A localized surface plasmon resonance based fiber optic sensor for refractive index sensing has been analyzed theoretically. The effects of size of the spherical metal nanoparticle as well as the light sources on the performance of the sensor have been studied rigorously. It is observed that a diffuse light source along with an intensity modulation method gives better performance in terms of sensing range. In addition, the use of a diffuse source makes the sensing device very cheap and compact, which is an important issue for the commercial applications. The refractive index range of the sensor is larger than the ranges reported for various types of fiber optic sensors utilizing intensity modulation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/ao.48.003796 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Anatomy-driven segmentation of parafoveal optical coherence tomography (OCT) measures may improve associations with clinical outcomes in multiple sclerosis.
J Neurol
January 2025
Jacobs Comprehensive MS Treatment and Research Center, Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA.
Background: Previous investigations on optical coherence tomography (OCT) in multiple sclerosis (MS) focused on generalizable macular and peri-papillary regions without considering the anatomic variations of the retinal layer thickness.
Objective: This study aimed to assess the utility of parafoveal retinal layer thickness measured by OCT, underscoring its relationships with clinical outcomes in MS.
Methods: In this cross-sectional study, 214 people with MS (pwMS) and 57 age- and sex-matched healthy controls (HCs) were enrolled.
In vivo assessment of regional scleral stiffness by shear wave elastography and its association with choroid and retinal nerve fiber layer characteristics in high myopia.
Graefes Arch Clin Exp Ophthalmol
January 2025
Department of Ophthalmology, School of Medicine, Renji Hospital, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai, 200001, China.
Purpose: To evaluate the posterior scleral stiffness of different regions in high myopic eyes and to explore its associations with macular choroidal and peripapillary retinal nerve fiber layer (pRNFL) thickness and vasculature.
Methods: Thirty subjects with high myopic eyes and 30 subjects with low myopic eyes were included in this study. The elastic modulus of the macular and peripapillary sclera at the temporal, nasal, superior and inferior regions were determined via shear wave elastography (SWE).
Excess cement and peri-implant disease: A cross-sectional clinical endoscopic study.
J Periodontol
January 2025
Department of Biomedical and Neuromotor Sciences, School of Dentistry - Division of Periodontology and Implantology, Alma Mater Studiorum - University of Bologna, Bologna, Italy.
Background: Crown cementation is a common technique for implant-supported prosthodontics. However, for possible slipping of the cement below the mucosal margin, its thorough removal poses some issues. The objective of this study was to evaluate the presence of submucosal cement residues in patients with peri-implant disease by endoscopic visualization and to investigate the potential correlation between the pathological scenario and the spatial position of cement residues.
View Article and Find Full Text PDFIn vivo imaging of mitochondrial function in normal, glaucoma suspect, and glaucoma eyes.
PLoS One
January 2025
Department of Ophthalmology, University of Washington, Seattle, WA, United States of America.
To investigate macula and optic nerve head (ONH) mitochondrial metabolic activity using flavoprotein fluorescence (FPF) in normal, glaucoma suspect (GS), and open-angle glaucoma (OAG) eyes we performed a cross-sectional, observational study of FPF in normal, GS, and OAG eyes. The macula and ONH of each eye was scanned and analyzed with a commercially available FPF measuring device (OcuMet Beacon, OcuSciences Inc., Ann Arbor, MI).
View Article and Find Full Text PDFRelationship Between Intraocular Pressure and the True Rate of Functional and Structural Progression in the United Kingdom Glaucoma Treatment Study.
Invest Ophthalmol Vis Sci
January 2025
NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, United Kingdom.
Purpose: To investigate the effect of average intraocular pressure (IOP) on the true rate of glaucoma progression (RoP) in the United Kingdom Glaucoma Treatment Study (UKGTS).
Methods: UKGTS participants were randomized to placebo or Latanoprost drops and monitored for up to two years with visual field tests (VF, 24-2 SITA standard), IOP measurements, and optic nerve imaging. We included eyes with at least three structural or functional assessments (VF with <15% false-positive errors).
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!