As a rule of thumb, a single large decoupling capacitor is better, while two MLCC side-by-side can worsen noise. Naturally, one has to keep in mind that although ‘more capacity is better for ...

Leaky capacitors (and leaky batteries ... "The easiest thing to remember is that the negative side of the caps points towards the power switch. Or if you want to test it, put your meter on ...

Salahuddin and Datta found that, under certain conditions, the use of ferroelectric materials leads to a negative capacitance (that is, the voltage of the capacitor decreases as charge is added).