Q/V
SI unit of capacitance is the farad; 1 farad is 1 coulomb per volt. Capacitance can be calculated if the geometry of the conductors and the dielectric properties of the insulator between the conductors are known. For example, the capacitance of a parallel-plate capacitor constructed of two parallel plates both of area A separated by a distance d is approximately equal to the following:
of fiexed charges is far from interface on the substrate and shifting will not exist any more when it is located on the interface between metal and interface. Mobile charges has the same effect. But it makes the curve shift toward applied voltage because the movement of charges is determined by applied voltage(-,+). It is known that mobile charges are generated when dielectric material has the im
4. Equipment
4.1 RCA cleaning
RCA cleaning is a series of rinsing procedure prior to experiment with Si wafer. The purpose of the RCA clean is to remove organic contaminants (such as dust particles, grease or silica gel) from the wafer surface. There are three steps to be performed. The first step is to remove organic contaminant from surface of wafer. Second step is to remove any oxide layer
of the electrolyte solution, the gas ions caused by the electromotive force acting on the electrode output.
Electrolyte solution and electrolytic reactions that occur when things are separated by the current output.
Oxidation catalyst (Pt, Pd) with aluminum oxide (Al2O3) and thorium (ThO2) in the ceramic 0.05 (mm) or less resistance of the platinum coil The structure of putting
Pl
◎압전기 효과
압전기 효과에는 압전기 직접효과와 압전기 역효과가 있다. 전자의 압전기 직접효과란 압전소자에 외부응력, 진동변위 등을 가하면, 그 출력단에 전기 신호가 발생하는 현상을 말한다. 또한 후자의 압전기 역효과란 압전소자에 외부로부터 전압을 가하면 소자가 기계적 변위를 일