The Conference and Spring School on Properties, Design and Applications of Upconversion Nanomaterials (UPCON) provides a new forum for all experts and newcomers in the field of upconversion research. On the occasion of the second UPCON 2018 in Valencia (Spain), we are pleased to present a collection of 12 reviews and research articles that reflect recent advances in upconversion materials, their unique luminescent properties and many applications spanning from nanoscale thermometry to biomedicine.

中文翻译：

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上转换研究的新论坛：UPCON会议。

上转换纳米材料的性能，设计和应用会议和春季学校（UPCON）为上转换研究领域的所有专家和新来者提供了一个新的论坛。在西班牙巴伦西亚举行的第二届UPCON 2018大会之际，我们高兴地提出了12条评论和研究文章的集合，这些评论和研究文章反映了上转换材料的最新进展，其独特的发光特性以及从纳米级测温到生物医学的许多应用。