Color image detection by biomolecular photoreceptor using bacteriorhodopsin-based complex LB films

Choi, Hyun‐Sik; Jung, WooChul; Min, Junhong; Lee, Won Hong; Choi, Jeong‐Woo

doi:10.1016/s0956-5663(01)00211-1

Cited by 18 publications

(9 citation statements)

References 27 publications

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“…When a light pattern impinges on the array, the currents are recorded simultaneously from each bio-pixel, and represent the original pattern. We have taken inspiration from over 20 years of pioneering work from several groups, which have prototyped bioelectronic imaging devices with bR1011121314, by depositing the protein as films on electrode surfaces. However, in our approach, the structure of the array is a soft material containing droplets interfaced through bilayers to a hydrogel, which allow us to detect patterns of light through current generation.…”

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confidence: 99%

Light-Patterned Current Generation in a Droplet Bilayer Array

Schild

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Box

et al. 2017

Sci Rep

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We have created a 4 × 4 droplet bilayer array comprising light-activatable aqueous droplet bio-pixels. Aqueous droplets containing bacteriorhodopsin (bR), a light-driven proton pump, were arranged on a common hydrogel surface in lipid-containing oil. A separate lipid bilayer formed at the interface between each droplet and the hydrogel; each bilayer then incorporated bR. Electrodes in each droplet simultaneously measured the light-driven proton-pumping activities of each bio-pixel. The 4 × 4 array derived by this bottom-up synthetic biology approach can detect grey-scale images and patterns of light moving across the device, which are transduced as electrical current generated in each bio-pixel. We propose that synthetic biological light-activatable arrays, produced with soft materials, might be interfaced with living tissues to stimulate neuronal pathways.

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mentioning

confidence: 99%

Light-Patterned Current Generation in a Droplet Bilayer Array

Schild

Booth

Box

et al. 2017

Sci Rep

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“…As the comparison results of Figure 7 show, for each sensor, the maximum normalized photocurrent is located at a different wavelength, which can be attributed to the biosensitive pigment culture type. This difference in photocurrent production curve versus wavelength can be used to extract color and wavelength information (Frydrych et al, 2000;Choi et al, 2001). Similar to the experiments performed in the time domain setup, the sensor based on strain S1 shows the highest photocurrent production characteristics.…”

Section: Culture Characteristicsmentioning

confidence: 56%

“…In addition, because the biolayers come in different colors, it is expected to obtain different photoresponses from each sensor which is useful in color recognition functions (Frydrych et al, 2000;Choi et al, 2001). Table I summarizes some important characteristics of the cultures used in this work.…”

Section: Culture Characteristicsmentioning

confidence: 99%

Light-sensitive biosensors based on photoactive marine cultivated strains

2014

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Purpose -The purpose of this study is to construct imaging pixels using novel bioactive films. Despite the notable progress in electronic imaging devices, these sensors still cannot compete with biological vision counterparts such as the human eye. Light sensitive biolayers and pigments in living organisms show superior performance in terms of low noise operation and speed. Although photoactive biolayers 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 -Among 40 pigment producing prokaryotic marine bacteria, four strains which show faster growth rates in the presence of light are screened and characterized by Fourier transform infrared spectroscopy 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 -Because 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.

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“…В работах других авторов [42] было показано, что до-статочный объем информации может быть получен и от небольших ансамблей нейронов (15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30). В частности, M. Serruya и соавт.…”

Section: интерфейс мозг-компьютер (моторная функция)unclassified

“…В конце 90-х годов некоторые ав-торы [18,19] предлагали двухкомпонентную схему искус-ственной сетчатки, состоящую из расположенного вне глаза энкодера и имплантируемого стимулятора, контак-тирующего с ганглиозным слоем сетчатки. Применение бактериального родопсина в качестве светочувствитель-ного элемента искусственной сетчатки продолжалось и в 2000-х годах, когда технологические возможности позво-лили использовать его для построения систем, обеспечи-вающих восприятие цветных изображений [20][21][22].…”

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The current state of the brain—computer interface problem

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et al. 2015

Vopr. neirokhir.

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Color image detection by biomolecular photoreceptor using bacteriorhodopsin-based complex LB films

Cited by 18 publications

References 27 publications

Light-Patterned Current Generation in a Droplet Bilayer Array

Light-Patterned Current Generation in a Droplet Bilayer Array

Light-sensitive biosensors based on photoactive marine cultivated strains

The current state of the brain—computer interface problem

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