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Summary: what you must know about scattering

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Phase fronts (planes of equal phase)

Scattering vector

Independent scatterers:

In reality:

Guinier range:

I(K) exp(-RgK)2/3)

LOG-LOG plot:

Porod range:

I(K) A/K4

total surface area

2p/d

4 orders of magnitude variation

Dangerous region

‘1D object’

orientational average

‘2D object’

R = 95 nm

Johnson et al. (Utrecht); published in Langmuir (2005)

- SANS: structure factor effect in dipolar chains

M. Klokkenburg et al.,

to be published.

- Small-angle x-ray scattering (SAXS)
- Small-angle neutron scattering (SANS)
- Light scattering
See slides of the other lecture