HARRICK PLASMA

Optical quantification of interfacial charge states

Methods of generating second harmonic generation (SHG) signals from interfaces formed with, or formed over, a noncentrosymmetric material, e.g., α-quartz, are provided. The methods make use of the noncentrosymmetric material as an internal phase reference for the determination of a variety of interfacial electrostatic parameters, including interfacial potential, interfacial charge density, and the sign of the interfacial charge (i.e., net positive or net negative).

Geiger, Franz M., Paul E. Ohno, Hong-fei Wang, Kenneth B. Eisenthal

US20180164657A1

2018-06-14

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