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  Subjects -> ELECTRONICS (Total: 152 journals)
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 1)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 5)
Advances in Microelectronic Engineering     Open Access   (Followers: 2)
Advances in Power Electronics     Open Access   (Followers: 8)
Aerospace and Electronic Systems, IEEE Transactions on     Hybrid Journal   (Followers: 68)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 10)
Annals of Telecommunications     Hybrid Journal   (Followers: 4)
APL : Organic Electronics and Photonics     Hybrid Journal   (Followers: 2)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 6)
Archives of Electrical Engineering     Open Access   (Followers: 9)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 5)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 9)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 16)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 14)
Biomedical Instrumentation & Technology     Full-text available via subscription   (Followers: 4)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 5)
BULLETIN of National Technical University of Ukraine. Series RADIOTECHNIQUE. RADIOAPPARATUS BUILDING     Open Access   (Followers: 2)
Bulletin of the Polish Academy of Sciences : Technical Sciences     Open Access  
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 13)
China Communications     Full-text available via subscription   (Followers: 4)
Circuits and Systems     Open Access   (Followers: 9)
Consumer Electronics Times     Open Access   (Followers: 4)
Control Systems     Hybrid Journal   (Followers: 22)
Electronic Markets     Hybrid Journal   (Followers: 5)
Electronic Materials Letters     Hybrid Journal   (Followers: 3)
Electronics     Open Access   (Followers: 7)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 5)
Electronics Letters     Hybrid Journal   (Followers: 19)
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 20)
Energy Harvesting and Systems : Materials, Mechanisms, Circuits and Storage     Hybrid Journal   (Followers: 1)
EPJ Quantum Technology     Open Access  
EURASIP Journal on Embedded Systems     Open Access   (Followers: 8)
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Foundations and TrendsĀ® in Communications and Information Theory     Full-text available via subscription   (Followers: 6)
Foundations and TrendsĀ® in Signal Processing     Full-text available via subscription   (Followers: 4)
Frequenz     Full-text available via subscription   (Followers: 2)
Frontiers of Optoelectronics     Hybrid Journal   (Followers: 2)
Geoscience and Remote Sensing, IEEE Transactions on     Hybrid Journal   (Followers: 21)
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 4)
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 15)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 14)
IEEE Consumer Electronics Magazine     Full-text available via subscription   (Followers: 16)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 10)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 2)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 6)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 10)
IEEE Transactions on Audio, Speech, and Language Processing     Hybrid Journal   (Followers: 12)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 23)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 16)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 7)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 14)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 17)
IEICE - Transactions on Electronics     Full-text available via subscription   (Followers: 8)
IEICE - Transactions on Information and Systems     Full-text available via subscription   (Followers: 7)
IET Microwaves, Antennas & Propagation     Hybrid Journal   (Followers: 7)
IET Power Electronics     Hybrid Journal   (Followers: 10)
IET Wireless Sensor Systems     Hybrid Journal   (Followers: 7)
IETE Journal of Education     Open Access   (Followers: 2)
IETE Journal of Research     Open Access   (Followers: 9)
IETE Technical Review     Open Access   (Followers: 4)
Industrial Electronics, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 5)
Informatik-Spektrum     Hybrid Journal  
Instabilities in Silicon Devices     Full-text available via subscription  
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 1)
International Journal of Advanced Electronics and Communication Systems     Open Access   (Followers: 5)
International Journal of Advanced Research in Computer Science and Electronics Engineering     Open Access   (Followers: 20)
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 3)
International Journal of Aerospace Innovations     Full-text available via subscription   (Followers: 11)
International Journal of Antennas and Propagation     Open Access   (Followers: 8)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 1)
International Journal of Biomedical Nanoscience and Nanotechnology     Hybrid Journal   (Followers: 7)
International Journal of Computational Vision and Robotics     Hybrid Journal   (Followers: 4)
International Journal of Computer & Electronics Research     Full-text available via subscription   (Followers: 2)
International Journal of Control     Hybrid Journal   (Followers: 12)
International Journal of Electronics     Hybrid Journal   (Followers: 2)
International Journal of Electronics & Data Communication     Open Access   (Followers: 4)
International Journal of Electronics and Telecommunications     Open Access   (Followers: 3)
International Journal of Granular Computing, Rough Sets and Intelligent Systems     Hybrid Journal   (Followers: 1)
International Journal of High Speed Electronics and Systems     Hybrid Journal  
International Journal of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 1)
International Journal of Nano Devices, Sensors and Systems     Open Access   (Followers: 4)
International Journal of Nanoscience     Hybrid Journal   (Followers: 1)
International Journal of Numerical Modelling:Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 2)
International Journal of Power Electronics     Hybrid Journal   (Followers: 5)
International Journal of Review in Electronics & Communication Engineering     Open Access   (Followers: 2)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 2)
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 2)
International Journal on Communication     Full-text available via subscription   (Followers: 8)
International Journal on Electrical and Power Engineering     Full-text available via subscription   (Followers: 11)
International Transaction of Electrical and Computer Engineers System     Open Access  
ISRN Electronics     Open Access   (Followers: 1)
ISRN Signal Processing     Open Access   (Followers: 1)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
Journal of Artificial Intelligence     Open Access   (Followers: 5)
Journal of Circuits, Systems, and Computers     Hybrid Journal   (Followers: 1)
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 2)
Journal of Electrical Bioimpedance     Full-text available via subscription   (Followers: 2)
Journal of Electrical Engineering & Electronic Technology     Full-text available via subscription   (Followers: 1)
Journal of Electromagnetic Analysis and Applications     Open Access   (Followers: 5)

        1 2 | Last

Journal Cover   Radiophysics and Quantum Electronics
  [SJR: 0.274]   [H-I: 8]   [4 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1573-9120 - ISSN (Online) 0033-8443
   Published by Springer-Verlag Homepage  [2300 journals]
  • Characteristics of PTR Glass with Novel Modified Composition
    • Abstract: We compare spectral and holographic characteristics of a novel material designed for manufacture of photothermorefractive (PTR) glass. The parameters of holograms recorded in classical and modified PTR glass are confronted. It is shown that unlike the classical PTR glass, the modified PTR glass does not have an additional absorption band in the blue-green spectral region. This allows one to record purely phase holograms in the visible spectral range. The amplitude of modulation of the first harmonic in the refraction factor for the modified photothermorefractive glass is twice as high as that within the classical approach.
      PubDate: 2015-02-25
       
  • Evaluation of Diffraction Efficiency and Image Quality in Optical
           Reconstruction of Digital Fresnel Holograms
    • Abstract: We evaluate diffraction efficiency and image quality in the process of optical reconstruction of the digital holograms, which are displayed on spatial light modulators (SLM) with 2 and 256 brightness levels. The dependences of the above-mentioned parameters on the ratio between the intensities of the object and reference waves during recording of digital holograms are found. Numerically synthesized digital Fresnel holograms were used for modeling of the optical image retrieval. The results of the analysis were used to determine the ratios of intensities of the object and reference waves, at which the best ratios of diffraction efficiency and quality of the optically reconstructed images are achieved in the cases of using the amplitude and phase SLMs.
      PubDate: 2015-02-25
       
  • Optimization of the Optical Microelements Using High-Performance Computer
           Systems
    • Abstract: We present a numerical analysis of the laser beam diffraction by a two-zone binary microlens for different focal lengths. Characteristics and features of diffraction of the Gaussian beam and the (0,1) Gauss–Laguerre mode with linear and circular polarizations by the considered element are studied.
      PubDate: 2015-02-25
       
  • Application of the Phase Light Modulator in the Image Optical Encryption
           Scheme with Spatially Incoherent Illumination
    • Abstract: We describe application of the phase liquid-crystal spatial light modulator HoloEyePLUTOVIS as an encoding element in the image optical encryption scheme with spatially incoherent illumination. Optical encryption and numerical decryption of test images were conducted. The results of experiments demonstrate the efficiency of the constructed optical encryption scheme.
      PubDate: 2015-02-25
       
  • Four-Wave Interaction on Resonance and Thermal Nonlinearities in a Scheme
           with Concurrent Pump Waves for High Conversion Coefficients
    • Abstract: We have obtained the dependences of the conversion coefficient and the bandwidth of spatial frequencies on the intensity of pump waves for a four-wave converter of radiation for the resonance and thermal nonlinearity in a scheme with concurrent pump waves. The connection between the conversion coefficient and spatial selectivity of a four-wave radiation converter has been found.
      PubDate: 2015-02-25
       
  • Formation Dynamics of Transmission Holograms in Lithium Niobate Crystals
           Doped by Copper Through High-Temperature Diffusion
    • Abstract: The results of experimental realization of the technology of diffusion doping of X-cut congruent lithium niobate crystals by copper and the results of studying their photorefractive and photovoltaic properties are presented. The latter was done by using the Bragg diffraction of the reading beam with a wavelength of 655 nm on the dynamic transmission volume–phase holograms recorded by laser beams having a wavelength of 532 nm. It is shown that by their photogalvanic properties the created samples, which are 1.8 mm thick, are similar to the single crystals grown by the conventional method from melt containing copper monooxide as a supplement.
      PubDate: 2015-02-25
       
  • Focused Laser-Beam Scanning by the Apertured Probe of a Near-Field
           Microscope
    • Abstract: The focused-light scanning using the two-dimensional aperture probe is numerically simulated by the finite element method. The difficulties related to simulating the probe of the near-field scanning optical microscopy are considered. The patterns of the spatial distribution of the flux density in the focal spot, which are scanned by the probe, are obtained. The probe response corresponds to the transverse component of the electric field and the gradient of the longitudinal component of electric field in the cases of sharp focusing of the Gaussian beam and the Gaussian–Hermitean beam focusing, respectively.
      PubDate: 2015-02-25
       
  • Development of Periodic and Three-Dimensional Structures in
           Acrylic-Monomer Photopolymer Materials by Holographic Methods
    • Abstract: We show the possibility and advantages of using photopolymer materials based on acrylic monomers and nanocomposites in holography. Holographic characteristics of these materials and conditions for forming periodic structures and three-dimensional elements in them are determined.
      PubDate: 2015-02-24
       
  • Using Speckle Dynamics for Comparison of the Metabolic Activity of
           Different Cell Cultures
    • Abstract: The dynamics of speckles in the image plane of a monolayer of cells cultivated on a glass substrate has been recorded. Cell cultures HEL-3, L-41, and Vero were selected as the objects of research. The digitized value of the radiation intensity I in one pixel and the parameter η characterizing the change in the intensity distribution on an 10 × 10 pixel area was recorded for 24 hours. The multiple determinacy coefficient of three cell cultures, which was obtained from the time dependences of η, was equal to 0.94.
      PubDate: 2015-02-24
       
  • Parallel Monitoring of Living Cell Cultures by Means of Digital-Holography
           and Fluorescent Microscopy
    • Abstract: We propose using the method of holographic microscopy to detect fine morphologic changes in living cells. An “LSM 510” laser confocal scanning microscope is modified to allow recording digital microholograms which can be used to reconstruct the amplitude and phase of the radiation transmitting through the sample. Measuring the phase increment of the object beam in cells and the intercellular space yields information on the optical length of the ray path in the cells (spatial dimensions and the refractive index), which in turn contains information on changes in the morphology and intracellular contents. Calcium activity is studied by means of fluorescent microscopy which makes it possible to detect minor variations in the intracellular concentration of calcium ions. By studying the dynamics of calcium oscillations and variations in the optical thickness, conclusions are made about the interrelation of functional and morphological variations, and comparative analysis of these variations is performed.
      PubDate: 2015-02-24
       
  • Achievement of Superresolution in Optical-Thickness Measurement and
           Statistical Localization of Fluorophores in Holographic and Fluorescent
           Microscopy
    • Abstract: We present the concept of combining the holographic and localization fluorescent microscopy. The ways to optimize the optical schemes and image recording regimes in the process of combining such interferometric and statistical methods are developed, which makes it possible to study the dynamics of the internal cell structure with transverse and longitudinal superresolution.
      PubDate: 2015-02-24
       
  • A Study of Multicomponent Mechanical Oscillations by the Method of Digital
           Holographic Vibrometry
    • Abstract: We analyze the basic principles and features of the digital recording and reconstruction of holographic images and interferograms. The advantages and disadvantages of digital interferograms are presented in comparison with the classical analog interferograms. The main requirements to the parameters of software and hardware for digital holographic interferometry are indicated. Examples of practical application of the digital holographic interferometry for analyzing various vibrations under both laboratory and industrial conditions are given. A number of new high-efficiency methods for performing vibrational measurements and analyzing multicomponent free and coupled oscillations and impact vibrational excitations are described, and examples of a particular realization with presentation of the results in the form of computer dynamic animation visualization (three-dimensional representation in time) are given. Promising methods of vibrational measurements related to the programmed multiframe recording and subsequent multifunctional analysis of the recorded data array with animation of the results are proposed.
      PubDate: 2015-02-24
       
  • Methods of Processing and Retrieval of Information from Digital Particle
           Holograms and Their Application
    • Abstract: We consider a holographic study of particles. The main attention is focused on retrieval of information from a digital hologram, namely, determination of the characteristics of a particle and its holographic image. To estimate the efficiency of this stage, we used quantitative criteria of the holographic image quality. These criteria were also used for determining the position of a particle in space, which ensures a significantly higher accuracy (an error of about 0.2 mm) compared with other methods. An algorithm for increasing the quality of the holographic image of a particle is developed. A method for two-dimensional holographic mapping of the volume of the medium with particles for automatic retrieval of information from the digital particle hologram is discussed.
      PubDate: 2015-02-24
       
  • Dynamics of Light-Absorption Variations Induced in a Bismuth Silicate
           Crystal by Visible Laser Illumination
    • Abstract: We present the results of experimental studies of the dynamics of the photoinduced optical absorption in a bismuth silicate crystal subject to continuous laser irradiation with wavelengths of 532 and 655 nm. The semiconductor-laser light beam with the wavelength λ = 655 nm causes the crystal bleaching at this wavelength, whereas its exposure to a shorter-wavelength irradiation from the optical-spectrum green region with a wavelength of 532 nm increases the optical absorption at both wavelengths, of 532 and 655 nm. The experimental results are interpreted using the theoretical model which assumes that the crystal has deep defect centers of two types so that an electron at each of these centers can be in one of the states characterized by different photoionization cross sections.
      PubDate: 2015-02-24
       
  • Digital Holographic Interferometry of a Wide Spectral Range in the Systems
           of Nondestructive Testing of Dynamics of Micro- and Macrosystems
    • Abstract: Modern digital holographic interferometry is used to study the objects of various nature and various spatial scales. In this case, a wide spectral range of coherent electromagnetic radiation from long-wavelength infrared to deep ultraviolet is used. In this work, we present the results of studying dynamic processes in construction materials by the methods of digital holographic interferometry using radiation with a wavelength of up to 9.3 μm. The holographic method for testing of microelectromechanical structures is also considered. The method of digital holographic interferometry, which uses an automated holographic microscope, is proposed to study microscopic biological objects.
      PubDate: 2015-02-24
       
  • Dynamic Speckle-Interferometry of Microscopic Processes in Thin Biological
           Objects
    • Abstract: Speckle dynamics in a thin biological object illuminated through a diffusor box is studied both theoretically and experimentally. A model that allows for random time variations in the phase difference Δφ of pairs of waves transmitted through the object is used in the theoretical part of this study. Formulas for the time-averaged intensity of the radiation at a certain point of observation and a temporal autocorrelation function of the radiation intensity are deduced. The relationship between the characteristics of the random variable Δφ and the parameters of the speckle dynamics is discussed. The case of occurrence of a quasiperiodic variation in the radiation intensity is separately considered. The theoretical results are used for interpretation of the data obtained in the experiments on studying the metabolic activity of cells cultivated on a glass substrate.
      PubDate: 2015-02-24
       
  • Diffractive Elements in the Optical System: Successes, Challenges, and
           Solutions
    • Abstract: Correction of aberrations is regarded as one of the most successful applications of diffractive optical elements in the optical system. The ways of overcoming these negative properties of the diffractive elements as spherochromatism and power spectral selectivity are presented. Using the technique given in this paper, a compact plastic–lens refractive–diffractive objective, which can operate in a wide spectral range including the visible and near-infrared radiation, has been designed.
      PubDate: 2015-02-24
       
  • On Modeling of the Biological Memory Associative Properties by the Volume
           Superimposed Holograms Technique
    • Abstract: We consider two phenomena that are typical of the volume superimposed holograms, namely, the formation of the dielectric-permittivity structures corresponding to interference of the reference waves, which did not interfere in reality, due to the nonlinearity of the medium, and double diffraction of the waves in the hologram volume. It is shown that when the holograms are recovered, these mechanisms form associations between the waves which are not linked explicitly by virtue of the different-time record of individual holograms. The strengths of the associative links are proportional to the scalar product of the signal images. A neural network model that allows for the described mechanisms as related to recording of the volume superimposed holograms using the Fourier holography scheme with plane off-axis reference beams is proposed.
      PubDate: 2015-02-24
       
  • Automated Construction of the Basic Dynamic Models of the Atmospheric
           Photochemical Systems Using the RADM2 Chemical Mechanism as an Example
    • Abstract: The method of automated construction of the basic dynamic models, i.e., mathematically correctly simplified models using a minimum possible set of the dynamic variables, which is necessary for correct description of the spatiotemporal behavior of the atmospheric photochemical systems, is developed. The proposed method is based on numerical search for all the chemical components rapidly evolving near their equilibrium states and sorting out slow families among them, whose characteristic lifetimes turn out to be much longer compared with those of their components. The method is applied to the RADM2 chemical mechanism which is used for simulating air contamination in urbanized regions. This allowed us to find almost thirty fast variables of the above-mentioned system, single out three intersecting slow families and reduce the dimension of the corresponding basic dynamic model more than twice. It is shown that the constructed model well reproduces (both qualitatively and quantitatively) the calculated results, which are obtained using the reference full-scale model, and can be used for both direct simulation of the air quality in the atmospheric boundary layer with allowance for the actual transfer processes and retrieval of information on the tropospheric chemical substances from the available observation data bases.
      PubDate: 2014-12-05
       
  • Excitation of High-Q Whispering Gallery Modes in a Hemispherical Shielded
           Dielectric Cavity Using a Slot Transmission Line
    • Abstract: We studied experimentally the electrodynamic characteristics of a hemispherical shielded dielectric cavity in the 8-mm wavelength range. The use of a slot transmission line is proposed to excite whispering gallery modes in such a cavity. It was found that the proposed excitation method is efficient and allows one to generate high-Q higher modes in a shielded dielectric cavity introducing no additional energy losses. It was shown experimentally that the achieved intrinsic Q-factor of the cavity under consideration can exceed the threshold values limited by the dissipative losses in its material. This effect is determined by the shift of the resonance field to the air gap between the metal and dielectric elements of the cavity. Agreement of the calculated and experimental data is demonstrated.
      PubDate: 2014-12-05
       
 
 
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