谢菲尔德大学的研究人员成功复制了保存于大英博物馆的罗马卢克格杯的变色光学特性，这件文物距今已有1600年历史1。该杯在普通光线下呈翡翠绿色，但在背光照射时会变为红宝石红色1。这一效果是通过在熔融玻璃中嵌入金银纳米粒子实现的，这些纳米粒子比一粒沙子小1000倍1。研究人员以古罗马原始配方为基础进行了复制1。
卢克格杯已被国际专家小组认可为世界七大玻璃奇迹之一1。虽然20世纪60年代曾有类似颜色的玻璃被复制，但本次研究的成果更接近原件的真实色泽1。复制品将在11月6日至15日于谢菲尔德大学心灵节的千禧美术馆展出，随后在玻璃艺术博物馆永久展出1。据历史记载，哈德良皇帝曾在给其妹夫的信中提到这样的变色杯："我给你寄去了变色杯，是庙宇祭司送给我的……我希望你在宴会宴日使用它们"1。
Researchers at Sheffield University have successfully replicated the optical properties of the Lycurgus Cup, a Roman glass vessel now housed in the British Museum and dating back approximately 1,600 years.1 The cup displays a striking colour-shifting effect: it appears jade green under normal lighting but transforms to ruby red when backlit.1 This remarkable phenomenon is achieved through the embedding of gold and silver nanoparticles within the molten glass,1 with each nanoparticle being roughly 1,000 times smaller than a grain of sand.1
The recreation marks a significant achievement in understanding ancient Roman glassmaking techniques. The original cup was recognized in 2022 as one of the world's seven glass wonders by an international panel of experts.1 While similar coloured glass was replicated in the 1960s, the current research produces results that more closely match the authentic hues of the original piece.1 The cup's creation required heating the molten glass to temperatures exceeding 1,000 degrees Celsius.1
The reproduction will be displayed at Sheffield University's Mind Festival from November 6-15 at the Millennium Gallery,1 with plans for the replica to enter the permanent collection of the Glass Art Museum thereafter.1
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