Sachs F, McGarrigle R
J Neurosci Methods. 1980 Dec;3(2):151-7. doi: 10.1016/0165-0270(80)90022-9.
We present a new method of shielding microelectrodes to within 20 micron of the tip. Stray capacity is reduced to less than 50 fF. Ordinary microelectrodes are covered with silver in a vacuum evaporator. Silver is removed from the tip by contact with a ball of mercury. The microelectrode is then insulated with a glass barrel which is sealed by dipping the tip in diluted polystyrene in amyl acetate, or by dipping the electrode in melted wax. The latter method is quick, easy and reliable.
我们提出了一种将微电极尖端屏蔽至20微米范围内的新方法。杂散电容降低到小于50飞法。普通微电极在真空蒸发器中用银覆盖。通过与汞球接触将尖端的银去除。然后用玻璃管绝缘微电极，玻璃管可通过将尖端浸入乙酸戊酯中的稀释聚苯乙烯中，或通过将电极浸入熔化的蜡中来密封。后一种方法快速、简便且可靠。
