Results 131 to 140 of about 13,719,025 (270)

Accurate Phase Calibration of Multistatic Imaging System for Medical and Industrial Applications

open access: yesApplied Sciences
Multistatic imaging systems are commonly used in radar systems and microwave imaging. In these systems, many antennas are arranged three-dimensionally and connected to RF switches.
Hiroshi Tabata   +2 more
doaj   +1 more source

O-FIB: far-field-induced near-field breakdown for direct nanowriting in an atmospheric environment

open access: yesLight: Science & Applications, 2020
Nanoscale surface texturing, drilling, cutting, and spatial sculpturing, which are essential for applications, including thin-film solar cells, photonic chips, antireflection, wettability, and friction drag reduction, require not only high accuracy in ...
Zhen-ze Li   +6 more
semanticscholar   +1 more source

Smarandache near-rings [PDF]

open access: yes, 2002
The main concern of this book is the study of Smarandache analogue properties of near-rings and Smarandache near-rings; so it does not promise to cover all concepts or the proofs of all ...
Vasantha, Kandasamy
core   +1 more source

[Grant application] Near-field Acoustical Holography - a new sensor concept for methods of active noise reduction [PDF]

open access: yes
Anlage A: 'Beschreibung des Vorhabens' zum Forschungsantrag an die Deutsche Forschungsgemeinschaft (DFG)The research hypothesis of the project comprises the development process of a sensor principle based on near-field acoustical holography for active ...
Ungnad, Steffen
core   +1 more source

Near-Field Engineering in RIS-Aided Links: Beamfocusing Analytical Performance Assessment

open access: yesIEEE Access
Reconfigurable intelligent surfaces (RISs) are typically utilized in the far-field as an effective means of creating virtual line-of-sight (LOS) links to mediate non-LOS propagation in wireless communications via beamforming. Owing to their large surface
Sotiris Droulias   +2 more
doaj   +1 more source

IDENTIFIKASI STRUKTUR DASAR SMARANDACHE NEAR-RING

open access: yesBarekeng, 2013
Penelitian ini membahas identifikasi struktur-struktur tersebut melalui definisi dan teorema dengan tahapan sebagai berikut : mengidentifikasi struktur ring dan perkembangannya seperti lapangan, near-ring dan near-field, mengidentifikasi struktur dasar ...
Yohana Y. Bakarbessy   +2 more
doaj   +1 more source

Depth Prediction Improvement for Near-Field iToF Lidar in Low-Speed Motion State

open access: yesSensors
Current deep learning-based phase unwrapping techniques for iToF Lidar sensors focus mainly on static indoor scenarios, ignoring motion blur in dynamic outdoor scenarios.
Mena Nagiub   +4 more
doaj   +1 more source

Assessing the plasmonics of gold nano-triangles with higher order laser modes

open access: yesBeilstein Journal of Nanotechnology, 2012
Regular arrays of metallic nano-triangles – so called Fischer patterns – are fabricated by nano-sphere lithography. We studied such gold nano-triangle arrays on silicon or glass substrates.
Laura E. Hennemann   +7 more
doaj   +1 more source

Photoconductive NSOM for mapping optoelectronic phases in nanostructures

open access: yesNanophotonics, 2014
The advent of optically functional materials with low-intensive processing methods is accompanied by a growing need for high resolution imaging to probe the inherent inhomogeneities in the underlying microstructure.
Das Anshuman J.   +2 more
doaj   +1 more source

Acoustic Field Characterization of Medical Array Transducers Based on Unfocused Transmits and Single-Plane Hydrophone Measurements

open access: yesSensors, 2019
Medical ultrasonic arrays are typically characterized in controlled water baths using measurements by a hydrophone, which can be translated with a positioning stage.
Torben Marhenke   +5 more
doaj   +1 more source

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