Per Michael Johansen | Academic Influence

Per Michael Johansen's AcademicInfluence.com Rankings

Per Michael Johansen

Computer Science

#2987

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#3131

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Machine Learning

#5661

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#5739

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Artificial Intelligence

#6108

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#6203

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Database

#9408

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#9911

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computer-science Degrees

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Computer Science

Per Michael Johansen's Degrees

PhD Computer Science Aarhus University
Bachelors Computer Science Aalborg University

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Why Is Per Michael Johansen Influential?

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According to Wikipedia, Per Michael Johansen is a Danish engineer and physicist and the current rector of Aalborg University . Early life Johansen was born in 1960 in the small holiday and fishing village Agger in the Thy district, which is located in the northwestern part of Jutland in Denmark. He graduated from high school in Thisted in 1980. He subsequently studied Technical Physics at Aalborg University and holds a master's degree within this particular field which he was awarded in 1986. In addition to his master's degree he also holds a PhD and a title of Doctor of Science in physics .

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Per Michael Johansen's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

MEAN-FIELD THEORY OF PHOTOINDUCED FORMATION OF SURFACE RELIEFS IN SIDE-CHAIN AZOBENZENE POLYMERS (1998) (281)
UV and RIR matrix assisted pulsed laser deposition of organic MEH-PPV films (2004) (91)
Mean-field theory of photoinduced molecular reorientation in azobenzene liquid crystalline side-chain polymers (1997) (81)
Theoretical model of photoinduced anisotropy in liquid-crystalline azobenzene side-chain polyesters (1998) (55)
Optimum Design of a Moving Coil Actuator for Fast-Switching Valves in Digital Hydraulic Pumps and Motors (2015) (40)
Characterization of azobenzene chromophores for reversible optical data storage: molecular quantum calculations (2000) (39)
Single-mode operation of a laser-diode array with frequency-selective phase-conjugate feedback. (1998) (39)
Quantum theory and experimental studies of absorption spectra and photoisomerization of azobenzene polymers (1998) (37)
Investigation of chromophore-chromophore interaction by electro-optic measurements, linear dichroism, x-ray scattering, and density-functional calculations. (2005) (35)
Tunable single-mode operation of a high-power laser-diode array by use of an external cavity with a grating and a photorefractive phase-conjugate mirror (1998) (30)
Fundamental characteristics of space-charge waves in photorefractive sillenite crystals (1998) (27)
Optimal control of a wind turbine with digital fluid power transmission (2017) (26)
Limitations of the stretched exponential function for describing dynamics in disordered solid materials (2005) (25)
Vectorial solution to the photorefractive band transport model in the spatial and temporal Fourier transformed domain (1989) (24)
Particle-in-a-box model of one-dimensional excitons in conjugated polymers (2000) (23)
Photorefractive Effects, Materials, and Devices (2001) (22)
Photorefractive grating formation in piezoelectric La3Ga5SiO14:Pr3+ crystals (1996) (18)
Parametric oscillation in photorefractive media (1995) (17)
Fluid Stiction Modeling for Quickly Separating Plates Considering the Liquid Tensile Strength (2015) (17)
Suppressing self-induced frequency scanning of a phase conjugate diode laser array using counterbalance dispersion (1998) (15)
Nonlinear self-defocusing in doped silica sono-gels (1997) (14)
dc and ac Electro-optic response of chromophores in a viscoelastic polymer matrix: analytical model (2002) (14)
Observation of angularly tilted subharmonic gratings in photorefractive bismuth silicon oxide. (1994) (14)
In vivo and in situ measurement and modelling of intra-body effective complex permittivity. (2015) (13)
Discrete Linear Time Invariant Analysis of Digital Fluid Power Pump Flow Control (2017) (13)
Incoherent enhancement of the photorefractive response in Bi(12)SiO(20) by subharmonic interaction. (1995) (12)
Analysis of Valve Requirements for High-Efficiency Digital Displacement Fluid Power Motors (2013) (12)
Electro-optic response of chromophores in a viscoelastic polymer matrix to a combined dc and ac poling field (2003) (12)
LQR Feedback Control Development for Wind Turbines Featuring a Digital Fluid Power Transmission System (2016) (12)
Transversal parametric oscillation and its external stability in photorefractive sillenite crystals (1998) (11)
Theoretical study of conjugated porphyrin polymers (2005) (11)
Optimum design of seat region in valves suitable for digital displacement machines (2014) (11)
Event-driven control of a speed varying digital displacement machine (2017) (11)
Design and modelling of fast switching efficient seat valves for digital displacement pumps (2013) (10)
Orientational dynamics in dye-doped organic electro-optic materials (2003) (10)
Analysis of wave coupling in photorefractive cubic media far from the paraxial limit (1995) (10)
Delta-Sigma Modulated Displacement of a Digital Fluid Power Pump (2015) (10)
Steady-state analysis of ac subharmonic generation in photorefractive sillenite crystals (1998) (10)
Photorefractive subharmonics—a beam-coupling effect? (1998) (9)
Modeling of movement-induced and flow-induced fluid forces in fast switching valves (2015) (9)
Ac square-wave field-induced subharmonics in photorefractive sillenite: threshold for excitation by inclusion of higher harmonics (1999) (9)
Analytical and numerical study on grating depth effects in grating coupled waveguide sensors (2005) (9)
Analytical modeling of two beam coupling during grating translation in photorefractive media (2001) (9)
Physical origin of laser frequency scanning induced by photorefractive phase-conjugate feedback (1999) (9)
Challenges with Respect to Control of Digital Displacement Hydraulic Units (2018) (9)
Tribodynamic Modeling of Digital Fluid Power Motors (2014) (8)
Excitation of higher harmonic gratings in AC-field biased photorefractive crystals (1998) (8)
Advances in Photorefractive Materials, Effects and Devices (1999) (8)
Longitudinal, degenerate, and transversal photorefractive parametric oscillation: theory and experiment (1997) (8)
Model Predictive Control of Low-Speed Partial Stroke Operated Digital Displacement Pump Unit (2018) (7)
Design Method for Fast Switching Seat Valves for Digital Displacement® Machines (2014) (7)
Influence of beam-coupling on photorefractive parametric oscillation in a dc-field-biased Bi12SiO20 crystal (1998) (7)
Analysis of Dynamic Properties of a Fast Switching On-Off Valve for Digital Displacement Pumps (2012) (7)
Two-wave mixing with externally applied magnetic field and Faraday effect on photorefractive medium (1994) (7)
Optimization of geometry of annular seat valves suitable for Digital Displacement fluid power pumps/motors (2013) (7)
Two-step two-color recording in a photorefractive praseodymium-doped La3Ga5SiO14 crystal (1999) (6)
On the Influence of Piston and Cylinder Density in Tribodynamics of a Radial Piston Digital Fluid Power Displacement Motor (2015) (6)
Non-linear hybrid control oriented modelling of a digital displacement machine (2017) (6)
REVIEW ARTICLE: Photorefractive space charge field formation: linear and nonlinear effects (2003) (6)
Enhanced four-wave mixing in photorefractive BSO produced by temporal phase shifts (1989) (6)
Adaptive ultrasound reflectometry for lubrication film thickness measurements (2019) (6)
Optics and Fluid Dynamics Department annual progress report for 1997 (1998) (5)
Low-temperature thermal fixing of holograms in photorefractive La(3)Ga(5)SiO(14):Pr(3+) crystal. (1999) (5)
Space-charge field in photorefractive media with a constant applied magnetic field (1991) (5)
Instability of the resonance excitation of space-charge waves in sillenite crystals (1999) (5)
Asymptotic Approximation of Laminar Lubrication Thermal Field at Low Reduced Peclet and Brinkman Number (2014) (5)
On the application of reynolds theory to thermo-piezo-viscous lubrication in oil hydraulics (2015) (5)
Simulation and Experimental Testing of an Actuator for a Fast Switching On-Off Valve Suitable to Efficient Displacement Machines (2014) (5)
Photorefractive space-charge field with running grating and applied sinusoidal ac electric field: solution for all time scales (1998) (5)
Oil Stiction in Fast Switching Annular Seat Valves for Digital Displacement Fluid Power Machines (2014) (5)
Observation of spontaneously frequency-shifted beam fanning in photorefractive Bi12SiO20. (1995) (5)
Topology selection and analysis of actuator for seat valves suitable for use in Digital Displacement pumps/motors (2013) (5)
Magnetophotorefractive effect in LiNbO3:Fe crystals: theory and experiments (1996) (5)
Holographic grating formation in laser-deposited aluminium-doped zinc oxide and indium tin oxide films (2000) (5)
Theory of nonlinear multiple-grating interaction in diffusion-dominated photorefractive media (1996) (5)
Experimental characteristics of spatial subharmonics in BSO (1995) (4)
Modeling of Dynamic Fluid Forces in Fast Switching Valves (2015) (4)
Space-charge wave theory of photorefractive parametric amplification (1999) (4)
Investigation of Squeeze Film Damping and Associated Loads (2017) (4)
Morphological topology generation of a digital fluid power displacement unit using Chebychev-Grübler-Kutzbach constraint (2015) (4)
Polarization and energy transfer dependencies on crystal depth in self-diffraction in BSO (1993) (4)
Photorefractive two-step recording in a piezoelectric La3Ga5SiO14 crystal doped with praseodymium. (1998) (4)
Feedback Control of Pulse-Density-Modulated Digital Displacement Transmission Using a Continuous Approximation (2020) (4)
Simulation of Dynamic Behaviour of a Digital Displacement Motor Using Transient 3D Computational Fluid Dynamics Analysis (2013) (4)
Degenerate parametric amplification in photorefractive media: theoretical analysis (1996) (4)
Bayesian-based localization of wireless capsule endoscope using received signal strength (2014) (4)
Description of the photorefractive response in polymers. (2001) (4)
Four Quadrant Hybrid Control Oriented Dynamical System Model of Digital Displacement® Units (2018) (4)
Analytical Thermal Field Theory Applicable to Oil Hydraulic Fluid Film Lubrication (2014) (3)
Simple theory for degenerate four-wave mixing in photorefractive media. (1988) (3)
Analysis of Temperature's Influence on a Digital Displacement Pump's Volumetric Efficiency (2012) (3)
Cascading solution of the space-charge field problem in ac field biased photorefractive media (1998) (3)
Conductivity of oriented bis-azo polymer films. (2006) (3)
Control and Performance Analysis of a Digital Direct Hydraulic Cylinder Drive (2020) (3)
Tribotronics in Electro-Hydraulic Actuator Technology: Improving Durability by Control (2020) (3)
Valve and Manifold considerations for Efficient Digital Hydraulic Machines (2016) (2)
Modeling of photorefractive two-step gated recording by long-life-time intermediate levels (2001) (2)
Method for Lumped Parameter Simulation of Digital Displacement Pumps/Motors Based on CFD (2013) (2)
Dynamics of organic holographic materials (2002) (2)
Multibody Dynamics of a Fluid Power Radial Piston Motor Including Transient Hydrodynamic Pressure Models in Lubricating Gaps (2013) (2)
Layer ToF Methods for Ultrasonic Lubrication-film Thickness Measurements (2018) (2)
Rotational diffusion model of orientational enhancement in AC field biased photorefractive polymers (2001) (2)
Temperature properties of laser-induced interference filters in lithium niobate (1995) (2)
Photorefractive interference filters (1994) (2)
Critical slowing down of space-charge field relaxation in photorefractive sillenites. (1999) (2)
State of the Art Review on Theoretical Tribology of Fluid Power Displacement Machines (2016) (2)
Linear and nonlinear space-charge field effects in photorefractive materials (2001) (2)
A Robust Control Concept for Hydraulic Drives Based on Second Order Sliding Mode Disturbance Compensation (2017) (2)
Spectrum Estimation in Autocalibration of Ultrasonic Reflectometry Methods for Lubrication Film Thickness Measurements (2018) (2)
Analytical Theory of Grating Couplers for Waveguide Sensing: A Perturbational Approach and Its Limitations (2004) (1)
Influence of quadratic recombination on grating recording in photorefractive crystals (1999) (1)
High density bis-azo copolymers: influence of dipole-dipole interaction on electrical poling processes and realization of a Fabry-Perot modulator (2005) (1)
Nonlinear self-refraction of Gaussian laser beams in silica sono-gels doped with copper tetrasulfonated phthalocyanine (1996) (1)
Optical fixing using shallow traps - application to La3Ga5SiO14 doped with praseodymium (2000) (1)
Longitudinal parametric oscillation in photorefractive sillenites: comparison between theory and experiment (1999) (1)
Mean-field theory of optical storage in liquid crystalline side-chain polymers (1998) (1)
Single-Mode Operation of Laser Diode Arrays Using Photorefractive Phase Conjugators (1998) (1)
Observation of misalignment of the subharmonic grating in photorefractive Bi/sub 12/SiO/sub 20/ (1994) (1)
Laser-Induced Interference Filters in Photorefractive Materials (1992) (1)
Mathematical properties of the rotational diffusion equation (2001) (1)
Applicability of stretched exponential functions for describing dynamics in disordered solid materials (2004) (1)
Source localization using semi-definite programming approach in network with inhomogeneous transmission media (2014) (1)
Analysis of the Non-smooth Dynamical Effects and Suitable Operation and Control Strategies for Digital Displacement Units (2019) (1)
The Challenge of Feedback in Fluid Power Tribotronic Control Systems (2020) (1)
Model Predictive Control and Discrete Analysis of Partial Stroke Operated Digital Displacement Unit (2018) (1)
Proceedings of the 9th JFPS International Symposium on Fluid Power (2014) (1)
Influence of the Lubricant Thermo-Piezo-Viscous Property on Hydrostatic Bearings in Oil Hydraulics (2016) (1)
A Comparison of Adaptive Ultrasound Reﬂectometry Calibration Methods for Use in Lubrication Films (2022) (1)
Analysis of the Thermo-Viscous Effect on Friction and Energy Dissipation in Oil Lubricated Interfaces (2016) (1)
Isogeometric Tribodynamics of a Radial Piston Fluid Power Motor (2018) (1)
Theory of nonlinear multiple-grating interaction in diffusion-dominated photorefractive media: errata (1996) (0)
Setup for pulsed laser deposition of thin ITO films (1995) (0)
Modeling of critical enhancement of photorefractive response in cubic crystals (2001) (0)
A Modelling Approach to Multibody Dynamics of Fluid Power Machinery with Hydrodynamic Lubrication (2013) (0)
Dynamics of organic electro-optic materials (2002) (0)
Phase locking of laser diode arrays using a photorefractive Rh:BaTiO3 crystal (1999) (0)
Space charge dynamics in photorefractive media (1998) (0)
Dynamics of organic holographic materials (poster) (2002) (0)
On light induced charge transport in photorefractive polymers (2001) (0)
A Frequency Response Approach to Sliding Control Design for Hydraulic Drives (2014) (0)
Magnetophotorefractive effect in photovoltaic LiNbO3:Fe (1996) (0)
Self-fixation of holograms in a piezoelectric La 3 Ga 5 SiO 14 :Pr 3+ crystal (1999) (0)
Higher spatial harmonics in nonlinear photorefractive interference filters (1993) (0)
Properties of photorefractive materials: Linear- and nonlinear aspects (1995) (0)
Enhanced Phase-Conjugated Beam Produced by Temporal Phase-Shifted Pump Beam in Photorefractive BSO (1988) (0)
In-Situ Lubrication Film Thickness Measurements in a Radial Piston Motor Using Adaptive Ultrasound Reflectometry (2022) (0)
Polymer light emitting diodes (2003) (0)
Self-fixation of holograms in a piezoelectric La/sub 3/Ga/sub 5/SiO/sub 14/:Pr/sup 3+/ crystal (1999) (0)
AC-field poling of polymers containing azo-dyes studied by dielectric and electro-optic spectroscopy (2000) (0)
Magnetic field enhancement of photovoltaic grating formation in iron-doped lithium niobate crystals (1995) (0)
Photorefractive Interference Filters: Theory and Application (1992) (0)
Observation of photorefractive parametric oscillation in Bi 1 2 SiO 2 0 (1995) (0)
Frequency Analysis Of The Photorefractive Band Transport Model And Its Applications In Multifrequency Wave Mixing (1990) (0)
Holographic gratings induced in laser deposited AZO and ITO films (1999) (0)
Response of photorefractive Bi12SiO20 to running gratings and AC electric field (1997) (0)
AC and DC electro-optic response of dipoles in a viscoelastic polymer matrix (poster) (2002) (0)
Subharmonic diffraction in photorefractive crystals (1993) (0)
The influence of dispersion on the self-induced scanning of a broad area diode laser with phase conjugate feedback (1997) (0)
Observation of photorefractive parametric oscillation in Bi12SiO20 (1995) (0)
Erratum: “Nonlinear self-defocusing in doped silica sono-gels” [J. Appl. Phys. 81, 7728 (1997)] (1998) (0)
Bayesian-based localization in inhomogeneous transmission media (2013) (0)
Combined ac and dc electro-optic response of an azo-dye containing viscoelastic polymer matrix (2003) (0)
An Isogeometric Analysis Approach to Kinematics of Spatial Rigid Multibody Systems with Imperfect Joints (2020) (0)
Dynamics of Magnetophotorefractive Wave Mixing (1993) (0)
An Experimental Study on High-Flowrate Ultrasonic Particle Monitoring in Oil Hydraulics (2022) (0)
Fluid Stiction From a Contact Condition (2021) (0)
Optical properties of liquid-crystalline azobenzene polymers (2000) (0)
Proceedings of the 1997 Topical Meeting on Photorefractive Materials, Effects and Devices (1997) (0)
A study on Matrix assisted pulsed laser deposition of organic MEH-PPV films (2002) (0)
Proceedings of the 1st International Symposium on Laser and Optoelectronics Technology and Applications (1993) (0)
Observation of beam fanning in bulk Bi12SiO20 crystals in the presence of an applied DC electric field (Poster) (1995) (0)
Holographic gratings induced in laser ablated thin films of indium tin oxide (1996) (0)
Optimal control of a wind turbine with digital fluid power transmission (2017) (0)
Enhancement of photorefractive 2W-coupling near the threshold of subharmonic generation (2000) (0)
Observation of misalignment of the subharmonic grating in photorefractive Bi12SiO20 (1994) (0)
Electro-optic polymers (2002) (0)
Two-photon photorefractive effect in piezoelectric La 3 Ga 3 SiO 1 4 crystals doped with Pr 3 + (1997) (0)
Dynamics of the Electro-Optic Properties of Dye-Containing Polymers (2001) (0)
Challenges in application of hybrid switched control to digital hydraulic motors (2019) (0)
Modelling of Spatial Conformal Lubricated Joints in Fluid Power Multibody Systems (2014) (0)
Thin films of ITO produced by pulsed laser deposition (1996) (0)
Photorefractive effect in praseodymium-doped lanthanum gallium silicate crystals (1997) (0)
Photorefractive parametric oscillation in photorefractive media (1997) (0)
Department Annual Progress Report for 2000 (2001) (0)
Modelling reversible optical data storage in photoanisotropic polymers (1998) (0)
Optical fixing in a La 3 Ga 5 SiO 1 4 crystal doped with praseodymium (1999) (0)
The combined ac and dc electro-optic response of chromophores in a viscoelastic polymer matrix (2002) (0)
Semi-definite programming for source localization in inhomogeneous media (2014) (0)
The influence of nonlinear interaction between gratings on light amplification in photorefractive BaTiO3 (1995) (0)
Holographic wave instabilities in photorefractive sillenite crystals (1996) (0)
Dynamics of electro-optic polymers (2003) (0)
The photorefractive effect studied by nondegenerate optical phase conjugation: theoretical and experimental aspects (1989) (0)

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