Refractometry of organosilica microspheres [PDF]
Applied Optics, 2007 The refractive index of novel organosilica (nano/micro)material is determined using two methods. The first method is based on analysis of optical extinction efficiency of organosilica beads versus wavelength, which is obtained by a standard laboratory ...
Alexandrov +22 more
core +6 more sources
Material Limitations on the Detection Limit in Refractometry [PDF]
Sensors, 2009 We discuss the detection limit for refractometric sensors relying on high-Q optical cavities and show that the ultimate classical detection limit is given by min {Δn} ≳ η with n + iη being the complex refractive index of the material under refractometric
Niels Asger Mortensen +3 more
doaj +8 more sources
Highly Sensitive Measurement of the Refractive Index of Mesoporous Hollow Silica Microcapsules Using Whispering Gallery Mode Resonances [PDF]
SensorsMonodisperse mesoporous hollow silica microcapsules present unique opportunities for advanced optical characterization due to their tunable nanostructure, high porosity and easy functionalization.
Qisheng Xu +5 more
doaj +2 more sources
Immunity transfer in mule foals fed with good IgG quality colostrum [PDF]
HeliyonWhile the passive transfer of immunity in horse and donkey foals has been extensively studied, there is limited information for mule foals. Immunoglobulin type G (IgG) and serum total protein concentration (TP) were assessed at different sampling times ...
Luca Turini +5 more
doaj +2 more sources
Fibre Refractometry for Minimally Invasive Sugar Content Measurements within Produce [PDF]
SensorsA minimally invasive needle refractometer is presented for sugar content measurements within produce. A passive sampling cap structure was developed that improves the reliability of the device by avoiding interfering back reflections from the flesh of ...
Mark A. Zentile +3 more
doaj +2 more sources
Topological phase structures of conical refraction beams: expanding orbital angular momentum applications for nanoscale biosensing. [PDF]
NanophotonicsAbstract Topologically structured light carrying orbital angular momentum (OAM) has emerged as a powerful tool for nano‐photonics and biomedical optics, yet conventional integer‐charge Laguerre–Gaussian (LG) beams suffer from rotational degeneracy that limits diagnostic precision.
Galiakhmetova D +7 more
europepmc +2 more sources
Splitting of resonances in a curved optical fiber-based Fabry-Perot resonator [PDF]
Компьютерная оптика, 2021 In this work, the splitting of resonance lines in a Fabry-Perot resonator formed by a section of a standard curved single-mode fiber with metal-coated ends is investigated numerically and experimentally.
A.V. Dyshlyuk +2 more
doaj +1 more source
Vergence Formula for Estimating the Refractive Status of Aphakic Eyes in Pediatric Patients
Frontiers in Medicine, 2022 Clinical RelevanceA vergence formula may provide a simple and reliable calculation of the refractive status of aphakic eyes.BackgroundMeasuring the refractive error of pediatric eyes with aphakia is difficult.
Linlu Tian +6 more
doaj +1 more source
Critical Angle Refractometry for Lossy Media with a Priori Known Extinction Coefficient
Physics, 2021 Critical angle refractometry is an established technique for determining the refractive index of liquids and solids. For transparent samples, the critical angle refractometry precision is limited by incidence angle resolution.
Spyridon Koutsoumpos +2 more
doaj +1 more source