Kikunaga Kazuya, Terasaki Nao
Sensing System Research Center, National Institute of Advanced Industrial Science and Technology, 807-1 Shuku-Machi, Tosu, Saga, 841-0052, Japan.
Sci Rep. 2022 Jun 2;12(1):8524. doi: 10.1038/s41598-022-12704-5.
Can we visualise static electricity, which everyone in the world knows about? Since static electricity is generated by contact or peeling, it may be a source of malfunction of electronic components, whose importance is steadily increasing, and even cause explosion and fire. As static electricity is invisible, makeshift measures of static electricity are taken on various surfaces; there is also a common view that it is hard to take effective measures. Here we present a specific luminescent material, SrAlO: Eu, which emits light at excitation by an electrostatic charge in the air. Till now, in the interaction between electricity and luminescent materials, it was considered that emission of light is enabled by accelerated particles colliding with the luminescent material in vacuo. There have been no reports on luminescent materials being responsive to low-energy electrostatic charges under atmospheric pressure. Using SrAlO: Eu luminescent material discovered by us, we succeeded for the first time in static electricity visualisation in the form of green light. In addition to the fact that such static electricity induced luminescence assists in solving electrostatic-related problems in the industry, it also provides a new measurement method that facilitates the observation of previously invisible electric charges in the air.
我们能看到世界上人人皆知的静电吗？由于静电是由接触或剥离产生的，它可能是电子元件故障的一个来源，而电子元件的重要性正在稳步增加，甚至会引发爆炸和火灾。由于静电是不可见的，人们在各种表面采取了临时的防静电措施；也有一种普遍的观点认为很难采取有效措施。在这里，我们展示一种特定的发光材料，SrAlO: Eu，它在受到空气中的静电荷激发时会发光。到目前为止，在电与发光材料的相互作用中，人们认为光是由真空中加速的粒子与发光材料碰撞而产生的。还没有关于发光材料在大气压下对低能量静电荷有响应的报道。利用我们发现的SrAlO: Eu发光材料，我们首次成功地以绿光的形式实现了静电可视化。除了这种静电诱导发光有助于解决工业中与静电相关的问题这一事实外，它还提供了一种新的测量方法，便于观察空气中以前不可见的电荷。
