QUANTUM CONVERSION AND IMAGE DETECTION BY A BACTERIORHODOPSIN-BASED ARTIFICIAL PHOTORECEPTOR
QUANTUM CONVERSION AND IMAGE DETECTION BY A BACTERIORHODOPSIN-BASED ARTIFICIAL PHOTORECEPTOR
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DOI：
10.1126/science.255.5042.342
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发表时间：
1992-01-17
期刊：
影响因子：
56.9
通讯作者：
ITOH, I
中科院分区：
文献类型：
--
作者：
MIYASAKA, T;KOYAMA, K;ITOH, I
采用Langmuir-Blodgett方法在SnO2导电电极上形成了一层由细菌紫紫红质（bR）组成的紫膜片段（50 ~ 500埃厚）。将该薄膜与薄的水电解质凝胶接触，构建了SnO2/bR/电解质/Au电极结结构的电化学三明治型光电池。在可见光照射下，基于br的光电池产生了高效的整流光电流，并被证明具有独特的对紧强度的差分响应性，这是体内生物光感受器的特征。为了研究bR的图像检测和处理能力，制备了一种包含bR光电池像素网络的人工光感受器。
A thin film (50 to 500 angstroms thick) comprising fragments of bacteriorhodopsin (bR)-containing purple membrane was formed on an SnO2 conductive electrode by the Langmuir-Blodgett method. The film was put into contact with a thin, aqueous electrolyte gel to construct an electrochemical sandwich-type photocell with a junction structure SnO2/bR/electrolyte/Au electrode. Under visible fight irradiation, the bR-based photocell produced an efficient rectified photocurrent that proved to have unique differential responsivity to tight intensity, which is characteristic of in vivo biological photoreceptors. An artificial photoreceptor comprising a pixel network of the bR photocell was fabricated in an attempt to study image-detecting and processing abilities of bR.