Results 31 to 40 of about 496,345 (292)

Epitaxial growth and surface reconstruction of CrSb(0001) [PDF]

, 2019
Smooth CrSb(0001) films have been grown by molecular beam epitaxy on MnSb(0001) – GaAs(111) substrates. CrSb(0001) shows (2 × 2), triple domain (1 × 4) and (√3×√3)R30° reconstructed surfaces as well as a (1 × 1) phase. The dependence of reconstruction on
Aldous, James D., Bell, Gavin R., Burrows, Christopher W.   +2 more
core   +1 more source

Vibration of a Laminated Beam with a Delamination Including Contact Effects

Shock and Vibration, 2004
Certain results are presented in this paper on damped vibration of a laminated cantilever beam with a single closing delamination. In order to investigate this task the finite element method has been applied in the current study.
W. Ostachowicz, A. Żak
doaj   +1 more source

Two-dimensional structures of ferroelectric domain inversion in LiNbO3 by direct electron beam lithography

, 2003
We report on the fabrication of domain-reversed structures in LiNbO3 by means of direct electron beam lithography at room temperature without any static bias.
C. H. Kang, H. Z. Zhang, J. He, Nakao A., P. Dong, S. H. Tang, W. X. Sun, Y. Q. Qin, Z. X. Shen   +8 more
core   +1 more source

Dual beam heterodyne Fourier domain optical coherence tomography

Optics Express, 2007
We report on a novel method combining achromatic complex FDOCT signal reconstruction with a common path and dual beam configuration. The complex signal reconstruction allows resolving the complex ambiguity of the Fourier transform and to enhance the achievable depth range by a factor of two. The dual beam configuration shares the property of high phase
Adrian H, Bachmann, Roland, Michaely, Theo, Lasser, Rainer A, Leitgeb   +3 more
openaire   +2 more sources

Concurrent Multi-Beam Digital Predistortion Using FFT Beamforming and Virtual Arrays

Sensors
A digital predistortion (DPD) scheme for concurrent multi-beam transmission in fully digital multiple-input, multiple-output (MIMO) systems, using Fast Fourier Transform (FFT) beamforming and so-called virtual-array processing, is proposed.
Björn Langborn, Christian Fager, Rui Hou, Thomas Eriksson   +3 more
doaj   +1 more source

Cascaded domain engineering optical phased array for 2D beam steering

Nanophotonics, 2023
The current approach to 2D optical phased array (OPA) encounters challenges, such as the requirement for a highly tunable laser that is incompatible with certain 2D beam-steering applications or significant power consumption, large antenna spacing and ...
Li Jingwei, Zheng Huaibin, He Yuchen, Liu Yanyan, Wei Xiaoyong, Xu Zhuo   +5 more
doaj   +1 more source

Pattern Division Multiple Access with Large-scale Antenna Array

, 2017
In this paper, pattern division multiple access with large-scale antenna array (LSA-PDMA) is proposed as a novel non-orthogonal multiple access (NOMA) scheme.
Jiang, Yanxiang, Kang, Shaoli, Li, Peng, You, Xiaohu, Zheng, Fuchun   +4 more
core   +1 more source

Across-Beam Signal Integration Approach with Ubiquitous Digital Array Radar for High-Speed Target Detection

Remote Sensing
Ubiquitous digital array radar (UDAR) extends the integration time of moving targets by deploying a wide transmitting beam and multiple narrow receiving beams to cover the entire observed airspace.
Le Wang, Haihong Tao, Aodi Yang, Fusen Yang, Xiaoyu Xu, Huihui Ma, Jia Su   +6 more
doaj   +1 more source

Passivity-based boundary control for vibration suppression of the shear beam

Advances in Mechanical Engineering, 2022
In this paper, the passivity-based boundary controller for the vibration suppression of the flexible beam is studied. The undamped shear beam model is used as a beam model.
Nipon Boonkumkrong, Sinchai Chinvorarat, Pichai Asadamongkon   +2 more
doaj   +1 more source

Isotope separation using tuned laser and electron beam [PDF]

, 1987
The apparatus comprises means for producing an atomic beam containing the isotope of interest and other isotopes. Means are provided for producing a magnetic field traversing the path of the atomic beam of an intensity sufficient to broaden the energy ...
Trajmar, Sandor
core   +1 more source