Results 91 to 100 of about 46,408 (179)

Imaging of Biphoton States: Fundamentals and Applications

open access: yesAdvanced Functional Materials, Volume 36, Issue 40, 18 May 2026.
Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley   +1 more source

Adaptive control of port-Hamiltonian systems [PDF]

open access: yes, 2010
In this paper an adaptive control scheme is presented for general port-Hamiltonian systems. Adaptive control is used to compensate for control errors that are caused by unknown or uncertain parameter values of a system.
Scherpen, J.M.A.,   +9 more
core  

Introducing the Groundbreaking Design of the First n‐Input AND Gate Using an Optical‐MOSFET With a Revolutionary Structure of Pulse‐Shaped Gates

open access: yesAdvanced Photonics Research, Volume 7, Issue 5, May 2026.
The paper introduces the first logic gate implementation using optical metal–oxide‐semiconductor field‐effect transistor architecture, specifically designing two‐input and three‐input AND gates based on a silicene waveguide with pulse‐shaped gates. The key innovations include: (1) pulse‐shaped gate design.
Hamed Emami‐Nejad, Ali Mir
wiley   +1 more source

Port-Hamiltonian representation of metriplectic systems and their interconnection [PDF]

open access: yes
We study port-control for metriplectic systems. Using the well-known representation of metriplectic systems as dissipative Hamiltonian systems with the exergy as Hamiltonian function, the corresponding port-controlled Hamiltonian systems are considered ...
Kirchhoff, Jonas, Maschke, Bernhard
core   +1 more source

Robust Trajectory Tracking Control for Fully Actuated Marine Surface Vehicle

open access: yesIEEE Access, 2020
In this paper we present a robust trajectory tracking control for a fully actuated marine surface vehicle. The tracking controller is obtained using a port-Hamiltonian model of the marine craft and includes an integral action to compensate for constant ...
Francisco Del-Rio-Rivera   +3 more
doaj   +1 more source

Passivity Enforcement via Perturbation of Hamiltonian Matrices [PDF]

open access: yes, 2004
This paper presents a new technique for the passivity enforcement of linear time-invariant multiport systems in statespace form. This technique is based on a study of the spectral properties of related Hamiltonian matrices.
Grivet-Talocia, S.   +2 more
core   +1 more source

Port-Hamiltonian Systems on Simplicial Complexes [PDF]

open access: yes, 2012
Geometric structures behind a variety of physical systems stemming from mechanics, electromagnetism and chemistry exhibit a remarkable unity enunciated by Dirac structures. The open dynamical systems defined with respect to these structures belong to the
van der Schaft, Abraham   +3 more
core  

On the velocity-stress formulation for geometrically nonlinear elastodynamics and its structure-preserving discretization

open access: yesMathematical and Computer Modelling of Dynamical Systems
We consider the dynamics of an elastic continuum under large deformation but small strain. Such systems can be described by the equations of geometrically nonlinear elastodynamics in combination with the St. Venant-Kirchhoff material law.
Tobias Thoma   +2 more
doaj   +1 more source

Passivity-based second-order sliding mode control for mechanical port-Hamiltonian systems

open access: yesSICE Journal of Control, Measurement, and System Integration
In this paper, we propose a new second-order sliding mode controller for mechanical port-Hamiltonian systems. This paper proposes a passivity-based sliding mode controller based on kinetic-potential energy shaping (KPES).
Kohei Masutani   +3 more
doaj   +1 more source

Port-Hamiltonian systems: an approach to modelling and control of complex physical systems [PDF]

open access: yes, 2004
It is shown how port-based modeling of lumped-parameter complex physical systems (multi-body systems, electrical circuits, electromechanical systems, ..) naturally leads to a geometrically defined class of systems, called port-Hamiltonian systems.
Schaft, A.J. van der,   +3 more
core  

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