Abstract
The response of anisotropic pigment particle suspensions to externally applied electric fields has been explored for possible application in reflective display technologies. Three different types of pigment particle were suspended in dodecane using a polymeric stabiliser and showed Schlieren textures between crossed polarisers at high concentrations (>25-30 wt%), indicating the formation of colloidal nematic phases. Orientational order parameters were determined by X-ray scattering and the influence of polydispersity on the values is discussed. X-ray scattering measurements also demonstrated a change in the structure factor consistent with the onset of a colloidal nematic phase. In addition, the pigment particles were dispersed into various liquid crystal hosts at low concentrations (
| Original language | English |
|---|---|
| Title of host publication | HP Laboratories Technical Report |
| Edition | 6 |
| Publication status | Published - 2013 |
Keywords
- Anisotropic pigment nanoparticles
- Colloids
- Electric field alignment
- Liquid crystals
- X-ray scattering