Reporting online this week in Materials Letters the researchers

Reporting online this week in Materials Letters the researchers say they used samples of the glass about 50micromerters thick, or about half the diameter of a human hair, which they etched in acid until the samples eroded to a thickness of only 10 to 20 micrometers. Then they hooked the samples to two electrodes and applied an increasing voltage to test the material’s breakdown strength: its ability to withstand electrical energy. When the material reached this breakdown limit ---- at about 22,000 volts ---- the stored energy was released in what resembles “a lightning bolt conducting through air,” says co-author Nicholas Smith.
【正确答案】：研究人员本周在《材料快报》的网站上发表了论文，研究人员称他们使用了大约50微米厚、约相当于人的头发截面直径的一半的玻璃片作为样品，在酸里把这些样品的厚度一直腐蚀到仅剩10－20微米，然后把它们接到两个电极上，并逐渐增加电压以测试该材料的击穿强度，即材料承受电能的能力。当该材料达到击穿极限（大约2.2万伏）时，正如该论文的一位合著者尼古拉斯·史密斯所说，释放储存的电能就像“通过空气导电的闪电一样”。