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How to make a colorful wall hanging with yarn tassels

Have you ever made yarn tassels? It's such an easy thing to do and one of the very first diy crafts a lot of us came into ...
C&EN

Nonlinear Active Materials: An Illustration of Controllable Phase Matchability

† State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, 127 Youyixilu Road, Xi’an 710072, China ‡ Department of ...