Abstract
Purpose - Despite the notable progress in electronic imaging devices, these sensors still can't compete with biological vision counterparts such as the human eye. Light sensitive bio-layers and pigments in living organisms show superior performance in terms of low noise operation and speed. Although photoactive bio-layers have been used to construct electronic imaging devices, they are usually hard to develop, and the organisms that produce these active layers have low growth rates.Design/methodology/approach - In this study, novel bioactive films are used to construct imaging pixels. Among 40 pigment producing, prokaryotic marine bacteria, 4 strains which show faster growth rates in the presence of light, are screened and characterized by FTIR and visible absorption. Subsequently they are used as active layers in light sensitive sensors. The performance of the obtained cells is eventually evaluated by time domain photoresponse measurements.Findings - It is shown that while the obtained strains have high growth rates and their mass volume reproduction is relatively simple, they provide many interesting characteristics such as high speed and low noise operation when incorporated as photosensitive layers.Originality/value - Since the mass reproduction of the obtained cultures is simple, they are an appropriate choice for use in planner and flexible document imaging devices and DNA microarray sensors.
Purpose - Despite the notable progress in electronic imaging devices, these sensors still can't compete with biological vision counterparts such as the human eye. Light sensitive bio-layers and pigments in living organisms show superior performance in terms of low noise operation and speed. Although photoactive bio-layers have been used to construct electronic imaging devices, they are usually hard to develop, and the organisms that produce these active layers have low growth rates.Design/methodology/approach - In this study, novel bioactive films are used to construct imaging pixels. Among 40 pigment producing, prokaryotic marine bacteria, 4 strains which show faster growth rates in the presence of light, are screened and characterized by FTIR and visible absorption. Subsequently they are used as active layers in light sensitive sensors. The performance of the obtained cells is eventually evaluated by time domain photoresponse measurements.Findings - It is shown that while the obtained strains have high growth rates and their mass volume reproduction is relatively simple, they provide many interesting characteristics such as high speed and low noise operation when incorporated as photosensitive layers.Originality/value - Since the mass reproduction of the obtained cultures is simple, they are an appropriate choice for use in planner and flexible document imaging devices and DNA microarray sensors.