Affiliation:
1. Universidad Marista, San Luis Potosí
2. CIATEQ A.C
3. CIACYT-UASLP
4. Universidad Politécnica de San Luis Potosí, S.L.P. México
5. Instituto Tecnológico de San Luis Potosi
6. CONACYT–CIATEQ A.C
Abstract
Abstract
The biotechnology sector is focusing on developing biosensors that allow us to detect and monitor substances in vivo using non-invasive methods. For example, in substances detection using the label-less method, radiation in the mid-infrared (mid-IR) has been used to obtain the vibrational fingerprint. In this work, we propose to use plasmonic nanoantennas called spaceship to develop a SEIRA substrate that can be used in disease detection. The spaceship nanoantennas were fabricated using electron beam lithography. A potential SEIRA device was fabricated with Au spaceship nanoantennas based on crop circles with dimensions of 5.5 µm long and 5 µm high. The resonance frequency (νres) was analyzed using gold nanoantennas absorbance as a function of frequency where one peak wasfound at 33THz. Additionally, these results were corroborated with a simulation where the magnitude of the electric field E = 7.79 V/m at 30.02 THz was found, and in E = 3.42 V/m at 79.97 THz is shown. These results allow us to propose spaceship nanoantennas as good candidates for the design of a SEIRA substrate.
Publisher
Research Square Platform LLC
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