【摘 要】
：
日本东京大学的研究人员研制成一种在强光照射下会变色,并且可轻易地使颜色还原的新型金属材料-三氧化钥。这种新材料是这样进行处理而具有变色功能的:首先将它放在玻璃基片
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日本东京大学的研究人员研制成一种在强光照射下会变色,并且可轻易地使颜色还原的新型金属材料-三氧化钥。这种新材料是这样进行处理而具有变色功能的:首先将它放在玻璃基片上蒸镀,然后制成厚约1微米的薄膜.薄膜是无色透明的,把它放入具有导电性的溶液里,通人微弱的电流,表面就会变成淡蓝色。利用强烈的光线在大气中照射薄膜,被照射部分变成深蓝色,长时间放里也不会褪色.要使薄膜颜色还原,只需把它重新放入具有导电性的溶液里,改变一下电流的方向,便可使之还原成淡蓝色
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