Optical Image Contrast Reversal Using Bacteriorhodopsin Films
Optical Image Contrast Reversal Using Bacteriorhodopsin Films
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DOI：
10.1088/0256-307x/22/5/026
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发表时间：
2005-05
影响因子：
3.5
通讯作者：
Wang Ying-li;Yao Bao-li;M. Neimule;Zheng Yuan;Lei Ming;C. Guofu
中科院分区：
文献类型：
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作者：
Wang Ying-li;Yao Bao-li;M. Neimule;Zheng Yuan;Lei Ming;C. Guofu
利用细菌视紫红质（BR）薄膜的光学特性，用两种方法演示了利用细菌视紫红质薄膜的光致变色材料实现图像对比度反转的方法。一个是基于B态和M态之间的吸收差。用绿光记录的图像可以用紫光进行反向对比读出。另一种是基于线偏振光激发下BR的光致各向异性。将BR膜置于两个交叉偏振器（即偏振器和分析仪）之间，可以检测记录区域和未记录区域的偏振状态差异，从而通过旋转分析仪的偏振轴获得不同的对比图像。
The implementation of image contrast reversal by using a photochromic material of Bacteriorhodopsin (BR) films is demonstrated with two methods based on the optical properties of BR. One is based on the absorption difference between the B and M states. Images recorded by green light can be contrast reversed readout by violet light. The other is based on the photoinduced anisotropy of BR when it is excited by linear polarization light. By placing the BR film between two crossed polarizers (i.e. a polarizer and an analyser), the difference of polarization states of the recorded area and the unrecorded area can be detected, and thus different contrast images can be obtained by rotating the polarization axis of the analyser.