Статті в журналах: "Adaptive Dielectric"

1

Ren, Hongwen, Haiqing Xianyu, Su Xu, and Shin-Tson Wu. "Adaptive dielectric liquid lens." Optics Express 16, no. 19 (September 8, 2008): 14954. http://dx.doi.org/10.1364/oe.16.014954.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Garnell, Emil, Olivier Doaré, and Corinne Rouby. "Model-Based Adaptive Filtering of Dielectric Elastomer Loudspeakers." Journal of the Audio Engineering Society 69, no. 6 (June 3, 2021): 389–97. http://dx.doi.org/10.17743/jaes.2021.0010.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Chen, Yu, Rong Yu, Weifei Li, Omid Nohadani, Stephan Haas, and A. F. J. Levi. "Adaptive design of nanoscale dielectric structures for photonics." Journal of Applied Physics 94, no. 9 (November 2003): 6065–68. http://dx.doi.org/10.1063/1.1614422.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Bernat, Jakub, and Jakub Kolota. "A PI Controller with a Robust Adaptive Law for a Dielectric Electroactive Polymer Actuator." Electronics 10, no. 11 (June 1, 2021): 1326. http://dx.doi.org/10.3390/electronics10111326.

Повний текст джерела

Анотація:

Dielectric electroactive polymer actuators are new important transducers in control system applications. The design of a high performance controller is a challenging task for these devices. In this work, a PI controller was studied for a dielectric electroactive polymer actuator. The pole placement problem for a closed-loop system with the PI controller was analyzed. The limitations of a PI controller in the pole placement problem are discussed. In this work, the analytic PI controller gain rules were obtained, and therefore extension to adaptive control is possible. To minimize the influence of unmodeled dynamics, the robust adaptive control law is applied. Furthermore, analysis of robust adaptive control was performed in a number of simulations and experiments.

Стилі APA, Harvard, Vancouver, ISO та ін.

5

Hoffstadt, Thorben, and Jurgen Maas. "Adaptive Sliding-Mode Position Control for Dielectric Elastomer Actuators." IEEE/ASME Transactions on Mechatronics 22, no. 5 (October 2017): 2241–51. http://dx.doi.org/10.1109/tmech.2017.2730589.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Utsumi, Yozo, Toshihisa Kamei, and Ryo Naito. "Dielectric properties of microstrip-line adaptive liquid crystal devices." Electronics and Communications in Japan (Part II: Electronics) 87, no. 10 (2004): 13–24. http://dx.doi.org/10.1002/ecjb.20082.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

7

Khmil, N. V., V. G. Kolesnikov, and O. L. Altuhov. "Evaluation of disorders of adaptive mechanisms in heart failure by microwave dielectrometry." Radiotekhnika, no. 209 (June 24, 2022): 200–205. http://dx.doi.org/10.30837/rt.2022.2.209.20.

Повний текст джерела

Анотація:

Differential diagnosis of stress adaptive mechanisms is one of the areas of modern biomedical engineering and the most complex part of the pre-nosological diagnosis of cardiac pathology. One of the manifestations of disadaptation in heart failure is a violation of the mechanisms of realization of the intracellular chain "signal-function". The concept of imbalance in the functioning of the adenylate cyclase system and β-adrenergic receptors of the erythrocytes membrane and cardiomyocytes is considered in the pathogenesis of the heart. The study of the dielectric constant (ε՜) of erythrocytes of patients with heart failure was performed using an instrument-recording complex based on microwave dielectrometry of the γ-dispersion region of free water dielectric permittivity. Testing of the β-adrenergic complex of the erythrocyte membrane by specific stimulators, blockers, and modulators was implemented at a fixed frequency of microwave radiofrequency generation (f = 37,7 GHz). Interpretation of the obtained experimental data was that the process of interaction of bioregulators with the biological system is accompanied by an increase or decrease in the relative amount of free water, which leads to a change in the real part of ε՜ complex dielectric constant. This allowed us to visualize the violation of the signal cell system at the molecular level, which manifested itself in the change of integral hydration by ε՜ parameter. It was shown that the change in the dielectric constant of the erythrocyte suspension at risk (patients with hereditary predisposition to dilated and ischemic cardiomyopathy) was significant relative to the dielectric parameters of erythrocyte samples from healthy donors; there was a tendency to block β-adrenergic receptors, with the combined action of adrenaline, PGE2 and cordanum, with Δε՜ = 0,009 ± 0,008 х 10-12 F/m. It should be noted the formation of preconditions for changes in the functioning of the adenylate cyclase system and the development of heart failure in the group at risk, is accompanied by dilated and ischemic cardiomyopathy. The effectiveness of the microwave dielectrometry method for the assessment of violations of adaptation mechanisms through the adenylate cyclase system of the erythrocyte membrane in dilated and ischemic forms of cardiomyopathies is shown. The results of the study are the basis for the introduction of the dielectric constant criterion in the general algorithm of pre-nosological diagnosis of heart failure.

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Beilina, Larisa, and Eric Lindström. "An Adaptive Finite Element/Finite Difference Domain Decomposition Method for Applications in Microwave Imaging." Electronics 11, no. 9 (April 24, 2022): 1359. http://dx.doi.org/10.3390/electronics11091359.

Повний текст джерела

Анотація:

A new domain decomposition method for Maxwell’s equations in conductive media is presented. Using this method, reconstruction algorithms are developed for the determination of the dielectric permittivity function using time-dependent scattered data of an electric field. All reconstruction algorithms are based on an optimization approach to find the stationary point of the Lagrangian. Adaptive reconstruction algorithms and space-mesh refinement indicators are also presented. Our computational tests show the qualitative reconstruction of the dielectric permittivity function using an anatomically realistic breast phantom.

Стилі APA, Harvard, Vancouver, ISO та ін.

9

Ewe, Wei-Bin, Le-Wei Li, and Mook-Seng Leong. "SOLVING MIXED DIELECTRIC/CONDUCTING SCATTERING PROBLEM USING ADAPTIVE INTEGRAL METHOD." Progress In Electromagnetics Research 46 (2004): 143–63. http://dx.doi.org/10.2528/pier03091001.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

10

Findikoglu, A. T., Q. X. Jia, and D. W. Reagor. "Superconductor/nonlinear-dielectric bilayers for tunable and adaptive microwave devices." IEEE Transactions on Appiled Superconductivity 7, no. 2 (June 1997): 2925–28. http://dx.doi.org/10.1109/77.621917.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Ortega-Moñux, Alejandro, J. Gonzalo Wangüemert-Pérez, and Iñigo Molina-Fernández. "Adaptive Hermite–Gauss decomposition method to analyze optical dielectric waveguides." Journal of the Optical Society of America A 20, no. 3 (March 1, 2003): 557. http://dx.doi.org/10.1364/josaa.20.000557.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Chen, Chao, Xiang Yong Zhao, Hong Liu, Wen Wei Ge, Hao Su Luo, and Xiang Ping Jiang. "Crystal Growth and Electrical Properties of Na_0.5Bi_0.5TiO₃-BaTiO₃ Lead-Free Ferroelectric Piezocrystals." Key Engineering Materials 421-422 (December 2009): 17–20. http://dx.doi.org/10.4028/www.scientific.net/kem.421-422.17.

Повний текст джерела

Анотація:

(1-x)(Na0.5Bi0.5)TiO3-xBaTiO3 (abbreviated as NBBT100(1-x)/100x or NBBT100x) solid solution single crystals with x=0, 0.06, 0.08, 0.10, 0.20, 1.0 were grown using top-seeded solution growth (TSSG) method. Dielectric, piezoelectric and ferroelectric properties of NBBT crystals were investigated as a function of temperature, frequency, composition and crystal orientation. The temperature (Tm) corresponding to dielectric maximum and the depolarization temperature (Td) decrease with increasing x. The <001> oriented NBBT90/10 single crystal shows excellent piezoelectric performance with piezoelectric constant (d33) value about 275pC/N and exhibits relatively smaller coercive field (Ec) of 2.49 kV/mm and dielectric loss tanδ of 2.9 %, indicating a more adaptive engineered domain structure.

Стилі APA, Harvard, Vancouver, ISO та ін.

13

Addamo, Giuseppe, Giuseppe Virone, Davide Vaccaneo, Riccardo Tascone, Oscar A. Peverini, and Renato Orta. "AN ADAPTIVE CAVITY SETUP FOR ACCURATE MEASUREMENTS OF COMPLEX DIELECTRIC PERMITTIVITY." Progress In Electromagnetics Research 105 (2010): 141–55. http://dx.doi.org/10.2528/pier10042606.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

14

Alsawaf, Hiba A., and Bushra Muhammed Ahmad. "Performance of circular patch microstrip antenna for adaptive modulation and coding applications." Bulletin of Electrical Engineering and Informatics 11, no. 3 (June 1, 2022): 1370–80. http://dx.doi.org/10.11591/eei.v11i3.3402.

Повний текст джерела

Анотація:

The thickness of the substrate is one factor influencing antenna performance. In this paper, the circular patch antenna was designed using rogers RT5880 with dielectric constant of 2.20, loss kept 0.0009 and FR-epoxy with dielectric constant of 4.4, loss kept 0.02. The thickness of the substrate was varied to see how it affected antenna performance, such as return loss. The thickness of the checked substrate is 1.58 mm, which is the standard thickness for rogers RT5880 as well as 2.08 mm, 2.58 mm and 2.85 mm. The simulation work is carried out by ANSYS HFSS software. In this paper, the thicknesses of different substrates are checked while other parameters stay constant and the circular patch radius of the antennas is optimized to achieve a resonant frequency of 3.5 GHz based on the thickness of the above-mentioned substrates used. Return loss, VSWR, gain and half power beam width were found, and the results showed that with the increase in the thickness of the substrate, the gain increases and the value of half power beam width (HPBW) and better results were obtained in the case of RTduroid 5880 and for thicknesses h=2.85 mm

Стилі APA, Harvard, Vancouver, ISO та ін.

15

Yi, Yong, Liming Wang, and Zhengying Chen. "Adaptive global kernel interval SVR-based machine learning for accelerated dielectric constant prediction of polymer-based dielectric energy storage." Renewable Energy 176 (October 2021): 81–88. http://dx.doi.org/10.1016/j.renene.2021.05.045.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

16

D’aloia, Alessandro Giuseppe, Marcello D'Amore, and Maria Sabrina Sarto. "Tunable graphene/dielectric laminate for adaptive low-gigahertz shielding and absorbing screens." IEEE Electromagnetic Compatibility Magazine 7, no. 2 (2018): 82–87. http://dx.doi.org/10.1109/memc.2018.8410687.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

17

Wang, C. C., J. Y. Tan, and L. H. Liu. "Hamiltonian adaptive resolution molecular dynamics simulation of infrared dielectric functions of liquids." Journal of Applied Physics 123, no. 20 (May 28, 2018): 205103. http://dx.doi.org/10.1063/1.5024768.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

18

Amin, Bilal, Atif Shahzad, Martin O’Halloran, and Muhammad Adnan Elahi. "Microwave Bone Imaging: A Preliminary Investigation on Numerical Bone Phantoms for Bone Health Monitoring." Sensors 20, no. 21 (November 5, 2020): 6320. http://dx.doi.org/10.3390/s20216320.

Повний текст джерела

Анотація:

Microwave tomography (MWT) can be used as an alternative modality for monitoring human bone health. Studies have found a significant dielectric contrast between healthy and diseased human trabecular bones. A set of diverse bone phantoms were developed based on single-pole Debye parameters of osteoporotic and osteoarthritis human trabecular bones. The bone phantoms were designed as a two-layered circular structure, where the outer layer mimics the dielectric properties of the cortical bone and the inner layer mimics the dielectric properties of the trabecular bone. The electromagnetic (EM) inverse scattering problem was solved using a distorted Born iterative method (DBIM). A compressed sensing-based linear inversion approach referred to as iterative method with adaptive thresholding for compressed sensing (IMATCS) has been employed for solving the underdetermined set of linear equations at each DBIM iteration. To overcome the challenges posed by the ill-posedness of the EM inverse scattering problem, the L2-based regularization approach was adopted in the amalgamation of the IMATCS approach. The simulation results showed that osteoporotic and osteoarthritis bones can be differentiated based on the reconstructed dielectric properties even for low values of the signal-to-noise ratio. These results show that the adopted approach can be used to monitor bone health based on the reconstructed dielectric properties.

Стилі APA, Harvard, Vancouver, ISO та ін.

19

HE, TIANHU, YANYAN LI, HUIMIN LI, and CHENG CHEN. "OPTIMIZATION DESIGN FOR A DIELECTRIC ELASTOMER MEMBRANE ACTUATOR." International Journal of Computational Materials Science and Engineering 02, no. 01 (March 2013): 1350002. http://dx.doi.org/10.1142/s2047684113500024.

Повний текст джерела

Анотація:

Due to the large voltage-induced strain along with other unique attributes, dielectric elastromers are being developed as transducers for broad applications in soft robots, adaptive structures, medical devices, energy harvesting and so on. Due to nonlinear large deformation and diverse modes of failure, it has been challenging to model dielectric transducers. This paper focuses on the optimization design of an actuator made of a layer of dielectric elastomer membrane and deformed into an out-of plane axisymmetric shape. The optimization procedure is demonstrated by examining the effect of three designing parameters, originated from the pre-stretch of the membrane, on the performance of the actuator, and by determining the region of allowable states in terms of several typical modes of failure. The equations of state are solved numerically by shooting method and the obtained numerical results indicate that the considered variables are sensitive to the designing parameters and that it is feasible to improve the performance of the actuator by choosing the designing parameters judiciously and averting the modes of failure. The approach presented here provides some guidelines in optimizing such actuators.

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Sundriyal, Poonam. "(Digital Presentation) 3D Printing and Laser for Fabrication and Interface Modification of Origami-Inspired Dielectric Elastomer Actuators." ECS Meeting Abstracts MA2022-01, no. 18 (July 7, 2022): 1044. http://dx.doi.org/10.1149/ma2022-01181044mtgabs.

Повний текст джерела

Анотація:

The soft and flexible materials with shape and size adaption characteristics are gaining much attention for many applications, including wearable electronics, biomedical devices, microfluidic systems, tunable optics, soft robotics, and adaptive systems. Despite the several advancements in this area, the automated manufacturing and interface modification of these devices is still a major challenge. Here, we report 3D printing and laser for the rapid and scalable fabrication of dielectric elastomer actuators. The elastomer-based inks of dielectric matrix and electrodes were prepared with desirable rheology to obtain excellent print quality and required mechanical and electrical properties. This process can produce thin and ultrathin layers, porous structures, and interface modification of the device components. The device with printed elastomer patterns exhibited a breakdown strength of 40 V µm-1 at 8 % strain. The finite elemental simulation was also performed to determine the device performance under different strain conditions. The proposed technique is highly beneficial for improving the manufacturing and performance of dielectric elastomer actuators.

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Liu, Haiqiang, Chen Yang, Zhengyun Xu, Ming Lv, and Rougang Zhou. "Improvement of Adaptive Motion Performance in a Flexible Actuator, Based on Electrically Induced Deformation." Actuators 11, no. 11 (November 21, 2022): 338. http://dx.doi.org/10.3390/act11110338.

Повний текст джерела

Анотація:

An actuator built with flexible material has the advantage of smaller size and can withstand certain collisions better than actuators with rigid material. This paper proposes a crawling actuator model driven by dielectric elastomer (DE), which uses the electrically induced deformation of the DE membrane to drive the motion of the actuator. When the dielectric elastomer in the actuator is at higher voltage, the DE material produces higher deformation, and the deformation is transmitted to the ground through the friction foot thus driving the motion of the actuator. An interpolation fitting estimation algorithm (IFEA) was constructed based on the relevant material properties and principles. The pre-stretch length of the DE membrane was determined and verified through experiment; the verified results showed that the actuator has better driving performance when the membrane pre-stretching ratio is equal to 3. The crawling actuator can achieve a speed of about 50 mm/s at 4 kv and can reach 11 mm/s when loaded with four times its weight. The new crawling actuator achieved an excellent turning ability of 8.2°/s at 60% duty cycle and 32 Hz frequency. Compared with other types of crawling actuators, the actuator presented in this work has better load capacity and crawling performance.

Стилі APA, Harvard, Vancouver, ISO та ін.

22

Xie, Bingfang, Zhiqiang Gao, Cong Wang, Luqman Ali, Azeem Muhammad, Fanyi Meng, Cheng Qian, Xumin Ding, Kishor Kumar Adhikari, and Qun Wu. "High-Sensitivity Liquid Dielectric Characterization Differential Sensor by 1-Bit Coding DGS." Sensors 23, no. 1 (December 29, 2022): 372. http://dx.doi.org/10.3390/s23010372.

Повний текст джерела

Анотація:

This paper presents two devices to detect the liquid dielectric characterization. The differential method was used to enhance the robustness and reduce tolerance. A basic sensor based on defected ground structure (DGS) was designed and the optimization for the squares of the DGS via adaptive genetic algorithm was applied to enhance the performance of the microwave sensor, which was shown by the difference of the two resonant frequencies. Furthermore, the electric field distribution was enhanced. Glass microcapillary tubes were used to hold samples to provide an environment of non-invasive. The optimized device exhibited the sensitivity of 0.076, which is more than 1.52 times than the basic structure. It could be considered a sensitive and robust sensor with quick response time for liquid dielectric characterization.

Стилі APA, Harvard, Vancouver, ISO та ін.

23

Buhara, Ebru, Amir Ghobadi, Bahram Khalichi, Hasan Kocer, and Ekmel Ozbay. "Mid-infrared adaptive thermal camouflage using a phase-change material coupled dielectric nanoantenna." Journal of Physics D: Applied Physics 54, no. 26 (April 23, 2021): 265105. http://dx.doi.org/10.1088/1361-6463/abf53d.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

24

Wilson, Emma D., Tareq Assaf, Martin J. Pearson, Jonathan M. Rossiter, Sean R. Anderson, John Porrill, and Paul Dean. "Cerebellar-inspired algorithm for adaptive control of nonlinear dielectric elastomer-based artificial muscle." Journal of The Royal Society Interface 13, no. 122 (September 2016): 20160547. http://dx.doi.org/10.1098/rsif.2016.0547.

Повний текст джерела

Анотація:

Electroactive polymer actuators are important for soft robotics, but can be difficult to control because of compliance, creep and nonlinearities. Because biological control mechanisms have evolved to deal with such problems, we investigated whether a control scheme based on the cerebellum would be useful for controlling a nonlinear dielectric elastomer actuator, a class of artificial muscle. The cerebellum was represented by the adaptive filter model, and acted in parallel with a brainstem, an approximate inverse plant model. The recurrent connections between the two allowed for direct use of sensory error to adjust motor commands. Accurate tracking of a displacement command in the actuator's nonlinear range was achieved by either semi-linear basis functions in the cerebellar model or semi-linear functions in the brainstem corresponding to recruitment in biological muscle. In addition, allowing transfer of training between cerebellum and brainstem as has been observed in the vestibulo-ocular reflex prevented the steady increase in cerebellar output otherwise required to deal with creep. The extensibility and relative simplicity of the cerebellar-based adaptive-inverse control scheme suggests that it is a plausible candidate for controlling this type of actuator. Moreover, its performance highlights important features of biological control, particularly nonlinear basis functions, recruitment and transfer of training.

Стилі APA, Harvard, Vancouver, ISO та ін.

25

Scharf, Toralf, Joël Fontannaz, Manuel Bouvier, and Joachim Grupp. "An Adaptive Microlens Formed by Homeotropic Aligned Liquid Crystal with Positive Dielectric Anisotropy." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 331, no. 1 (August 1999): 235–43. http://dx.doi.org/10.1080/10587259908047521.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

26

Findikoglu, A. T., Q. X. Jia, X. D. Wu, G. J. Chen, T. Venkatesan, and D. W. Reagor. "Tunable and adaptive bandpass filter using a nonlinear dielectric thin film of SrTiO3." Applied Physics Letters 68, no. 12 (March 18, 1996): 1651–53. http://dx.doi.org/10.1063/1.115894.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

27

Cho, Young-Chang, and Wei Shyy. "Adaptive flow control of low-Reynolds number aerodynamics using dielectric barrier discharge actuator." Progress in Aerospace Sciences 47, no. 7 (October 2011): 495–521. http://dx.doi.org/10.1016/j.paerosci.2011.06.005.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

28

Yahya, Noorhana, Chai Mui Nyuk, Ahmad Fauzi Ismail, Nazabat Hussain, Amir Rostami, Atef Ismail, Menaka Ganeson, and Abdullah Musa Ali. "Inversion Algorithm of Fiber Bragg Grating for Nanofluid Flooding Monitoring." Sensors 20, no. 4 (February 13, 2020): 1014. http://dx.doi.org/10.3390/s20041014.

Повний текст джерела

Анотація:

In the current study, we developed an adaptive algorithm that can predict oil mobilization in a porous medium on the basis of optical data. Associated mechanisms based on tuning the electromagnetic response of magnetic and dielectric nanoparticles are also discussed. This technique is a promising method in rational magnetophoresis toward fluid mobility via fiber Bragg grating (FBG). The obtained wavelength shift due to Fe3O4 injection was 75% higher than that of dielectric materials. This use of FBG magneto-optic sensors could be a remarkable breakthrough for fluid-flow tracking in oil reservoirs. Our computational algorithm, based on piecewise linear polynomials, was evaluated with an analytical technique for homogeneous cases and achieved 99.45% accuracy. Theoretical values obtained via coupled-mode theory agreed with our FBG experiment data of at a level of 95.23% accuracy.

Стилі APA, Harvard, Vancouver, ISO та ін.

29

Ewe, W. B., L. W. Li, and M. S. Leong. "Fast Solution of Mixed Dielectric/Conducting Scattering Problem Using Volume-Surface Adaptive Integral Method." IEEE Transactions on Antennas and Propagation 52, no. 11 (November 2004): 3071–77. http://dx.doi.org/10.1109/tap.2004.835147.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

30

Dombrovskaya, Zh O., A. A. Belov, and V. A. Govorukhin. "Adaptive mesh for computation of electromagnetic wave propagation through high refractive index dielectric structures." Journal of Physics: Conference Series 1461 (March 2020): 012031. http://dx.doi.org/10.1088/1742-6596/1461/1/012031.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

31

Bernat, Jakub, and Jakub Kolota. "Adaptive Observer for State and Load Force Estimation for Dielectric Electro-Active Polymer Actuator." IFAC-PapersOnLine 52, no. 16 (2019): 448–53. http://dx.doi.org/10.1016/j.ifacol.2019.12.002.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

32

Wanguemert-Perez, J. G., and I. Molina-Fernandez. "Analysis of dielectric waveguides by a modified Fourier decomposition method with adaptive mapping parameters." Journal of Lightwave Technology 19, no. 10 (2001): 1614–27. http://dx.doi.org/10.1109/50.956149.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

33

Sova, Oleksandr, Victor Reshetnyak, and Tigran Galstian. "Theoretical analyses of a liquid crystal adaptive lens with optically hidden dielectric double layer." Journal of the Optical Society of America A 34, no. 3 (February 24, 2017): 424. http://dx.doi.org/10.1364/josaa.34.000424.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

34

Cao, Laibao, Tao Liu, Mengmeng Shen, Yujun Wang, and Chunlin Huang. "Full-Waveform Inversion for Subsurface Penetrating Radar based on Adaptive Bilateral Total Variation Regularization." Journal of Physics: Conference Series 2187, no. 1 (February 1, 2022): 012043. http://dx.doi.org/10.1088/1742-6596/2187/1/012043.

Повний текст джерела

Анотація:

Abstract Full-waveform inversion (FWI) of subsurface penetrating radar (SPR) is one of the most promising techniques for quantitative reconstruction of high-resolution dielectric properties distribution. However, due to the incomplete observation data of surface detection, there is significant ill-posedness in inversion and the inversion accuracy is lower than expected. In this paper, an FWI method for SPR data with adaptive bilateral total variation (ABTV) regularization is proposed. The method utilizes ABTV regularization to supplement the data constraints and retains the anomaly body boundary information. In addition, the regularization function of adaptive weight factor matrix is designed for the limitation of the standard bilateral total variation (BTV) regularization, which considers both the smoothing effect and the edge preservation effect. Synthetic experiment shows that the proposed method can reconstruct the permittivity distribution more accurately from 2-D SPR data.

Стилі APA, Harvard, Vancouver, ISO та ін.

35

Bikbaev, Rashid G., Ivan V. Timofeev, and Vasiliy F. Shabanov. "Strain Sensor via Wood Anomalies in 2D Dielectric Array." Nanomaterials 11, no. 4 (April 16, 2021): 1022. http://dx.doi.org/10.3390/nano11041022.

Повний текст джерела

Анотація:

Optical sensing is one of many promising applications for all-dielectric photonic materials. Herein, we present an analytical and numerical study on the strain-responsive spectral properties of a bioinspired sensor. The sensor structure contains a two-dimensional periodic array of dielectric nanodisks to mimic the optical behavior of grana lamellae inside chloroplasts. To accumulate a noticeable response, we exploit the collective optical mode in grana ensemble. In higher plants, such a mode appears as Wood’s anomaly near the chlorophyll absorption line to control the photosynthesis rate. The resonance is shown persistent against moderate biological disorder and deformation. Under the stretching or compression of a symmetric structure, the mode splits into a couple of polarized modes. The frequency difference is accurately detected. It depends on the stretch coefficient almost linearly providing easy calibration of the strain-sensing device. The sensitivity of the considered structure remains at 5 nm/% in a wide range of strain. The influence of the stretching coefficient on the length of the reciprocal lattice vectors, as well as on the angle between them, is taken into account. This adaptive phenomenon is suggested for sensing applications in biomimetic optical nanomaterials.

Стилі APA, Harvard, Vancouver, ISO та ін.

36

Guo, Jing-Li, Jian-Ying Li, and Qi-Zhong Liu. "Analysis of arbitrarily shaped dielectric radomes using adaptive integral method based on volume integral equation." IEEE Transactions on Antennas and Propagation 54, no. 7 (July 2006): 1910–16. http://dx.doi.org/10.1109/tap.2006.877157.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

37

Wang, K. C., J. Liu, J. H. Xu, X. T. Fan, and L. R. Zhang. "An adaptive nested complex source beam method for electromagnetic scattering of composite conducting-dielectric objects." Engineering Analysis with Boundary Elements 118 (September 2020): 244–49. http://dx.doi.org/10.1016/j.enganabound.2020.04.011.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

38

Shen, Su, and Jun She. "Design of Multi-layer Dielectric Thin-film Polarizing Beam Splitters by Adaptive Simulated Annealing Method." Optical and Quantum Electronics 37, no. 10 (August 2005): 915–25. http://dx.doi.org/10.1007/s11082-005-1172-x.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

39

Bhattacharya, Prasenjit, Rajat Sinha, Bikash Kumar Thakur, Virendra Parab, Mayank Shrivastava, and Sanjiv Sambandan. "Adaptive Dielectric Thin Film Transistors-A Self-Configuring Device for Low Power Electrostatic Discharge Protection." IEEE Electron Device Letters 41, no. 1 (January 2020): 66–69. http://dx.doi.org/10.1109/led.2019.2956838.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

40

Shen, Hongguang, Zihan He, Wenlong Jin, Lanyi Xiang, Wenrui Zhao, Chong‐an Di, and Daoben Zhu. "Organic Adaptive Transistors: Mimicking Sensory Adaptation with Dielectric Engineered Organic Transistors (Adv. Mater. 48/2019)." Advanced Materials 31, no. 48 (November 2019): 1970342. http://dx.doi.org/10.1002/adma.201970342.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

41

Jański, Ł., M. Scherzer, P. Steinhorst, and M. Kuna. "Adaptive finite element computation of dielectric and mechanical intensity factors in piezoelectrics with impermeable cracks." International Journal for Numerical Methods in Engineering 81, no. 12 (October 13, 2009): 1492–513. http://dx.doi.org/10.1002/nme.2742.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

42

Jandhyala, Vikram, Eric Michielssen, and Raj Mittra. "A memory-efficient, adaptive algorithm for multipole-accelerated capacitance computation in a stratified dielectric medium." International Journal of Microwave and Millimeter-Wave Computer-Aided Engineering 6, no. 6 (November 1996): 381–90. http://dx.doi.org/10.1002/(sici)1522-6301(199611)6:6<381::aid-mmce1>3.0.co;2-t.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

43

Wang, Shaoxi, Yue Yin, and Xiaoya Fan. "The Chip Cooling Model and Route Optimization with Digital Microfluidics." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 37, no. 1 (February 2019): 107–13. http://dx.doi.org/10.1051/jnwpu/20193710107.

Повний текст джерела

Анотація:

Using microfluidic technology to achieve integrated chip cooling is becoming a promising method to extend Moore law effective period. The thermal management is always critical for 3D integrated circuit design. Hot spots due to spatially non-uniform heat flux in integrated circuits can cause physical stress that further reduces reliability. The critical point for chip cooling is to use microfluidic cooling accurately on the hot spots. First, based on electro-wetting on dielectric, the paper presents an adaptive chip cooling technique using the digital microfluidics. Then, a two-plans 3D chip cooling model has been given with its working principle and characteristics. And single plan chip cooling model is presented, including its capacitance performance and models. Moreover, the dentate electrode is designed to achieve droplet continuing movement. Next, the ant colony optimization is adopted to get optimal route during electrode moving. Last, the experiments demonstrate the adaptive chip cooling technique proposed in this paper is effective and efficiency.

Стилі APA, Harvard, Vancouver, ISO та ін.

44

Fabbiane, Nicolò, Shervin Bagheri, and Dan S. Henningson. "Energy efficiency and performance limitations of linear adaptive control for transition delay." Journal of Fluid Mechanics 810 (November 24, 2016): 60–81. http://dx.doi.org/10.1017/jfm.2016.707.

Повний текст джерела

Анотація:

A reactive control technique with localised actuators and sensors is used to delay the transition to turbulence in a flat-plate boundary-layer flow. Through extensive direct numerical simulations, it is shown that an adaptive technique, which computes the control law on-line, is able to significantly reduce skin-friction drag in the presence of random three-dimensional perturbation fields with linear and weakly nonlinear behaviour. An energy budget analysis is performed in order to assess the net energy saving capabilities of the linear control approach. When considering a model of the dielectric-barrier-discharge (DBD) plasma actuator, the energy spent to create appropriate actuation force inside the boundary layer is of the same order as the energy gained from reducing skin-friction drag. With a model of an ideal actuator a net energy gain of three orders of magnitude can be achieved by efficiently damping small-amplitude disturbances upstream. The energy analysis in this study thus provides an upper limit for what we can expect in terms of drag-reduction efficiency for linear control of transition as a means for drag reduction.

Стилі APA, Harvard, Vancouver, ISO та ін.

45

Park, Yeonsang, Hyochul Kim, Jeong-Yub Lee, Woong Ko, Kideock Bae, and Kyung-Sang Cho. "Direction control of colloidal quantum dot emission using dielectric metasurfaces." Nanophotonics 9, no. 5 (June 2, 2020): 1023–30. http://dx.doi.org/10.1515/nanoph-2020-0158.

Повний текст джерела

Анотація:

AbstractOwing to the recent developments of dielectric metasurfaces, their applications have been expanding from those pertaining to the thickness shrinkage of passive optical elements, such as lenses, polarizers, and quarter-wave plates, to applications pertaining to their integration with active optical devices, such as vertical-cavity surface-emitting lasers. Even though directional lasing and beam shaping of laser emission have been successfully demonstrated, the integration of metasurfaces with random light sources, such as light-emitting diodes, is limited because of function and efficiency issues attributed to the fact that metasurfaces are basically based on the resonance property of the nanostructure. To control the direction of emission from colloidal quantum dots, we present a dielectric metasurface deflector composed of two asymmetric TiO2 nanoposts. TiO2 deflector arrays were fabricated with a dry etching method that is adaptive to mass production and integrated with a colloidal quantum dot resonant cavity formed by sandwiching two distributed Bragg reflectors. To ensure the deflection ability of the fabricated sample, we measured the photoluminescence and far-field patterns of emission from the resonant cavity. From the obtained results, we demonstrated that the colloidal quantum dot emission transmitted through our deflector arrays was deflected by 18°, and the efficiency of deflection was 71% with respect to the emission from the resonant cavity. This integration of dielectric metasurfaces with a resonant cavity shows the possibility of expanding the application of visible metasurfaces in active devices and may help to develop next-generation active devices with novel functions.

Стилі APA, Harvard, Vancouver, ISO та ін.

46

Prashanth, P. V. S. H., E. Jayamani, K. H. Soon, and Y. Wong. "Determination of dielectric properties of natural fiber reinforced polymer composite using adaptive neuro fuzzy inference system." Materialwissenschaft und Werkstofftechnik 52, no. 10 (October 2021): 1035–47. http://dx.doi.org/10.1002/mawe.202000304.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

47

Deep, Narasingh, Punyapriya Mishra, and Layatitdev Das. "Application of adaptive neuro-fuzzy inference system (ANFIS) for predicting dielectric characteristics of CNT/PMMA nanocomposites." Materials Today: Proceedings 33 (2020): 5200–5205. http://dx.doi.org/10.1016/j.matpr.2020.02.882.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

48

Nekuee, Seyed Amir Hossein, and Ehsan Faghihifar. "A regularized adaptive spatial resolution technique for fast and accurate analysis of metal–dielectric crossed gratings." Journal of Computational Electronics 18, no. 2 (February 5, 2019): 689–95. http://dx.doi.org/10.1007/s10825-019-01311-9.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

49

Wang, Yingcong, Fei Zeng, Jialu Liu, Qin Wan, Dong Guo, and Yuan Deng. "Adaptive Deformation of Ionic Domains in Hydrogel Enforcing Dielectric Coupling for Sensitive Response to Mechanical Stretching." Advanced Intelligent Systems 2, no. 7 (May 6, 2020): 2000016. http://dx.doi.org/10.1002/aisy.202000016.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

50

Sun, Chi-Hsien, and Chien-Ching Chiu. "Inverse scattering of dielectric cylindrical target using dynamic differential evolution and self-adaptive dynamic differential evolution." International Journal of RF and Microwave Computer-Aided Engineering 23, no. 5 (November 22, 2012): 579–85. http://dx.doi.org/10.1002/mmce.20692.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Статті в журналах з теми "Adaptive Dielectric"

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями