Results 11 to 20 of about 303,599 (379)

Optical Waveguide Refractive Index Sensor for Biochemical Sensing

Applied Sciences, 2023
This study describes the basic principles of optical waveguide refractive index sensing and the various design structures of refractive index sensors. These waveguides generate different optical resonances, which cause changes in the sensing refractive ...
Cheng Peng, Changjin Yang, Huan Zhao, Lei Liang, Chuantao Zheng, Chen Chen, Li Qin, Hui Tang   +7 more
doaj   +2 more sources

High Sensitivity and Wide Range Refractive Index Sensor Based on Surface Plasmon Resonance Photonic Crystal Fiber

Sensors, 2023
In order to detect the refractive index (RI) of high refractive index materials such as trichlorobenzene and aniline in the near-infrared and mid-infrared spectra and expand the detection range of the refractive index, a surface plasmon resonance (SPR ...
Fengmin Wang, Yong Wei, Yanhong Han
doaj   +2 more sources

Ultrasensitive Silicon Photonic Refractive Index Sensor Based on Hybrid Double Slot Subwavelength Grating Microring Resonator [PDF]

Sensors
Silicon photonic-based refractive index sensors are of great value in the detection of gases, biological and chemical substances. Among them, microring resonators are the most promising due to their compact size and narrow Lorentzian-shaped spectrum. The
Kaiwei Lu, Beiju Huang, Xiaoqing Lv, Zan Zhang, Zhengtai Ma   +4 more
doaj   +2 more sources

Ultrasensitive tapered optical fiber refractive index glucose sensor

Scientific Reports, 2023
AbstractRefractive index (RI) sensors are of great interest for label-free optical biosensing. A tapered optical fiber (TOF) RI sensor with micron-sized waist diameters can dramatically enhance sensor sensitivity by reducing the mode volume over a long distance.
Erem Ujah, Meimei Lai, Gymama Slaughter
openaire   +4 more sources

A metal-insulator-metal waveguide-based plasmonic refractive index sensor for the detection of nanoplastics in water [PDF]

Scientific Reports
A metal-insulator-metal waveguide-based square-ring resonator plasmonic refractive index sensor is designed and optimized for achieving high sensitivity.
Shyamal Guchhait, Subhasri Chatterjee, Tapas Chakravarty, Nirmalya Ghosh   +3 more
doaj   +2 more sources

Design of Ultra-Narrow Band Graphene Refractive Index Sensor. [PDF]

Sensors (Basel), 2022
The paper proposes an ultra-narrow band graphene refractive index sensor, consisting of a patterned graphene layer on the top, a dielectric layer of SiO2 in the middle, and a bottom Au layer. The absorption sensor achieves the absorption efficiency of 99.
Shangguan Q, Chen Z, Yang H, Cheng S, Yang W, Yi Z, Wu X, Wang S, Yi Y, Wu P.   +9 more
europepmc   +2 more sources

Slab Waveguide Sensor with Left-handed Material Core Layer for Detection an Adlayer Thickness and Index [PDF]

Журнал нано- та електронної фізики, 2015
A four-layer slab waveguide structure with a lossy left-handed material (LHM) core layer is investigated as a surface sensor for detection any change in an adlayer thickness and refractive index. The sensitivities of the effective refractive index to any
Hani M. Kullab, Ibrahim M. Qadoura, Sofyan A. Taya   +2 more
doaj   +3 more sources

Refractive index desensitized optical fiber temperature sensor

Revista Facultad de Ingeniería Universidad de Antioquia, 2017
An in-line fiber-optic sensor for temperature measurements in environments prone to refractive indices changes is presented. The sensing probe is composed of a single-mode/single-mode optical fiber, arranged in an interferometric configuration.
Yamile Cardona-Maya, Juan Fernando Botero-Cadavid   +1 more
doaj   +4 more sources

Design and analysis of an ultra-high sensitive and tunable metal-insulator-metal waveguide-coupled octagonal ring resonator utilizing gold nanorods

Sensing and Bio-Sensing Research, 2022
In this research paper, we propose a refractive index (RI) based plasmonic nanosensor comprising of metal-insulator-metal (MIM) waveguide and octagonal resonator embedded with gold nanorods.
Nasir Muhammad Munim, Tahmina Tabassum Treena, Mohammad Rakibul Islam, Mirza Muntasir Nishat   +3 more
doaj   +1 more source

Intensity-Modulated Polymer Optical Fiber-Based Refractive Index Sensor: A Review. [PDF]

Sensors (Basel), 2021
The simple and highly sensitive measurement of the refractive index (RI) of liquids is critical for designing the optical instruments and important in biochemical sensing applications.
Teng C, Min R, Zheng J, Deng S, Li M, Hou L, Yuan L.   +6 more
europepmc   +2 more sources