Mikael Käll
Mikael Käll is an experimental physicist focusing on fundamental and applied nanooptics and biophotonics. His current research projects mainly deals with the physics and applications of optical antennas and metasurfaces, as well as optical and photothermal forces. The primary objective of these studies is to pave the wave for new applications, such as optical biosensors and manipulation devices. He has previously worked with topics like surface-enhanced Raman scattering, light toxicity in yeast cells, and strongly correlated electron systems, including high-Tc superconductors. The Käll research group is primarily funded by the Knut & Alice Wallenberg Foundation and the Swedish Research Council.
Showing 201 publications
Synchronization of optically self-assembled nanorotors
Rotary metaswimmers powered by linearly polarized light
Tunable critical Casimir forces counteract Casimir–Lifshitz attraction
Directional Control of Transient Flows Generated by Thermoplasmonic Bubble Nucleation
High-angle deflection of metagrating-integrated laser emission for high-contrast microscopy
Deep learning in light-matter interactions
Strongly Deflecting Cylindrical Metalenses for Ultra-Compact Spectroscopy
Phase-gradient metalens for optical confinement and transport of microparticles
Light-driven transport of microparticles with phase-gradient metasurfaces
Metasurfaces for Divergent Beams and Large-Area Metasurfaces
Microscopic metavehicles powered and steered by embedded optical metasurfaces
Non-equilibrium properties of an active nanoparticle in a harmonic potential
Metasurface Optical Characterization Using Quadriwave Lateral Shearing Interferometry
Aberration-corrected large-scale hybrid metalenses
Nanoplasmonic−nanofluidic single-molecule biosensors for ultrasmall sample volumes
Non-equilibrium properties of an active nanoparticle in a harmonic potential
Dynamics of an active Nanoparticle in an optical trap
Circular dichroism mode splitting and bounds to its enhancement with cavity-plasmon-polaritons
Full optical characterization of single nanoparticles using quantitative phase imaging
Optical Tweezing and Photothermal Properties of Resonant Dielectric and Metallic Nanospheres
Strong Transient Flows Generated by Thermoplasmonic Bubble Nucleation
Nanoscale Inorganic Motors Driven by Light: Principles, Realizations, and Opportunities
Present and Future of Surface-Enhanced Raman Scattering
Optical material anisotropy in high-index transition metal dichalcogenide Mie nanoresonators
Large-Scale Metasurfaces Made by an Exposed Resist
Lens aberration correction using large scale metasurfaces
Protein kinase A controls yeast growth in visible light
Optical Rotation and Thermometry of Laser Tweezed Silicon Nanorods
Transition metal dichalcogenide nanodisks as high-index dielectric Mie nanoresonators
Beam displacement due to thermal blooming in optical tweezers
Optical forces and the first Kerker condition
Electromagnetic Energy Distribution in Resonant Quasi Porous Silicon Nanostructures
Computational modelling of metasurfaces for strongly divergent beams
A Gaussian reflective metasurface for advanced wavefront manipulation
Hybrid plasmonic-semiconducting fractal metamaterials for superior sensing of volatile compounds
Plasmonic versus All-Dielectric Nanoantennas for Refractometric Sensing: A Direct Comparison
Surface Interactions of Gold Nanoparticles Optically Trapped against an Interface
Ultrafast Modulation of Thermoplasmonic Nanobubbles in Water
Solar harvesting based on perfect absorbing all-dielectric nanoresonators on a mirror
Large-Scale Fabrication of Shaped High Index Dielectric Nanoparticles on a Substrate and in Solution
Construction and operation of a light-driven gold nanorod rotary motor system
Light-Driven Rotation of Plasmonic Nanomotors
High index dielectric metasurfaces and colloidal solutions: From fabrication to application
Optically controlled stochastic jumps of individual gold nanorod rotary motors
Anapole-Enhanced Intrinsic Raman Scattering from Silicon Nanodisks
Counter-Propagating Optical Trapping of Resonant Nanoparticles Using a Uniaxial Crystal
FRET enhancement close to gold nanoparticles positioned in DNA origami constructs
Brownian fluctuations of an optically rotated nanorod
Thin-film amorphous silicon nanopillar solar cells: An investigation of the optical potential
Metasurfaces and Colloidal Suspensions Composed of 3D Chiral Si Nanoresonators
Light-sensing via hydrogen peroxide and a peroxiredoxin
Multidimensional Hybridization of Dark Surface Plasmons
Wavevector-Selective Nonlinear Plasmonic Metasurfaces
Large-Scale Silicon Nanophotonic Metasurfaces with Polarization Independent Near-Perfect Absorption
Nanostructured surface plasmon resonance sensors
Sensing (un)binding events via surface plasmons: Effects of resonator geometry
A Multiscale Approach to Modeling Plasmonic Nanorod Biosensors
Gold nanorod rotary motors for ultra-sensitive DNA detection
Directional Light Extinction and Emission in a Metasurface of Tilted Plasmonic Nanopillars
Hot Electron Generation and Cathodoluminescence Nanoscopy of Chiral Split Ring Resonators
Fabrication of Continuous Gradient Plasmonic Nanostructures
Polarization conversion-based molecular sensing using anisotropic plasmonic metasurfaces
Laser Trapping of Colloidal Metal Nanoparticles
Dimer-on-mirror SERS substrates with attogram sensitivity fabricated by colloidal lithography
Ultimate Limit of Light Extinction by Nanophotonic Structures
Plasmon Enhanced Internal Photoemission in Antenna-Spacer-Mirror Based Au/TiO2 Nanostructures
Optical Magnetism and Plasmonic Fano Resonances in Metal Insulator-Metal Oligomers
Near-Complete Photon Spin Selectivity in a Metasurface of Anisotropic Plasmonic Antennas
Schottky barrier formation and band bending revealed by first- principles calculations
Gold Nanorod Rotary Motors Driven by Resonant Light Scattering
Explosive and chemical threat detection by surface-enhanced Raman scattering: A review
A Thermal Plasmonic Sensor Platform: Resistive Heating of Nanohole Arrays
Directional Nanoplasmonic Antennas for Self-Referenced Refractometric Molecular Analysis
Macroscopic Layers of Chiral Plasmonic Nanoparticle Oligomers from Colloidal Lithography
Nanogaps for SERS applications
Approaching the strong coupling limit in single plasmonic nanorods interacting with J-aggregates
Ultrafast Spinning of Gold Nanoparticles in Water Using Circularly Polarized Light
Mutually synchronized bottom-up multi-nanocontact spin-torque oscillators
Plasmon enhanced ELISA on large arrays of single particles prepared by electron beam lithography
Crz1 is activated by blue light in a Ca2+/calcineurin-dependent and PKA-independent manner
Toward Plasmonic Biosensors Functionalized by a Photoinduced Surface Reaction
Complete Light Annihilation in an Ultrathin Layer of Gold Nanoparticles
Plasmonic nanoantennas for SERS, directional light, sensing and strong coupling
Laser manipulation of plasmonic nanoparticles for SERS and sensing
Directional Scattering and Hydrogen Sensing by Bimetallic Pd-Au Nanoantennas
Diffraction from Arrays of Plasmonic Nanoparticles with Short-Range Lateral Order
Simulating light scattering from supported plasmonic nanowires
Optical tweezers for Raman spectroscopy
Fano interference in supported gold nanosandwiches with weakly coupled nanodisks
Plasmonic nanosensors: Inverse sensitivity
A combination of concave/convex surfaces for field-enhancement optimization: the indented nanocone
Biosensors: One molecule at a time
A simple model for the resonance shift of localized plasmons due to dielectric particle adhesion
Fano Interference between Localized Plasmons and Interface Reflections
A bimetallic nanoantenna for directional colour routing
Plasmon-Enhanced Colorimetric ELISA with Single Molecule Sensitivity
Cascaded logic gates in nanophotonic plasmon networks
Unidirectional Broadband Light Emission from Supported Plasmonic Nanowires
Optical response of supported gold nanodisks
Metal nanoparticles amplify photodynamic effect on skin cells in vitro
Mode-specific directional emission from hybridized particle-on-a-film plasmons
Angular Distribution of Surface-Enhanced Raman Scattering from Individual Au Nanoparticle Aggregates
Localized vs. propagating surface plasmon biosensing
Optical manipulation of plasmonic nanoparticles using laser tweezers
Hole mask colloidal lithography on magnetic multilayers for spin torque applications
Coloring fluorescence emission with silver nanowires
Sulfate assimilation mediates tellurite reduction and toxicity in Saccharomyces cerevisiae
Optical Forces in Plasmonic Nanoparticle Dimers
Intrinsic Fano Interference of Localized Plasmons in Pd Nanoparticles
Refractometric Sensing Using Propagating versus Localized Surface Plasmons: A Direct Comparison
Sensitivity enhancement of nanoplasmonic sensors on low refractive index substrates
Resonant optical absorption in graphite nanostructures
High-resolution microspectroscopy pf plasmonic nanostructures for miniaturized biosensing
Unidirectional ultracompact optical nanoantennas
Photochemical tuning of plasmon resonances in single gold nanoparticles
Optical forces on interacting plasmonic nanoparticles in a focused Gaussian beam
Shape efffects in the localized surface plasmon resonance of single nanoholes in thin metal films
Image analysis algorithms for cell contour recognition in budding yeast
A SYSTEM AND METHOD FOR DETECTING THE PRESENCE AND/OR ABSENCE OF CHEMICAL OR BIOLOGICAL SUBSTANCES
Green's tensor calculations of plasmon resonances of single holes and hole pairs in thin gold films
Plasmonic Au/Co/Au nanosandwiches with enhanced magneto-optical activity
Enhanced nanoplasmonic optical sensors with reduced substrate effect
Structural asymmetry and induced optical magnetism in plasmonic nanosandwiches
Optical antennas based on coupled nanoholes in thin metal films
Nanohole plasmons in optically thin gold films
Top-down extended meshing algorithm and its applications to Green's tensor nano-optics calculations
Nanometric control of the distance between plasmonic nanoparticles using optical forces
Gold-silica-gold nanosandwiches: tunable bimodal plasmonic resonators
Long-range refractive index sensing using plasmonic nanostructures
Resonant two-phonon Raman scattering as a probe of hole crystal formation in Sr14?xCaxCu24O41
Photo-induced transformations in 2,2:5,2-terthiophene thin films on silver
Photoinduced nanodots and pinning effects in Bi2Sr2CaCu2O8+x
Magnetic-field enhancement in gold nanosandwiches
Estimating SERS properties of silver-particle aggregates through generalized Mie theory
On the importance of optical forces in surface-enhanced Raman scattering
Raman Spectroscopic Studies of Terthiophenes for Molecular Electronics
Creating hot nanoparticle pairs for surface-enhanced Raman spectroscopy through optical manipulation
Photoinduced nanodots in Bi2Sr2CaCu2O8+x
Field-enhancement and molecular response in surface-enhanced Raman and fluorescence spectroscopy
Microstructural changes in gold nanoparticles upon pulsed laser irradiation
In situ resonant Raman scattering and reversible photoinduced structural change in YBa2Cu3O6+x
Plasmonic Sensing Characteristics o f Single Nanometric Holes
Localized surface plasmon sensing of lipid-membrane-mediated biorecognition events
Order-disorder-order phase transitions in the pyrochlore superconductor Cd2Re2O7
Plasmons in the metallic nanoparticle-film system as a tunable impurity problem
Surface-enhanced Raman scattering and fluorescence near metal surfaces
Light scattering in gold nanorings
Optical Spectroscopy of Nanometric Holes in Thin Gold Films
Optical spectroscopy of single trapped metal nanoparticles in solution
Resonance Raman spectroscopy of optically trapped functional erythrocytes
Phase control in high-temprature superconductors
Multivariate evaluation of doxorubicin surface-enhanced Raman spectra.
Feasibility of quantitative determination of doxorubicin with surface-enhanced Raman spectroscopy
Raman scattering investigations of phonons in ceramic high-T superconductors
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Showing 7 research projects
Optothermal Marangoni convection and sensing at the nanoscale
Kvantplasmonik – en teknologi för foton-fotonväxelverkan på kvantnivå vid rumstemperatur
Optomekaniska resonatorer på nanoskala
Plasmonic antennas shine light on the nanoworld
Peroxiredoxiners funktion i biologiska klockor och ljusstyrda biologiska rytmer i jäst
Funktionella elektromagnetiska metamaterial & optisk sensing