Similarly, in an ultracapacitor, when voltage is applied across the two metal plates (i.e. during charging), a charge still builds on the two electrodes—one positive, one negative.

同样，在超级电容中，当两块金属片被施以电压（即充电）后，电荷建立于两极，一极为正，一极为负。

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When the microscope's sharp tip applied a positive voltage to the material's surface, it drew conducting lines that exist in the space between the oxide layers.

当显微镜的尖端把正电压施加到材料表面时，它就在氧化层之间的空白处画出了导线。

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When a voltage is applied across the membrane, a strand of DNA is drawn into the pore.

当在膜一侧侧施加电压，DNA链就被拉进纳米孔。

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The resin within the carbon layers is laced with lithium ions, so that each layer acts like an electrode, causing the positively charged lithium ions to collect in one layer when a voltage is applied, and a current to flow when the sandwich is placed in a circuit.

ECONOMIST: Carbon-composite batteries

When a voltage is applied, the electrostatic force that results either attracts the two mirrors together, or pushes them apart.

ECONOMIST: Displays: The fluttering of tiny pixels | The

When a voltage was applied at the ends of the yarns, these ions moved into the fibres, causing them to expand.

BBC: Nanotube yarns twist like muscles