The modern periodic table, arranged in rows and columns, was first introduced by Dmitri Mendeleev in 1869. At the time, it included the known elements and their properties, but Mendeleev predicted ...

A team of researchers from Peking University has published a pair of papers on a new iodine technique that can boost perovskite solar cell efficiency to 24%. This is because perovskite solar cells ...

Department Structure and Dynamics of Energy Materials, Helmholtz-Zentrum-Berlin, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany ...

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Here, electro-thermal response of thin film heaters is investigated for a wide range of periodic metallic mesh topologies. The aim of this study is to systematically investigate the effect of topology ...

Many Black inventors struggled through hardship, poverty, and, in some circumstances, slavery. Still, they prevailed and proved their genius to the world. The following are but a few of the many ...