picoampere

The leakage of the 1N3595 diode is generally less than one picoampere even with 1mV of forward bias, so the circuit won't interfere with measurements of 10pA or more.

即使在1mV正向偏置之下，1N3595漏电流一般会小于1皮安，此电路不会影响10pA或更大电流测量。

For electrical properties of MOS capacitors, the C-V curves were obtained by LCR meter (HP4284A), and picoampere meter (HP4140B) was used to measure the J-V curves.

另外以电感电容电阻计量仪(HP4284A)进行C-V曲线量测；以安培计量仪(HP4140B)进行J-V曲线量测。