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Journal articles on the topic 'Near field magnetic enhancement'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Liberal, Iñigo, Yue Li, and Nader Engheta. "Magnetic field concentration assisted by epsilon-near-zero media." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 375, no. 2090 (2017): 20160059. http://dx.doi.org/10.1098/rsta.2016.0059.

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Strengthening the magnetic response of matter at optical frequencies is of fundamental interest, as it provides additional information in spectroscopy, as well as alternative mechanisms to manipulate light at the nanoscale. Here, we demonstrate theoretically that epsilon-near-zero (ENZ) media can enhance the magnetic field concentration capabilities of dielectric resonators. We demonstrate that the magnetic field enhancement factor is unbounded in theory, and it diverges as the size of the ENZ host increases. In practice, the maximal enhancement factor is limited by dissipation losses in the h

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2

Leitão, D. C., I. G. Trindade, R. Fermento, et al. "Magnetic Field Enhancement with Soft Magnetic Flux Guides." Materials Science Forum 587-588 (June 2008): 313–17. http://dx.doi.org/10.4028/www.scientific.net/msf.587-588.313.

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In this work, a study of the sensitivity enhancement of spin valve sensors, when located in close proximity to magnetic flux guides, is presented. The magnetoresistance (MR) of spin-valve sensors, lithographically patterned into stripes with lateral dimensions, (length) l = 500 µm, (width) wsensor = 1, 2, 6 µm and placed near one/two Co93.5Zr2.8Nb3.7 (CZN) magnetic flux guide, is characterized at room temperature. CZN has a high permeability that together with a defined microstructured shape, is able to concentrate the magnetic flux in a small area, leading to an increase in sensor's sensitivi

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3

Sun, T. R., C. Wang, N. L. Borodkova, and G. N. Zastenker. "Geosynchronous magnetic field responses to fast solar wind dynamic pressure enhancements: MHD field model." Annales Geophysicae 30, no. 8 (2012): 1285–95. http://dx.doi.org/10.5194/angeo-30-1285-2012.

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Abstract. We performed global MHD simulations of the geosynchronous magnetic field in response to fast solar wind dynamic pressure (Pd) enhancements. Taking three Pd enhancement events in 2000 as examples, we found that the main features of the total field B and the dominant component Bz can be efficiently predicted by the MHD model. The predicted B and Bz varies with local time, with the highest level near noon and a slightly lower level around mid-night. However, it is more challenging to accurately predict the responses of the smaller component at the geosynchronous orbit (i.e., Bx and By).

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4

Sanz-Fernández, Juan José. "Near-field enhancement for infrared sensor applications." Journal of Nanophotonics 5, no. 1 (2011): 051814. http://dx.doi.org/10.1117/1.3604785.

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5

Lee, Jaejoon, and Jaewook Lee. "Magnetic Force Enhancement Using Air-Gap Magnetic Field Manipulation by Optimized Coil Currents." Applied Sciences 10, no. 1 (2019): 104. http://dx.doi.org/10.3390/app10010104.

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This paper presents an air-gap magnetic field manipulation by optimized coil currents for a magnetic force enhancement in electromechanical devices. The external coil is designed near the device air-gap for manipulating the magnetic field distribution. The distribution of external coil currents is then optimized for maximizing the magnetic force in the tangential direction to the air-gap line. For the optimization, the design domain near air-gap is divided into small areas, and design variables are assigned at each small design area. The design variables determines not only the strength of coi

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Bohn, John L., D. J. Nesbitt, and A. Gallagher. "Field enhancement in apertureless near-field scanning optical microscopy." Journal of the Optical Society of America A 18, no. 12 (2001): 2998. http://dx.doi.org/10.1364/josaa.18.002998.

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7

Kuri, Deep Kumar, Nilakshi Das, and Kartik Patel. "Collimated proton beams from magnetized near-critical plasmas." Laser and Particle Beams 36, no. 3 (2018): 276–85. http://dx.doi.org/10.1017/s0263034618000307.

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AbstractGeneration of collimated proton beams by linearly and circularly polarized (CP) lasers from magnetized near-critical plasmas has been investigated with the help of three-dimensional (3D) particle-in-cell (PIC) simulations. Due to cyclotron effects, the transverse proton momentum gets significantly reduced in the presence of an axial magnetic field which leads to an enhancement in collimation. Collimation is observed to be highest in case of a linearly polarized (LP) laser in the presence of magnetic field. However, protons accelerated by a right CP laser in the presence of magnetic fie

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8

Kallio, E., S. McKenna-Lawlor, M. Alho, R. Jarvinen, S. Dyadechkin, and V. V. Afonin. "Energetic protons at Mars: interpretation of SLED/Phobos-2 observations by a kinetic model." Annales Geophysicae 30, no. 11 (2012): 1595–609. http://dx.doi.org/10.5194/angeo-30-1595-2012.

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Abstract. Mars has neither a significant global intrinsic magnetic field nor a dense atmosphere. Therefore, solar energetic particles (SEPs) from the Sun can penetrate close to the planet (under some circumstances reaching the surface). On 13 March 1989 the SLED instrument aboard the Phobos-2 spacecraft recorded the presence of SEPs near Mars while traversing a circular orbit (at 2.8 RM). In the present study the response of the Martian plasma environment to SEP impingement on 13 March was simulated using a kinetic model. The electric and magnetic fields were derived using a 3-D self-consisten

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9

Ji, Fengtong, Ben Wang, and Li Zhang. "Light-Triggered Catalytic Performance Enhancement Using Magnetic Nanomotor Ensembles." Research 2020 (July 8, 2020): 1–11. http://dx.doi.org/10.34133/2020/6380794.

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Micro/nanomachines have attracted extensive attention in the biomedical and environmental fields for realizing functionalities at small scales. However, they have been rarely investigated as active nanocatalysts. Heterogeneous nanocatalysts have exceptional reusability and recyclability, and integration with magnetic materials enables their recovery with minimum loss. Herein, we propose a model active nanocatalyst using magnetic nanomotor ensembles (MNEs) that can degrade contaminants in an aqueous solution with high catalytic performance. MNEs composed of a magnetite core coated with gold nan

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10

Granitzka, Patrick W., Emmanuelle Jal, Loïc Le Guyader, et al. "Magnetic Switching in Granular FePt Layers Promoted by Near-Field Laser Enhancement." Nano Letters 17, no. 4 (2017): 2426–32. http://dx.doi.org/10.1021/acs.nanolett.7b00052.

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11

Wang, Fang, Yuchen Liu, Qikai Dong, et al. "Enhancement of Enzyme Activity by Alternating Magnetic Field and Near-Infrared Irradiation." Catalysts 15, no. 4 (2025): 386. https://doi.org/10.3390/catal15040386.

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The enhancement of enzyme activity has garnered significant attention in biotransformation processes and applications. This enhancement is achieved through the use of specific nanomaterials (NMs) with unique physicochemical characteristics responsive to external stimuli. In this study, an enzyme–Fe3O4 nano-biocatalytic system (NBS) was developed to enable real-time activation of enzymatic catalysis under alternating magnetic field (AMF) and near-infrared (NIR) irradiation using dual-functional Fe3O4 magnetic nanoparticles (MNPs). When exposed to an AMF, Fe3O4 MNPs generate molecular vibrations

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12

Aksyuk, Vladimir, Basudev Lahiri, Glenn Holland, and Andrea Centrone. "Near-field asymmetries in plasmonic resonators." Nanoscale 7, no. 8 (2015): 3634–44. http://dx.doi.org/10.1039/c4nr06755j.

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13

Li, Jianmei, Zirui Guo, Pinxu Li, et al. "Magnetic Fano resonance enhanced second-harmonic generation in chiral hybrid bismuth halides." Applied Physics Letters 122, no. 9 (2023): 091701. http://dx.doi.org/10.1063/5.0137254.

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Magnetic Fano resonance provides a potential opportunity to control both linearity and nonlinearity of light for their low radiation loss and near-field enhancement. Previous investigations have demonstrated its significant enhancement of nonlinearity in a plasmonic structure and the 2D materials coupled to it. In this work, the enhancement of second harmonic generation (SHG) of hybrid bismuth halides at the important communication wavelength of 1550 nm with a magnetic Fano dip is theoretically studied. To this end, a hybrid system composed of two asymmetric silver square split rings (SSRs) an

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14

Furukawa, Hiromitsu, and Satoshi Kawata. "Local field enhancement with an apertureless near-field-microscope probe." Optics Communications 148, no. 4-6 (1998): 221–24. http://dx.doi.org/10.1016/s0030-4018(97)00687-1.

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15

Encina, Ezequiel R., and Eduardo A. Coronado. "Near Field Enhancement in Ag Au Nanospheres Heterodimers." Journal of Physical Chemistry C 115, no. 32 (2011): 15908–14. http://dx.doi.org/10.1021/jp205158w.

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16

Rai, V. N., M. Shukla, and H. C. Pant. "Some studies on picosecond laser produced plasma expanding across a uniform external magnetic field." Laser and Particle Beams 16, no. 3 (1998): 431–43. http://dx.doi.org/10.1017/s0263034600011265.

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Some characteristics of the picosecond laser produced plasma expanding across an externally applied magnetic field (0.6T) have been reported. Two to three times enhancement in X-ray emission from copper plasma has been observed for the laser intensity range ∼5 X 1011 to 5 X 1012 W/cm2. The X-ray yield has been found to increase with an increase in the magnetic field intensity. Enhancement in X-ray emission is correlated with confinement of expanding plasma either in external magnetic field or in high ambient gas pressure. Generation of some highfrequency instability and fast ions was also obse

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17

Wood, A. G., S. E. Pryse, H. R. Middleton, and V. S. C. Howells. "Multi-instrument observations of nightside plasma patches under conditions of IMF <I>B<sub>z</sub></I> positive." Annales Geophysicae 26, no. 8 (2008): 2203–16. http://dx.doi.org/10.5194/angeo-26-2203-2008.

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Abstract. Results are presented from two multi-instrument case studies showing patches of cold, long-lived plasma in the winter nightside ionosphere during times when the z-component of the Interplanetary Magnetic Field (IMF Bz) was positive. These enhancements were coincident with the antisunward convective plasma drift, flowing from polar to nightside auroral latitudes. In the first case, on 5 December 2005 with IMF By negative, two regions of enhanced electron density were observed extended in MLT in the magnetic midnight sector separated by lower densities near midnight. It is likely that

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18

Gosciniak, Jacek, Marcus Mooney, Mark Gubbins, and Brian Corbett. "Novel droplet near-field transducer for heat-assisted magnetic recording." Nanophotonics 4, no. 4 (2015): 503–10. http://dx.doi.org/10.1515/nanoph-2015-0031.

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AbstractTwo main ingredients of plasmonics are surface plasmon polaritons (SPP) and localized surface plasmon resonances (LSPR) as they provide a high degree of concentration of electromagnetic fields in the vicinity of metal surfaces, which is well beyond that allowed by the diffraction limit of optics. Those properties have been used in the new technique of heat assisted magnetic recording (HAMR) to overcome an existing limit of conventional magnetic recording by utilizing a near-field transducer (NFT). The NFT designs are based on excitation of surface plasmons on a metal structure, which r

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19

Foster, J. C., and W. Rideout. "Storm enhanced density: magnetic conjugacy effects." Annales Geophysicae 25, no. 8 (2007): 1791–99. http://dx.doi.org/10.5194/angeo-25-1791-2007.

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Abstract. In the early phases of a geomagnetic storm, the low and mid-latitude ionosphere are greatly perturbed. Large SAPS electric fields map earthward from the perturbed ring current overlapping and eroding the outer plasmasphere and mid-latitude ionosphere, drawing out extended plumes of storm enhanced density (SED). We use combined satellite and ground-based observations to investigate the degree of magnetic conjugacy associated with specific features of the stormtime ionospheric perturbation. We find that many ionospheric disturbance features exhibit degrees of magnetic conjugacy and sim

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20

Biswas, Debabrata, Gaurav Singh, Shreya G. Sarkar, and Raghwendra Kumar. "Variation of field enhancement factor near the emitter tip." Ultramicroscopy 185 (February 2018): 1–4. http://dx.doi.org/10.1016/j.ultramic.2017.10.016.

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21

Zhilyaev, I. N. "Enhancement of electromagnetic oscillations in bismuth by heat flux." Low Temperature Physics 19, no. 12 (1993): 960–61. https://doi.org/10.1063/10.0033557.

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The passage of heat flux through perfect single crystals of bismuth in a transverse magnetic field at liquid helium temperatures leads to an amplification of electromagnetic oscillations excited near the end-face of sample. This phenomenon is explained on the basis of Azbel’s instability model.

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22

Choi, Soo Bong, Doo Jae Park, Sun Jung Byun, Jisoo Kyoung, and Sung Woo Hwang. "Near-Zero Index: Optical Magnetic Mirror for Field Enhancement and Subwavelength Imaging Applications." Advanced Optical Materials 3, no. 12 (2015): 1719–25. http://dx.doi.org/10.1002/adom.201500294.

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23

Tu, C. Y., E. Marsch, K. Ivory, and R. Schwenn. "Pressure enhancement associated with meridional flow in high-speed solar wind: possible evidence for an interplanetary magnetic flux rope." Annales Geophysicae 15, no. 2 (1997): 137–42. http://dx.doi.org/10.1007/s00585-997-0137-8.

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Abstract. A sizable total-pressure (magnetic pressure plus kinetic pressure) enhancement was found within the high-speed wind stream observed by Helios 2 in 1976 near 0.3 AU. The proton density and temperature and the magnetic magnitude simultaneously increased for about 6 h. This pressure rise was associated with a comparatively large southward flow velocity component (with Vz ≈ –100 km · s–1) and magnetic-field rotation. The pressure enhancement was associated with unusual features in the electron distribution function. It shows a wide angular distribution of electron counting rates in the l

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24

LIU, S. Q., and X. Q. LI. "Numerical analysis of self-generated magnetic field excited by transverse plasmons in a laser-produced plasma." Journal of Plasma Physics 66, no. 4 (2001): 223–38. http://dx.doi.org/10.1017/s0022377801001210.

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Abstract. We study numerically the collapse behavior of self-generated magnetic fields described by the nonlinear coupling equations in laser-produced plasmas. The results show that magnetic fields self-generated by transverse pumping plasmons near critical points may collapse, leading to the enhancement of magnetic fields about up to 0.18 MG and 1.8 MG at laser irradiances of 1012 W cm−2 and 1016 W cm−2 respectively, which are similar to the experimental results.

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25

KAWATA, SATOSHI, TARO ICHIMURA, NORIHIKO HAYAZAWA, YASUSHI INOUYE, and MAMORU HASHIMOTO. "TIP-ENHANCED NEAR-FIELD CARS MICROSCOPY." Journal of Nonlinear Optical Physics & Materials 13, no. 03n04 (2004): 593–99. http://dx.doi.org/10.1142/s0218863504002341.

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We apply the field enhancement effect due to plasmon polariton excitation on a metallic nanostructure in order to improve the diffraction limited spatial resolution of coherent anti-Stokes Raman scattering (CARS) microscopy. A cantilever probe tip coated with a 25 nm-thick gold film is utilized as a near-field light source to locally excite the CARS polarizations near the tip. Our CARS microscope has effectively enhanced the CARS signals and realized vibrational imaging of single-wall carbon nanotubes (SWNTs) beyond the spatial resolution of far-field CARS microscopy.

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26

Keszthelyi, Z., G. Meynet, C. Georgy, G. A. Wade, V. Petit, and A. David-Uraz. "The effects of surface fossil magnetic fields on massive star evolution: I. Magnetic field evolution, mass-loss quenching, and magnetic braking." Monthly Notices of the Royal Astronomical Society 485, no. 4 (2019): 5843–60. http://dx.doi.org/10.1093/mnras/stz772.

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Abstract Surface magnetic fields have a strong impact on stellar mass loss and rotation and, as a consequence, on the evolution of massive stars. In this work, we study the influence of an evolving dipolar surface fossil magnetic field with an initial field strength of 4 kG on the characteristics of 15 M⊙ solar metallicity models using the Geneva stellar evolution code. Non-rotating and rotating models considering two different scenarios for internal angular momentum transport are computed, including magnetic field evolution, mass-loss quenching, and magnetic braking. Magnetic field evolution

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27

Das, Barnali, Poonam Chandra, Matt E. Shultz, and Gregg A. Wade. "The fifth main-sequence magnetic B-type star showing coherent radio emission: Is this really a rare phenomenon?" Monthly Notices of the Royal Astronomical Society: Letters 489, no. 1 (2019): L102—L107. http://dx.doi.org/10.1093/mnrasl/slz137.

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ABSTRACT We report the discovery of intense, highly directional radio emission from the Bp star HD 35298, which we interpret as the consequence of Electron Cyclotron Maser Emission (ECME). The star was observed with the Giant Metrewave Radio Telescope near the rotational phases of both magnetic nulls in band 4 (550–750 MHz) and one of the nulls in band 5 (1060–1460 MHz). In band 4, we observed flux density enhancement in both circular polarizations near both magnetic nulls. The sequences of arrival of the left and right circularly polarized pulses are opposite near the two nulls. In band 5, we

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Pint�r, S., K. Kecsem�ty, and A. Varga. "Unusual enhancement of galactic cosmic-ray intensity near an interplanetary magnetic field annihilation region." Solar Physics 106, no. 1 (1986): 201–4. http://dx.doi.org/10.1007/bf00161363.

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29

Belenkaya, E. S., I. I. Alexeev, and C. R. Clauer. "Magnetic field of the transition current system: dawn-dusk asymmetry." Annales Geophysicae 25, no. 8 (2007): 1899–911. http://dx.doi.org/10.5194/angeo-25-1899-2007.

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Abstract. In this paper we consider the interactions of coronal mass ejections (CMEs) with the Earth's magnetosphere for the specific case in which there is a sharp increase in the dynamic pressure (interplanetary shock) that is associated with a simultaneous northward turning of the interplanetary magnetic field (IMF) from the near horizontal direction. Previously, we have shown that under such circumstances, the so-called transition current systems arise. These temporary high-latitude current systems create a low-latitude asymmetric magnetic field on the ground with a large northward field e

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30

Mignuzzi, Sandro, Fumin Huang, Debdulal Roy, and David Richards. "Near-Field Raman Enhancement of Single Molecules and Point Scatterers." Journal of Physical Chemistry C 121, no. 34 (2017): 18800–18806. http://dx.doi.org/10.1021/acs.jpcc.7b03965.

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31

Proctor, Matthew, Xiaofei Xiao, Richard V. Craster, Stefan A. Maier, Vincenzo Giannini, and Paloma Arroyo Huidobro. "Near- and Far-Field Excitation of Topological Plasmonic Metasurfaces." Photonics 7, no. 4 (2020): 81. http://dx.doi.org/10.3390/photonics7040081.

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The breathing honeycomb lattice hosts a topologically non-trivial bulk phase due to the crystalline-symmetry of the system. Pseudospin-dependent edge states, which emerge at the interface between trivial and non-trivial regions, can be used for the directional propagation of energy. Using the plasmonic metasurface as an example system, we probe these states in the near- and far-field using a semi-analytical model. We provide the conditions under which directionality was observed and show that it is source position dependent. By probing with circularly-polarised magnetic dipoles out of the plan

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32

Liu, Nian, Ju Jing, Qiang Hu, Satoshi Inoue, and Haimin Wang. "The Initiation and Back-reaction of the X5.4 Flare on 2012 March 7." Astrophysical Journal 946, no. 2 (2023): 64. http://dx.doi.org/10.3847/1538-4357/acbc15.

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Abstract In this paper, we study the evolution of the X5.4 flare (SOL2012-03-07T00:02) in NOAA Active Region 11429, focusing on its initiation mechanisms and back-reaction effects. To help our study, three-dimensional (3D) coronal magnetic field models are extrapolated from the photospheric magnetograms of the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory under the assumptions of nonlinear force-free field (NLFFF) and non-force-free field (non-FFF). We investigate the 3D magnetic structure and MHD kink instability, torus instability, and double-arc instability (DAI),

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33

Wada, Kengo, Masayuki Kaneda, and Kazuhiko Suga. "Rayleigh-Bénard Convection of Paramagnetic Liquid under a Magnetic Field from Permanent Magnets." Symmetry 12, no. 3 (2020): 341. http://dx.doi.org/10.3390/sym12030341.

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The convection control is important in terms of the heat transfer enhancement and improvement of the applied devices and resultant products. In this study, the convection control by a magnetic field from block permanent magnets is numerically investigated on the Rayleigh-Bénard convection of paramagnetic fluid. To enhance the magnetic force from the available permanent magnets, pairs of alternating-pole magnets are employed and aligned near the bottom heated wall. The lattice Boltzmann method is employed for the computation of the heat and fluid flow with the consideration of buoyancy and magn

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34

Zhang, Bo, Kun Zhang, Lu Lu, Jinlin Song, Zixue Luo, and Qiang Cheng. "Strong enhancement of near-field radiative heat transfer between anisotropic magneto-optical gratings by a weak magnetic field." International Communications in Heat and Mass Transfer 151 (February 2024): 107251. http://dx.doi.org/10.1016/j.icheatmasstransfer.2024.107251.

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35

Wu, DaJian, HaiQun Yu, Jie Yao, QingYu Ma, Ying Cheng, and XiaoJun Liu. "Efficient Magnetic Resonance Amplification and Near-Field Enhancement from Gain-Assisted Silicon Nanospheres and Nanoshells." Journal of Physical Chemistry C 120, no. 24 (2016): 13227–33. http://dx.doi.org/10.1021/acs.jpcc.6b03871.

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Tsunomura, S. "Numerical analysis of global ionospheric current system including the effect of equatorial enhancement." Annales Geophysicae 17, no. 5 (1999): 692–706. http://dx.doi.org/10.1007/s00585-999-0692-2.

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Abstract. A modeling method is proposed to derive a two-dimensional ionospheric layer conductivity, which is appropriate to obtain a realistic solution of the polar-originating ionospheric current system including equatorial enhancement. The model can be obtained by modifying the conventional, thin shell conductivity model. It is shown that the modification for one of the non-diagonal terms (Σθφ) in the conductivity tensor near the equatorial region is very important; the term influences the profile of the ionospheric electric field around the equator drastically. The proposed model can reprod

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37

Ueda, Kentaro, Jun Fujioka, Naoya Kanazawa, and Yoshinori Tokura. "Large magneto-thermoelectric effect on the verge of metal–insulator and topological transitionsin pyrochlore iridates." APL Materials 10, no. 9 (2022): 091111. http://dx.doi.org/10.1063/5.0097460.

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We investigate the Seebeck and Nernst effects of pyrochlore iridium oxides (Nd1− xPr x)2Ir2O7 across the thermally induced and magnetic field-induced metal–insulator and topological transitions. Nd2Ir2O7 exhibits the salient temperature dependence of the Seebeck coefficient accompanied by the enhancement of the Nernst effect in the vicinity of the thermal magnetic transitions. Moreover, the Seebeck coefficient shows a remarkable magnetic field hysteresis with the differential magnitude reaching as large as 110 μV/K, as the conductive magnetic domain walls are generated/annihilated by the exter

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38

Liu, Wenlong, Xiangliang Kong, Fan Guo, et al. "Effects of Coronal Magnetic Field Configuration on Particle Acceleration and Release during the Ground Level Enhancement Events in Solar Cycle 24." Astrophysical Journal 954, no. 2 (2023): 203. http://dx.doi.org/10.3847/1538-4357/ace9d2.

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Abstract Ground level enhancements (GLEs) are extreme solar energetic particle (SEP) events that are of particular importance in space weather. In solar cycle 24, two GLEs were recorded on 2012 May 17 (GLE 71) and 2017 September 10 (GLE 72), respectively, using a range of advanced modern instruments. Here we conduct a comparative analysis of the two events by focusing on the effects of large-scale magnetic field configuration near active regions on particle acceleration and release. Although the active regions are both located near the western limb, temporal variations of SEP intensities and e

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Weaver, Katherine E., Fei Wang, and Akhlesh Lakhtakia. "Enhancement of near-field phase-shifting contact lithography by immersion technique." Optik 117, no. 4 (2006): 183–87. http://dx.doi.org/10.1016/j.ijleo.2005.08.007.

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40

Varyukhin, V. N., Yu V. Gomenyuk, V. Z. Lozovskii, V. S. Lysenko та I. P. Tyagul’ski. "Superconductivity enhancement at the surface of Y1–xPrxBa2Cu3O7–δ ceramic in strong electric fields". Soviet Journal of Low Temperature Physics 18, № 12 (1992): 913–16. https://doi.org/10.1063/10.0033325.

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We studied the effect of an electrostatic field applied to the surface of ceramic samples of the high-TcY1–xPrxBa2Cu3O7–δ (x = 0.1–0.4) in a metal-insulator structure on the transition temperature to the superconducting state, Tc, as well as on the temperature dependence of the critical magnetic field Hc2 near Tc. An enhancement of superconducting properties under the action of a negative field was found. The results are explained as being due to a field-induced enrichment of the sample surface in charge carriers and in local piezoelectric stresses in the subsurface layer.

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41

Xu, Guangye, and Kazuhiko Iwai. "Micro-Scale Flow Excitation under Imposition of Uniform Magnetic Field and Electrical Current." Metals 12, no. 12 (2022): 2034. http://dx.doi.org/10.3390/met12122034.

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Mass transfer is often the rate-determining step for solid-liquid chemical reactions. Decreasing the concentration boundary layer thickness is essential to intensify the chemical reaction. Because the concentration boundary layer exists in the velocity boundary layer, forcing imposition on the concentration boundary layer by superimposing an electrical current and a magnetic field was proposed. Through this, flow can be directly excited in the concentration boundary layer. The previous results indicate that by superimposing a direct current and a gradient magnetic field, the development of the

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42

Lekner, John. "Near approach of two conducting spheres: Enhancement of external electric field." Journal of Electrostatics 69, no. 6 (2011): 559–63. http://dx.doi.org/10.1016/j.elstat.2011.07.009.

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43

Chen, Xu, Yuqian Wang, Zhiwei Guo, et al. "Significant enhancement of magnetic shielding effect by using the composite metamaterial composed of mu-near-zero media and ferrite." EPJ Applied Metamaterials 8 (2021): 13. http://dx.doi.org/10.1051/epjam/2021008.

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The magnetic shield plays an important role in magnetic near-field control. However, the requirements of efficiency, ultra thinness, lightness and cheapness are still the challenges. Here, we firstly propose a composite metamaterial in which the mu-near-zero media is covered with a ferrite slab. We verify that this structure can enhance the shielding effectiveness (SE) in a small area. Furthermore, we optimize the magnetic path by changing the bulk ferrite slab into a patterned slab. In this way, significant SE enhancement can be achieved in a large area. Experimental results show that the max

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Wang, Puqun, Sara Azimi, Mark B. H. Breese, and Marius Peters. "Near-field enhancement of periodic nanostructures for photovoltaic applications: a theoretical study." Journal of Optics 16, no. 12 (2014): 125012. http://dx.doi.org/10.1088/2040-8978/16/12/125012.

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Wang, Xinghua, Yunbao Zheng, Min Ouyang, Haihua Fan, Qiaofeng Dai, and Haiying Liu. "Dual-Wavelength Forward-Enhanced Directional Scattering and Second Harmonic Enhancement in Open-Hole Silicon Nanoblock." Nanomaterials 12, no. 23 (2022): 4259. http://dx.doi.org/10.3390/nano12234259.

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Nanostructures with appropriate sizes can limit light-matter interaction and support electromagnetic multipole resonance. The interaction between light and nanostructures is intimately related to manipulating the direction of scattered light in the far field as well as the electromagnetic field in the near field. In this paper, we demonstrate dual-wavelength directional forward-scattering enhancement in an individual open-hole silicon nanoblock (OH-SiNB) and simultaneously achieve bulk and surface electromagnetic field localization. The second harmonic generation is enhanced using electromagne

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Douas, Maysoun, Manuel I. Marqués, and Pedro A. Serena. "Optical image contrast enhancement in near-field optics induced by water condensation." Ultramicroscopy 135 (December 2013): 50–55. http://dx.doi.org/10.1016/j.ultramic.2013.05.021.

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Sharma, S., P. Galav, N. Dashora, and R. Pandey. "Longitudinal study of the ionospheric response to the geomagnetic storm of 15 May 2005 and manifestation of TADs." Annales Geophysicae 29, no. 6 (2011): 1063–70. http://dx.doi.org/10.5194/angeo-29-1063-2011.

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Abstract. Response of low latitude ionosphere to the geomagnetic storm of 15 May 2005 has been studied using total electron content (TEC) data, obtained from three GPS stations namely, Yibal, Udaipur and Kunming situated near the northern crest of equatorial ionization anomaly at different longitudes. Solar wind parameters, north-south component of the interplanetary magnetic field (IMF Bz) and AE index data have been used to infer the strength of the geomagnetic storm. A large value of eastward interplanetary electric field at 06:15 UT, during the time of maximum southward IMF Bz has been use

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Lim, Dong-Soo, Hyun-Suk Oh, and Young-Joo Kim. "Near-Field Optical Coupling and Enhancement in Surface Plasmon Assisted Media for Heat Assisted Magnetic Recording." Japanese Journal of Applied Physics 48, no. 3 (2009): 03A059. http://dx.doi.org/10.1143/jjap.48.03a059.

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Wang, Chu, Yu, Gao, and Peng. "Near-Field Enhancement and Polarization Selection of a Nano-System for He-Ne Laser Application." Nanomaterials 9, no. 10 (2019): 1421. http://dx.doi.org/10.3390/nano9101421.

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In this paper, we focus on transmission behavior based on the single aperture with a scatter. Both the near-field enhancement and polarization selection can be achieved numerically with a proposed nano-system under He-Ne laser wavelength. The nano-system consists of an Ag antenna, a wafer layer, an Ag film with an aperture and a dielectric substrate. Numerical results show that the near-field enhancement is related to the FP-like resonance base on surface plasmon polaritons (SPPs) in the metal–isolator–metal (MIM) waveguide for transverse magnetic (TM) polarization. The near-field optical spot

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Belova, E., S. Kirkwood, and H. Tammet. "The effect of magnetic substorms on near-ground atmospheric current." Annales Geophysicae 18, no. 12 (2000): 1623–29. http://dx.doi.org/10.1007/s00585-001-1623-z.

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Abstract. Ionosphere-magnetosphere disturbances at high latitudes, e.g. magnetic substorms, are accompanied by energetic particle precipitation and strong variations of the ionospheric electric fields and currents. These might reasonably be expected to modify the local atmospheric electric circuit. We have analysed air-earth vertical currents (AECs) measured by a long wire antenna at Esrange, northern Sweden during 35 geomagnetic substorms. Using superposed epoch analysis we compare the air-earth current variations during the 3 h before and after the time of the magnetic X-component minimum wi

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