Results 31 to 40 of about 13,719,025 (270)
Near-Field Electrospinning [PDF]
Nano Letters, 2006 A near-field electrospinning (NFES) process has been developed to deposit solid nanofibers in a direct, continuous, and controllable manner. A tungsten electrode with tip diameter of 25 microm is used to construct nanofibers of 50-500 nm line width on silicon-based collectors while the liquid polymer solution is supplied in a manner analogous to that ...
Sun, D. H. +3 more
openaire +3 more sources
BMC Public Health, 2022 Background Due to pre-existing difficulties, refugees are especially susceptible to the negative effects of the pandemic; nonetheless, the pandemic’s effect on this group is still unclear.
Zeina Jamal +9 more
doaj +1 more source
Temporally and Spatially Resolved Reflected Overpressure Measurements in the Extreme Near Field
Sensors, 2023 The design of blast-resistant structures and protective systems requires a firm understanding of the loadings imparted to structures by blast waves. While empirical methods can reliably predict these loadings in the far field, there is currently a lack ...
Andrew D. Barr +4 more
doaj +1 more source
Journal of Modern Optics, 2003 RevTeX, (9 pages, 8 figures)
Ramakrishna, S. Anantha +3 more
openaire +2 more sources
Strong Terahertz Absorption of Monolayer Graphene Embedded into a Microcavity
Nanomaterials, 2021 Terahertz reflection behaviors of metallic-grating-dielectric-metal (MGDM) microcavity with a monolayer graphene embedded into the dielectric layer are theoretically investigated.
Xuguang Guo +10 more
doaj +1 more source
Near-Field Rainbow: Wideband Beam Training for XL-MIMO [PDF]
IEEE Transactions on Wireless Communications, 2022 Wideband extremely large-scale multiple-input-multiple-output (XL-MIMO) plays an important role in boosting the data rate for 6G networks. Because of the huge bandwidth and the large number of antennas, wideband XL-MIMO introduces a significant near ...
Mingyao Cui +4 more
semanticscholar +1 more source
Near-Field Channel Estimation in Mixed LoS/NLoS Environments for Extremely Large-Scale MIMO Systems [PDF]
IEEE Transactions on Communications, 2022 Accurate channel model and channel estimation are essential to empower extremely large-scale MIMO (XL-MIMO) in 6G networks with ultra-high spectral efficiency.
Yu Lu, Linglong Dai
semanticscholar +1 more source
Magnetoelectric Near Fields [PDF]
, 2021 We consider near field topological singularities originated from magnetic dipolar mode oscillations in ferrite disk particles.
openaire +2 more sources
On the Optimal Field Sensing in Near-Field Characterization [PDF]
Sensors, 2021 We deal with the problem of characterizing a source or scatterer from electromagnetic radiated or scattered field measurements. The problem refers to the amplitude and phase measurements which has applications also to interferometric approaches at optical frequencies. From low frequencies (microwaves) to high frequencies or optics, application examples
Capozzoli A., Curcio C., Liseno A.
openaire +4 more sources
Near-Field Wideband Beamforming for Extremely Large Antenna Arrays [PDF]
IEEE Transactions on Wireless Communications, 2021 The natural integration of extremely large antenna arrays (ELAAs) and terahertz (THz) communications can potentially establish Tbps data links for 6G networks. However, due to the extremely large array aperture and wide bandwidth, a new phenomenon termed
Mingyao Cui, Linglong Dai
semanticscholar +1 more source