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The sensor of amino acids has been investigated. Ranges of linearity have been established on dependences of the wavelength of minimum transmission of optical radiation on the concentration of amino acids.
In order to solve the problems associated with the express registration of the presence of biologically active substances in callus biomass, we propose the use of cholesteric liquid crystal (CLC) with a spiral structure as a material of a sensitive element of optical sensor of flavonoids. Cholesteric liquid crystal BLO62 is proposed to use as a sensitive element. Spectral characteristics of alcohol...
The cholesteric liquid crystals (CLC) is sensitive active medium to detection the biological substances. We proposed to use the CLC to design the enzymes optical sensor. The operation designed optical sensor based on changing the wavelenght at minimum transmittance of active medium under the enzymes influence. The functional and electrical schemes of designed optical sensor are developed.
As the active medium of triglycerides optical biosensor the cholesteric-nematic mixtures (CNM) are proposed to use. The efficiency to detect the triglycerides molecules caused by sensitivity the CNM helical structure to the biological substances. The position of wavelength transmittance minimum of optical radiation in CNM contacted with biological agents is changed. The block diagram of the developed...
In paper as the gas sensitive material of primary transducer of SO2 and NO2 optoelectronic multi-sensor the 5CB nematic liquid crystal (NLC) are used. The sensitivity of our sensitive element by means of adding to 5CB the cholesteric liquid crystal (CLC) was increased. The electrical realization of our multi-sensor was on ATmega 8 microcontroller.
This paper presents approaches and typical examples of model studies of transient mode characteristics for photocurrent integrators of luminescence sensors. These model studies allow to define integrator parametric dependencies on the characteristics of operational amplifiers. Research was conducted using SPICE models. A number of new laws and influence of operational amplifiers' options on the characteristics...
This work describes the structure of the real time environmental monitoring automated system on the basis of the network of liquid crystal optical gas sensors. There were proposed principles data gathering from distributed objects.
This work describe the results of spectral investigations of cholesteric liquid crystal-nanodopant Fe2O3 system under the influence of carbon monoxide. These investigations are useful to design the optoelectronic sensors of harmful gases.
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