Vật liệu rắn nhẹ nhất thế giới
Các nhà khoa học thuộc Đại học Chiết Giang ở Hàng Châu (Trung Quốc) vừa trình làng vật liệu gel khí graphene nhẹ nhất thế giới, có khả năng nằm cân bằng trên những cánh hoa.
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