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An Impedance Controller for Surface Alignment
Proceedings of the 4th International Conference on Control, Mechatronics and Automation, 2016This paper present a human-inspired compliant surface to surface alignment method for robotic manipulators. The surface alignment task is break down into several stages, a) make a point contact, b) alignment of point-contact to line-contact, and finally c) surface to surface alignment.
YuanRui Yang +2 more
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Surface Impedance Imaging Technique
Analytical Chemistry, 2008We demonstrate here a surface impedance imaging technique based on sensitive dependence of surface plasmon resonance (SPR) on local surface charge density. By applying a potential modulation to a sensor surface, we are able to simultaneously obtain three images: the dc component and the amplitude and phase of the ac component.
Kyle J, Foley, Xiaonan, Shan, N J, Tao
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Surface impedance of antiferromagnetic superconductors
Physics Letters A, 1979Abstract The dependence of the low-frequency surface impedance on the types of magnetic configurations induced by an external field in an antiferromagnetic superconductor is given.
Krzysztoń, T. +2 more
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Electrochemical Impedance Imaging on Conductive Surfaces
Analytical Chemistry, 2021Electrochemical impedance spectroscopy (EIS) is a powerful tool to measure and quantify the system impedance. However, EIS only provides an average result from the entire electrode surface. Here, we demonstrated a reflection impedance microscope (RIM) that allows us to image and quantify the localized impedance on conductive surfaces.
Yaping Shi +8 more
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Calculation of the Surface Impedance, Generalization of the Notion of Surface Impedance
1997In all of the previous chapters, we have dealt with objects whose surfaces are described by an impedance Z, which is defined via the relationship $$\vec E - \hat n\left( {\hat n \cdot \vec E} \right) = {\text{Z}}n \times \vec H.$$
Daniel Bouche +2 more
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The impedance of a curved surface
Optics Communications, 1993Abstract We obtain the impedance boundary condition for the electromagnetic field at a two-dimensional curved boundary between vacuum and a metal, as an expansion in powers of d(ω)|( 1 R min )−( 1 R max )| , where d (ω) is the skin depth of the metal at the frequency ω of the electromagnetic field and R min , R max are ...
T.T. Ong, V. Celli, A.A. Maradudin
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Surface acoustic impedance and causality
The Journal of the Acoustical Society of America, 2001Several models that are commonly used to calculate the surface acoustic impedance of porous materials are examined in light of the causality requirement in its nonlocal and its approximate local forms. Strict (nonlocal) causality requires that the imaginary part of the surface acoustic impedance be the Hilbert transform of the real part.
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Scattering of Surface Waves by a Discontinuity in Surface Impedance
2020 50th European Microwave Conference (EuMC), 2021This paper employs the Wiener-Hopf method to analyse the scattering of a surface wave at the junction of two cylindrical supporting structures of arbitrary surface impedance. Approximations to the reflected, transmitted and radiated fields are derived and calculated for various examples.
Tobias Schaich, Anas Al Rawi, Mike Payne
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Surface impedance of real superconducting surfaces
Cryogenics, 1985Abstract The surface impedance of London superconductors with two-dimensional rectangular grooves of infinite length imitating surface roughness is calculated. Dependences of the effective surface impedance and penetration depth on roughness size are obtained for an arbitrary magnetic field direction.
F.F. Mende +3 more
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AIP Conference Proceedings, 2001
The next generation of linac-based free electron lasers will use very short bunches with a large peak current. For such beams, the impedance caused by submicron imperfections in the vacuum beam tube may generate an additional energy spread within the bunch.
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The next generation of linac-based free electron lasers will use very short bunches with a large peak current. For such beams, the impedance caused by submicron imperfections in the vacuum beam tube may generate an additional energy spread within the bunch.
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