Association Mission

The mission of the association is to advance the creation, communication and application of knowledge to benefit society and improve people's lives.  

Legal Members

 

Membership

Volume 25 - ICOP & ICPET 2019                   ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 1021-1024 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Nasiri A, Asadishad T, Hamidi S M. Design of Highly sensitive 2D plasmonic refractive index biosensor. ICOP & ICPET _ INPC _ ICOFS 2019; 25 :1021-1024
URL: http://opsi.ir/article-1-1658-en.html
1- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
Abstract:   (1764 Views)
During the last few years with the significant developments in nano­science and technology, a new field of science has been introduced which made it possible for human to design and manufacture the applications such as nano biosensors. These nanostructures with a dimension which is less than the wavelength of the exciting incident wave are made of metal and dielectric layers. The surface plasmons are the result of the interaction between electromagnetic waves and free electrons mass at the shared boundary of metal and dielectric. Since the propagation constant of these waves is strongly dependent on the changes in the dielectric medium, this feature of plasmons are used to detect the changes in mediums. In this biosensor, the information of these changes in mediums can be achieved by analyzing the structures optic response variation. The proposed plasmonic structure in this paper, as a refractive index sensor, is a kind of sensor with a simple structure which has a period of 800 nm, which is easy to operate due to the use of gold and Poly-dimethyl-siloxane polymers in the structure. Favorable results were reached by optimizing the structure in near infrared range and studying the absorption spectrum of the structure for two samples of water and neurons, which showed that this structure with 77% absorption, sensitivity 715 and figure of merit 12.4% is suitable for the sensor applications in the medicine.
Full-Text [PDF 1346 kb]   (352 Downloads)    
Type of Study: Research | Subject: Special

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 All Rights Reserved | Optics and Photonics Society of Iran

Designed & Developed by : Yektaweb