Light scattering
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Light fields in complex media: Mesoscopic scattering meets wave control Open
The newly emerging field of wave front shaping in complex media has recently\nseen enormous progress. The driving force behind these advances has been the\nexperimental accessibility of the information stored in the scattering matrix\nof a…
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A comparison of TEM and DLS methods to characterize size distribution of ceramic nanoparticles Open
The accuracy of dynamic light scattering (DLS) measurements are compared with transmission electron microscopy (TEM) studies for characterization of size distributions of ceramic nanoparticles. It was found that measurements by DLS using n…
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Light Sources and Dosimetry Techniques for Photodynamic Therapy Open
Effective treatment delivery in photodynamic therapy (PDT) requires coordination of the light source, the photosensitizer, and the delivery device appropriate to the target tissue. Lasers, light‐emitting diodes (LEDs), and lamps are the ma…
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Refractive index less than two: photonic nanojets yesterday, today and tomorrow [Invited] Open
Materials with relatively small refractive indices (n<2), such as glass, quartz, polymers, some ceramics, etc., are the basic materials in most optical components (lenses, optical fibres, etc.). In this review, we present some of the pheno…
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Application of Light Scattering Techniques to Nanoparticle Characterization and Development Open
Over the years, the scientific importance of nanoparticles for biomedical applications has increased. The high stability and biocompatibility, together with the low toxicity of the nanoparticles developed lead to their use as targeted drug…
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Characterisation of particles in solution – a perspective on light scattering and comparative technologies Open
We present here a perspective detailing the current state-of-the-art technologies for the characterisation of nanoparticles (NPs) in liquid suspension. We detail the technologies involved and assess their applications in the determination …
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Droplets and Aerosols in the Transmission of SARS-CoV-2 Open
Aerosols and Transmission of SARS-CoV-2 With reference to a letter about the use of laser light scattering to visualize droplets that emanate during speech, this author describes the nature of aero...
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Dynamic light scattering and transmission electron microscopy in drug delivery: a roadmap for correct characterization of nanoparticles and interpretation of results Open
In this focus article, we provide a scrutinizing analysis of transmission electron microscopy and dynamic light scattering as the two common methods to study the sizes of nanoparticles with focus on the application in pharmaceutics and dru…
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Triple-Resonant Brillouin Light Scattering in Magneto-Optical Cavities Open
An enhancement in Brillouin light scattering of optical photons with magnons is demonstrated in magneto-optical whispering gallery mode resonators tuned to a triple-resonance point. This occurs when both the input and output optical modes …
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Complex refractive indices and single-scattering albedo of global dust aerosols in the shortwave spectrum and relationship to size and iron content Open
The optical properties of airborne mineral dust depend on its mineralogy, size distribution, and shape, and they might vary between different source regions. To date, large differences in refractive index values found in the literature hav…
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Metamaterials and Metasurfaces for Sensor Applications Open
Electromagnetic metamaterials (MMs) and metasurfaces (MSs) are artificial media and surfaces with subwavelength separations of meta-atoms designed for anomalous manipulations of light properties. Owing to large scattering cross-sections of…
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Measuring particle size distribution and mass concentration of nanoplastics and microplastics: addressing some analytical challenges in the sub-micron size range Open
Light scattering-based measurements do not have the resolution to distinguish multiple populations in polydisperse samples. Nanoparticle tracking analysis (NTA), nano-flowcytometry (nFCM) and asymmetric flow field flow fractionation hyphen…
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Meta-Optics with Mie Resonances Open
Optical magnetic responses and subwavelength localization of light, driven by Mie resonances in high-index nanoparticles, could spur new, breakthrough applications for nanoantennas, nanolasers, highly efficient metasurfaces and ultrafast m…
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Learning-based imaging through scattering media Open
We present a machine-learning-based method for single-shot imaging through scattering media. The inverse scattering process was calculated based on a nonlinear regression algorithm by learning a number of training object-speckle pairs. In …
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Label-Free Single-Molecule Imaging with Numerical-Aperture-Shaped Interferometric Scattering Microscopy Open
Our ability to optically interrogate nanoscopic objects is controlled by the difference between their extinction cross sections and the diffraction-limited area to which light can be confined in the far field. We show that a partially tran…
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Learning-based lensless imaging through optically thick scattering media Open
The problem of imaging through thick scattering media is encountered in many disciplines of science, ranging from mesoscopic physics to astronomy. Photons become diffusive after propagating through a scattering medium with an optical thick…
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Transverse Scattering and Generalized Kerker Effects in All-Dielectric Mie-Resonant Metaoptics Open
All-dielectric resonant nanophotonics lies at the heart of modern optics and nanotechnology due to the unique possibilities to control scattering of light from high-index dielectric nanoparticles and metasurfaces. One of the important conc…
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Silicon Mie resonators for highly directional light emission from monolayer MoS2 Open
Controlling light emission from quantum emitters has important applications, ranging from solid-state lighting and displays to nanoscale single-photon sources. Optical antennas have emerged as promising tools to achieve such control right …
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Compressive light-field microscopy for 3D neural activity recording Open
Understanding the mechanisms of perception, cognition, and behavior requires instruments that are capable of recording and controlling the electrical activity of many neurons simultaneously and at high speeds. All-optical approaches are pa…
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Light Scattering by a Dielectric Sphere: Perspectives on the Mie Resonances Open
Light scattering by a small spherical particle, a central topic for electromagnetic scattering theory, is here considered. In this short review, some of the basic features of its resonant scattering behavior are covered. First, a general p…
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Full-Color Biomimetic Photonic Materials with Iridescent and Non-Iridescent Structural Colors Open
The beautiful structural colors in bird feathers are some of the brightest colors in nature and some of these colors are created by arrays of melanin granules that act as both structural colors and scattering absorbers. Inspired by the col…
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MATLAB Functions for Mie Scattering and Absorption, Version 2 Open
A set of MATLAB Functions for Mie calculations (Matzler, 2002a) and for applica- tions to microwave radiation in rain (Matzler, 2002b) has been improved and expanded by including magnetic and metal-like media and coated spheres. The append…
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Focusing light inside dynamic scattering media with millisecond digital optical phase conjugation Open
Wavefront shaping based on digital optical phase conjugation (DOPC) focuses light through or inside scattering media, but the low speed of DOPC prevents it from being applied to thick, living biological tissue. Although a fast DOPC approac…
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Dry versus wet marine particle optical properties: RH dependence of depolarization ratio, backscatter, and extinction from multiwavelength lidar measurements during SALTRACE Open
Triple-wavelength lidar observations of the depolarization ratio and the backscatter coefficient of marine aerosol as a function of relative humidity (RH) are presented with a 5 min time resolution. The measurements were performed at Barba…
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Spatiotemporal Coherent Control of Light through a Multiple Scattering Medium with the Multispectral Transmission Matrix Open
We report the broadband characterization of the propagation of light through a multiple scattering medium by means of its multispectral transmission matrix. Using a single spatial light modulator, our approach enables the full control of b…
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Brillouin Light Scattering by Magnetic Quasivortices in Cavity Optomagnonics Open
A ferromagnetic sphere can support optical vortices in the form of whispering gallery modes and magnetic quasivortices in the form of magnetostatic modes with nontrivial spin textures. These vortices can be characterized by their orbital a…
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Wideband dielectric metamaterial reflectors: Mie scattering or leaky Bloch mode resonance? Open
Metamaterials are important, as they possess properties not found in simple materials. Photonic device technology applying metamaterials supports many new and useful applications. Here, we address the fundamental physics of wideband metama…
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Dynamic light scattering imaging Open
Nature of red blood cell dynamics and light scattering interactions unraveled to accurately probe cerebral blood flow.
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Dynamic Light Scattering and Its Application to Control Nanoparticle Aggregation in Colloidal Systems: A Review Open
Colloidal systems and their control play an essential role in daily human activities, but several drawbacks lead to an avoidance of their extensive application in some more productive areas. Some roadblocks are a lack of knowledge regardin…
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Ferroelectric crystals with giant electro-optic property enabling ultracompact Q-switches Open
Relaxor-lead titanate (PbTiO 3 ) crystals, which exhibit extremely high piezoelectricity, are believed to possess high electro-optic (EO) coefficients. However, the optical transparency of relaxor-PbTiO 3 crystals is severely reduced as a …