Design and analysis of prism-based surface plasmon resonance optical sensor for detection of ammonia gas

Vikash Kumar; Sanjeev Kumar Raghuwanshi; Santosh Kumar

doi:10.1117/12.2648935

16 March 2023 Design and analysis of prism-based surface plasmon resonance optical sensor for detection of ammonia gas

Vikash Kumar, Sanjeev Kumar Raghuwanshi, Santosh Kumar

Proceedings Volume 12396, Plasmonics in Biology and Medicine XX; 1239609 (2023) https://doi.org/10.1117/12.2648935
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

Surface plasmon resonance (SPR) sensors are extensively used in a variety of applications. In the proposed investigation, SPR phenomena are used to detect toxic gases by employing a multilayer sensing chip. A glass prism is coated with a nano composite thin film based on different materials: gold (Au), titanium dioxide (TiO₂), and molybdenum disulfide (MoS₂). The ammonia gas is applied to the MoS₂ sensing layer of the multilayer optical sensing chip. As the ammonia gas concentration rises around the multilayer sensing structure, the resonance angle increases, indicating that the MoS2 layer refractive index has gone up significantly due to absorption of the increasing ammonia gas concentration. The measured ammonia gas concentration is based on an angle interrogation approach. The sensor performance has also been optimized for varied MoS₂ and Au layer thicknesses. This article has all the mathematical equations that are needed, and MATLAB software is used to check the results.

Conference Presentation

Citation Download Citation

Vikash Kumar, Sanjeev Kumar Raghuwanshi, and Santosh Kumar "Design and analysis of prism-based surface plasmon resonance optical sensor for detection of ammonia gas", Proc. SPIE 12396, Plasmonics in Biology and Medicine XX, 1239609 (16 March 2023); https://doi.org/10.1117/12.2648935

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available