*nanometer, 8*nanometer )
trafo = ba.RotationZ(omega*degree)
data = bp.run_simulation(det,ff,trafo)
results.append( bp.Result(i, data, title) )
bp.make_plot( results, det, "ff_Ripple1" )
ba.FormFactorAnisoPyramid(20.0, 16.0, 13.0, 60.0 * deg),
ba.FormFactorBox(20.0, 16.0, 13.0),
ba.FormFactorCone(10.0, 13.0, 60.0 * deg),
ba.FormFactorCone6(10.0, 13.0, 60.0 * deg),
ba.FormFactorCuboctahedron(20.0, 13.0, 0.7, 60.0 * deg),
ba.FormFactorCylinder(8.0, 16.0),
ba.FormFactorDodecahedron(5.0),
ba.FormFactorEllipsoidalCylinder(8.0, 13.0, 16.0),
ba.FormFactorFullSphere(8.0),
ba.FormFactorFullSpheroid(10.0, 13.0),
ba.FormFactorHemiEllipsoid(10.0, 6.0, 8.0),
ba.FormFactorIcosahedron(8.0),
ba.FormFactorPrism3(10.0, 13.0),
ba.FormFactorPrism6(5.0, 11.0),
ba.FormFactorPyramid(18.0, 13.0, 60.0 * deg),
ba.FormFactorRipple1(27.0, 20.0, 14.0),
ba.FormFactorRipple2(36.0, 25.0, 14.0, 3.0),
ba.FormFactorTetrahedron(15.0, 6.0, 60.0 * deg),
ba.FormFactorTruncatedSphere(5.0, 7.0),
ba.FormFactorTruncatedSpheroid(7.5, 9.0, 1.2),
ba.FormFactorTruncatedCube(15.0, 6.0)
]
def get_sample(formfactor):
"""
Returns a one-layer sample that contains particles with given form factor.
"""
# defining materials
m_ambience = ba.HomogeneousMaterial("Air", 0.0, 0.0)
m_particle = ba.HomogeneousMaterial("Particle", 6e-4, 2e-8)