In article number 1700884, Han Zhang and co‐workers show that non‐layered materials can be exfoliated into 2D nanosheets by a liquid phase exfoliation method. Importantly, the as‐prepared 2D Se nanosheets exhibit excellent ultrashort pulse generation of an optical communication band. The cartoon rabbit on the cover has firm front teeth, which enables the foods with strong anisotropy between length and thickness directions to be thinned. The bread and carrot denote layered materials (such as graphite) and non‐layered materials (such as bulk Se crystal), respectively. The rabbit's front teeth denote probe sonication in the liquid phase exfoliation process that is believed to be oriented in the vertical direction.

中文翻译：

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硒纳米片：2D非分层硒纳米片：简便的合成，光致发光和超快光子学（先进光学材料24/2017）

Han Zhang和他的同事在文章1700884中表明，可以通过液相剥离方法将非分层材料剥离为2D纳米片。重要的是，所制备的2D Se纳米片表现出出色的超短脉冲产生光通信频段。盖子上的卡通兔子前齿牢固，可以使长度和厚度方向上具有强烈各向异性的食物变稀。面包和胡萝卜分别表示分层的材料（例如石墨）和非分层的材料（例如块状硒晶体）。兔子的前牙表示在液相剥离过程中的探头超声处理，据信该超声处理是沿垂直方向进行的。