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#1011Computer Science & AIFront Page13 January 2026

Chiral Photonic Crystals: The Science of Invisible Spy Ink

Researchers have engineered a polymer material that remains optically hidden in dry conditions but reveals vivid structural colours when exposed to specific solvents. This 'off-to-on' switching mechanism uses light scattering to conceal information, offering a new method for secure anti-counterfeiting labels.

By Zeng, Ji, Luo, Xiao, Yang, Huang, Wang, Duan

#1012Chemistry & Material ScienceFront Page4 January 2026

Breaking Bricks: A Cool New Method for Creating Single-atom catalysts

Researchers have developed a method to synthesize single-atom catalysts at room temperature using the electrochemical reactions inside lithium-ion batteries. This approach achieves high metal loading and stability, bypassing the need for energy-intensive high-temperature processes.

By Su, Xu, Zhao, Du, Liu, Li, Liu, Zhang, Luo, Geng, Chen, Zhang, Tang, Zhang, Huang, Suenaga, Wang, Cheng, Lin, Tan, Dong, Liu, Huang, Xiong

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