Abstract
We have investigated the combined action of the pyroelectric and photovoltaic effects exhibited by z-cut LiNbO3:Fe substrates for particle trapping and patterning. The results suggest that a suitable combination of the PY and PV effects can improved some pattern properties such as particle density or pattern contrast.
Highlights
Particle manipulation and trapping based in the electrical properties of ferroelectric crystals have been recently proposed and demonstrated
We investigate the combined action of both effects presented by Fe doped LiNbO3 substrates
The suspension temperature is kept lower than room temperature to cool the crystal inducing PY effect during particle deposition on its surface
Summary
Particle manipulation and trapping based in the electrical properties of ferroelectric crystals have been recently proposed and demonstrated. The pyroelectric (PY) effect generates patterned electric fields in LiNbO3 domain structures [1] by thermal heating or cooling. The bulk photovoltaic (PV) effect generates light induced electric fields in accordance with the illumination patterns in certain doped ferroelectrics such as LiNbO3:Fe (see [2] and references therein).
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