Results 41 to 50 of about 4,020,412 (320)

Quantitative refractive index distribution of single cell by combining phase-shifting interferometry and AFM imaging

open access: yesScientific Reports, 2017
Cell refractive index, an intrinsic optical parameter, is closely correlated with the intracellular mass and concentration. By combining optical phase-shifting interferometry (PSI) and atomic force microscope (AFM) imaging, we constructed a label free ...
Qinnan Zhang   +6 more
semanticscholar   +1 more source

Impact of bulk density assignment of bone on MRI‐based abdominal region radiotherapy planning for MR‐linac workflow

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose The purpose of the present study was to evaluate the impact of bone relative electron density (rED) assignment on radiotherapy planning for the abdominal region. Methods Twenty patients who received abdominal radiotherapy using MR‐Linac and underwent magnetic resonance imaging (MRI) and computed tomography (CT) simulation were analyzed.
Kota Abe   +4 more
wiley   +1 more source

High-Sensitivity Seawater Refraction Index Optical Measurement Sensor Based on a Position-Sensitive Detector

open access: yesSensors
The refractive index of seawater is one of the essential parameters in ocean observation, so it is necessary to achieve high-precision seawater refractive index measurements.
Guanlong Zhou   +3 more
doaj   +1 more source

Study on optical refractive index detection for emulsion concentration

open access: yes矿业科学学报, 2017
Concentration of emulsion has a significant influence on the working performance and service life of hydraulic supports.In this paper, existing approaches of emulsion concentration detection were analyzed.
Zhao Sihai, Zhang Ce, Yuan Gaopeng
doaj   +1 more source

Refractive index less than two: photonic nanojets yesterday, today and tomorrow [Invited]

open access: yes, 2017
Materials with relatively small refractive indices ...
B. Luk’yanchuk   +4 more
semanticscholar   +1 more source

Current and Future Cornea Chip Models for Advancing Ophthalmic Research and Therapeutics

open access: yesAdvanced Biology, EarlyView.
This review analyzes cornea chip technology as an innovative solution to corneal blindness and tissue scarcity. The examination encompasses recent developments in biomaterial design and fabrication methods replicating corneal architecture, highlighting applications in drug screening and disease modeling while addressing key challenges in mimicking ...
Minju Kim   +3 more
wiley   +1 more source

High Sensitivity Refractive Index Sensor by D-Shaped Fibers and Titanium Dioxide Nanofilm

open access: yesAdvances in Condensed Matter Physics, 2018
This paper presents a high sensitivity liquid refractive index (RI) sensor based on lossy mode resonance (LMR) effect. The D-shaped fibers coated with nanosized titanium dioxide (TiO2) thin film as a sensing head were submerged into different refractive ...
Chuen-Lin Tien, Hong-Yi Lin, Shu-Hui Su
doaj   +1 more source

Refractive Index-Modulated LSPR Sensing in 20–120 nm Gold and Silver Nanoparticles: A Simulation Study

open access: yesECS Sensors Plus, 2023
Localized surface plasmon resonance (LSPR) based sensing has been a simple and cost-effective way to measure local refractive index changes. LSPR materials exhibit fascinating properties that have significant implications for various bio/chemical sensing
Zoe Bradley   +2 more
doaj   +1 more source

Negative Refractive Index in Optics of Metal-Dielectric Composites [PDF]

open access: yes, 2005
Specially designed metal-dielectric composites can have a negative refractive index in the optical range. Specifically, it is shown that arrays of single and paired nanorods can provide such negative refraction. For pairs of metal rods, a negative refractive index has been observed at 1.5 micrometer.
arxiv   +1 more source

A right-handed isotropic medium with a negative refractive index [PDF]

open access: yesPhys. Rev. Lett. 95, 067402 (2005), 2004
The sign of the refractive index of any medium is soley determined by the requirement that the propagation of an electromagnetic wave obeys Einstein causality. Our analysis shows that this requirement predicts that the real part of the refractive index may be negative in an isotropic medium even if the electric permittivity and the magnetic ...
arxiv   +1 more source

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