Corona poling is a technique in optoelectronics.
Corona discharge is a partial breakdown of air, usually at atmospheric pressure, and is initiated by a discharge in an inhomogeneous electric field (see Figure 1).
[1] Although corona poling can be performed at room temperature, poling at elevated temperature has several advantages.
For example, raising the temperature in a polymer guest-host system close to its glass-rubber transition temperature before poling increases the mobility of the guest molecules and allows rotation to occur during poling.
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