Fulfilled by researchers from the Shanghai Institute of Ceramics5, the harvest was published in "Nature Materials" in April. Ductility is common in metals while it is rarely observed in inorganic semiconductors6, especially at room temperature. Most semiconductor materials are brittle7 and cannot bend, pull or compress. The newly-discovered semiconductor a-Ag2S is ductile8 like metal and easily changes shape instead of breaking under outer deformation9, according to the research. The material is expected to be applied10 in flexible electronic technologies such as wearable devices. For the application of flexible electronics, the research team also produced a thin film made of a-Ag2S and found that it had great deformability and good electrical properties.