Argon gas flow through glass nanopipette
Argon gas flow through glass nanopipette
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DOI：
10.7567/jjap.55.125202
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发表时间：
2016-11
影响因子：
1.5
通讯作者：
T. Takami;Kiwamu Nishimoto;Tadahiko Goto;S. Ogawa;F. Iwata;Y. Takakuwa
中科院分区：
文献类型：
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作者：
T. Takami;Kiwamu Nishimoto;Tadahiko Goto;S. Ogawa;F. Iwata;Y. Takakuwa
我们在真空中观察到了氩气体通过玻璃纳米管的流动。在真空室之间设置内径为100 nm、刀柄长度为3 mm的玻璃纳米管柱，并从纳米管柱顶部向底部引入Ar气体。对出口压力进行了监测，入口压力在50-170千帕范围内增加。入口压力低于100kPa时观察到努森流动，入口压力高于120kPa时观察到泊松流动。提出的压力依赖气体流动方法提供了一种在将玻璃纳米管用于各种应用之前对其进行评估的方法，包括纳米沉积到表面和飞秒注入活细胞。
We have observed the flow of argon gas through a glass nanopipette in vacuum. A glass nanopipette with an inner diameter of 100 nm and a shank length of 3 mm was set between vacuum chambers, and argon gas was introduced from the top of the nanopipette to the bottom. The exit pressure was monitored with an increase in entrance pressure in the range of 50–170 kPa. Knudsen flow was observed at an entrance pressure lower than 100 kPa, and Poiseuille flow was observed at an entrance pressure higher than 120 kPa. The proposed pressure-dependent gas flow method provides a means of evaluating the glass nanopipette before using it for various applications including nanodeposition to surfaces and femtoinjection to living cells.