Results 1 to 10 of about 171,881 (156)

Evaluating β-amyloidosis progression in Alzheimer's disease with Mueller polarimetry. [PDF]

Biomed Opt Express, 2020
We applied the wide-field Mueller imaging polarimetry for the screening of formalin-fixed paraffin-embedded samples of mouse brain tissue at different stages of brain β-amyloidosis in Alzheimer’s disease (AD). The accumulation of amyloid-beta (Aβ) deposits throughout the brain tissue is one of the key pathological hallmarks observed with the AD ...
Borovkova M, Bykov A, Popov A, Pierangelo A, Novikova T, Pahnke J, Meglinski I.   +6 more
europepmc   +8 more sources

Mueller Matrix Polarimetry on Cyanine Dye J-Aggregates

Molecules, 2023
Cyanine dyes are known to form H- and J-aggregates in aqueous solutions. Here we show that the cyanine dye, S0271, assembles in water into vortex induced chiral J-aggregates. The chirality of the J-aggregates depends on the directionality of the vortex. This study utilised both conventional benchtop CD spectropolarimeters and Mueller matrix polarimetry.
Rohanah Hussain, Dora-M Răsădean, Giuliano Siligardi   +2 more
exaly   +5 more sources

Synthetic Mueller imaging polarimetry [PDF]

Photonics, 2023
The transformation of the state of polarization of a light beam by its linear interaction with a material medium can be modeled through the Stokes-Mueller formalism. The Mueller matrix associated with a given interaction depends on many aspects of the measurement configuration.
José J. Gil, Ignacio San José
openaire   +5 more sources

A Practical Guide to Mueller Matrix Analysis of Chiroptical Materials. [PDF]

Chirality
This study presents a unified theoretical framework and closed‐form Mueller matrix expressions for analyzing chiroptical properties across six fundamental polarization properties that lead to different macroscopic symmetries. We provide an experimental protocol to successfully isolate intrinsic circular dichroism from apparent wavevector‐dependent ...
Arteaga O, Ugras TJ, Robinson RD.
europepmc   +2 more sources

A multiscale Mueller polarimetry module for a stereo zoom microscope. [PDF]

Biomed Eng Lett, 2019
Mueller polarimetry is a quantitative polarized light imaging modality that is capable of label-free visualization of tissue pathology, does not require extensive sample preparation, and is suitable for wide-field tissue analysis. It holds promise for selected applications in biomedicine, but polarimetry systems are often constrained by limited end ...
Gribble A, Pinkert MA, Westreich J, Liu Y, Keikhosravi A, Khorasani M, Nofech-Mozes S, Eliceiri KW, Vitkin A.   +8 more
europepmc   +4 more sources

Full Vectorial Field Sensing Using Liquid Crystal Droplet Arrays. [PDF]

Adv Mater
An inkjet‐printed liquid crystal droplet array enables compact, low‐cost, single‐shot sensing of the full vectorial light field. Within a single platform, it simultaneously retrieves intensity, polarization, and phase, while dual‐wavelength operation highlights its capability for multi‐wavelength optical field characterization. ABSTRACT Determining the
Qiu X, Guo J, Cui J, Zhang R, Zhao Z, Ma Y, Kamal W, Elston SJ, Castrejón-Pita AA, Morris SM, He C.   +10 more
europepmc   +2 more sources

Tuning Circular Dichroism and Circularly Polarised Luminescence in Single Crystals of a Perylene Diimide Macrocycle. [PDF]

Angew Chem Int Ed Engl
The circular dichroism (CD) and circularly polarised (CPL) of a bis‐perylene diimide macrocycle are measured in single crystals. These chiroptical properties are tuned by the macrocycle's π–π stacking interactions in the solid‐state. Abstract Chiral materials that manipulate circularly polarised light have burgeoning applications across optoelectronics,
Hartmann D, Penty SE, Krimovs A, Pal R, Gianga TM, Siligardi G, Barendt TA.   +6 more
europepmc   +3 more sources

Synthesis, Structure, and Thin Film Optical Properties of a Chiral Benzothiazole-Derived Squaraine. [PDF]

Chemphyschem
Solution‐processed thin films can be sensitive to the choice of solvent and thermal annealing, which we explore for a chiral benzothiazole squaraine. We observe peculiarly shaped excitonic circular dichroism in uniaxially anisotropic thin films, in which the presumed Davydov bands are spatially distributed exclusively into in‐plane (UDC) and out‐of ...
Schumacher MF, Schnakenburg G, Sariciftci NS, Lützen A, Schiek M.   +4 more
europepmc   +2 more sources

Nonlinear Stokes-Mueller polarimetry [PDF]

Physical Review A, 2016
The Stokes Mueller polarimetry is generalized to include nonlinear optical processes such as second- and third-harmonic generation, sum- and difference-frequency generations. The overall algebraic form of the polarimetry is preserved, where the incoming and outgoing radiations are represented by column vectors and the intervening medium is represented ...
Samim, Masood, Krouglov, Serguei, Barzda, Virginijus   +2 more
openaire   +2 more sources

Three-photon Stokes-Mueller polarimetry [PDF]

Physical Review A, 2016
12 pages, 2 ...
Samim, Masood, Krouglov, Serguei, Barzda, Virginijus   +2 more
openaire   +2 more sources