scholarly journals A Naked Eye Refractive Index Sensor with a Visible Multiple Peak Metamaterial Absorber

Sensors ◽  
2015 ◽  
Vol 15 (4) ◽  
pp. 7454-7461 ◽  
Author(s):  
Heli Ma ◽  
Kun Song ◽  
Liang Zhou ◽  
Xiaopeng Zhao
Keyword(s):  
Refractive Index ◽  
Metamaterial Absorber ◽  
Refractive Index Sensor ◽  
Multiple Peak ◽  
Naked Eye

Metamaterial optical refractive index sensor detected by the naked eye

2013 ◽  
Vol 102 (9) ◽  
pp. 091902 ◽  
Author(s):  
Xiaonong Wang ◽  
Chunrong Luo ◽  
Gang Hong ◽  
Xiaopeng Zhao
Keyword(s):  
Refractive Index ◽  
Refractive Index Sensor ◽  
Naked Eye

A Terahertz Metamaterial Absorber Based Refractive Index Sensor with High Quality Factor

2021 ◽  
Author(s):  
Sagnik Banerjee ◽  
Uddipan Nath ◽  
Shruti ◽  
Amitkumar V. Jha ◽  
Sasmita Pahadsingh ◽  
...  
Keyword(s):  
Refractive Index ◽  
Quality Factor ◽  
Metamaterial Absorber ◽  
High Quality Factor ◽  
Refractive Index Sensor ◽  
High Quality

scholarly journals A Theoretical Terahertz Metamaterial Absorber Structure with a High Quality Factor Using Two Circular Ring Resonators for Biomedical Sensing

Inventions ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 78
Author(s):  
Sagnik Banerjee ◽  
Uddipan Nath ◽  
Purba Dutta ◽  
Amitkumar Vidyakant Jha ◽  
Bhargav Appasani ◽  
...  
Keyword(s):  
Refractive Index ◽  
Quality Factor ◽  
Metamaterial Absorber ◽  
Circular Ring ◽  
Ring Resonators ◽  
Radiation Absorption ◽  
Refractive Index Sensor ◽  
Perfect Absorption ◽  
Biomedical Sensing ◽  
Sensing Applications

Metamaterial absorbers, on account of their inherent property of electromagnetic radiation absorption, have become a center of attraction for many researchers in recent times. This paper proposes a unique design of a terahertz metamaterial absorber that can be used to sense biomedical samples. The proposed design consists of two identical circular ring resonators (CRRs) made of aluminum on top of a gallium arsenide (GaAs) substrate. On account of its high field confinement in the sensing regime, a near-to-perfect absorption rate of 99.50% is achieved at a frequency of 2.64 THz, along with a large quality factor (Q-Factor) of 44. The design is highly sensitive to the refractive index changes in the encompassing medium. Hence, the proposed absorber can be used as a refractive index sensor exhibiting a reasonable sensitivity of 1500 GHz/RIU and a figure of merit (FoM) of 25. The refractive index range has been varied in the range of 1.34 to 1.39. As many biomedical samples, including cancerous cells, reside within this range, the proposed sensor can be used for biomedical sensing applications.

scholarly journals Refractive Index Sensor for Salty and Sugary Solution Based on Optical Fiber Technical

2021 ◽  
Vol 1879 (3) ◽  
pp. 032077
Author(s):  
Maher Khaleel Ibrahim ◽  
Shehab A Kadhim ◽  
Nabeil Ibrahim Fawaz
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Refractive Index Sensor
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