Studi Keadaan Resonansi Pada Sistem Surface Plasmon Resonance

Faza, Reyhan Awaliyah (2024) Studi Keadaan Resonansi Pada Sistem Surface Plasmon Resonance. Masters thesis, Institut Teknologi Sepuluh Nopember.

Text 6001221005-Master_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 October 2026. Download (26MB) | Request a copy

Abstract

Resonansi antara cahaya dan elektron dikenal sebagai Surface Plasmon Resonance atau SPR. Prisma dengan konfigurasi Kretschmann digunakan untuk pengembangan sistem sensor. Pada konfigurasi Otto Medium dielektrik terletak di antara prisma dan thin film emas. Untuk konfigurasi Kretschmann, thin film emas berada di antara prisma dan medium dielektrik. Jadi, penelitian ini berfokus pada penggunaan konfigurasi Kretschmann pada sistem SPR karena pengaturan prisma setengah silinder lebih mudah dibandingkan dengan menggunakan konfigurasi Otto. Dalam penelitian ini, kami membandingkan resonansi prisma setengah silinder yang tidak dilapisi dan prisma setengah silinder yang dilapisi dengan thin film emas untuk melihat sudut resonansi. Sinar yang dipantulkan pada prisma dideteksi dengan menggunakan sensor fotodioda (OPT-101, Texas Instruments). Sensor fotodioda dihubungkan ke Arduino Uno, dan hasil pembacaan tegangan diproses dengan perangkat lunak Arduino Ide. Sudut datang yang ditentukan pada laser He-Ne sebesar 30-50 Derajat. Hasil eksperimen menunjukkan bahwa fenomena TIR (pemantulan internal total) terjadi pada prisma setengah silinder tanpa lapisan.Sementara itu, pada prisma setengah silinder yang dilapisi oleh thin film emas, fenomena resonansi dapat terlihat, dalam hal ini, pada sudut datang tertentu, dapat dideteksi melalui pengurangan intensitas berkas cahaya yang dipantulkan. Sensor fotodioda mendeteksi penurunan nilai reflektansi, yang mengindikasikan penurunan intensitas cahaya.
=================================================================================================================================
Resonance between light and collective electrons is known as Surface Plasmon Resonance or SPR. The development of SPR-based sensors can be generated the use of a Kretschmann configuration prism. Otto configuration dielectric medium between prism and gold thin film. For the Kretschmann configuration, a gold thin film between the prism and dielectric medium. So, this research focuses on the use of the Kretschmann configuration in the SPR system because the setup of the half-cylindrical prism is less complicated than using the Otto configuration. In this research, we compare the reflectance of an uncoated half-cylindrical prism and a half cylindrical prism coated with a gold thin film to see the resonance effect. The beam reflected by the back surface of the prism was detected using a photodiode sensor (OPT-101, Texas Instruments). The photodiode sensor is connected to Arduino Uno, and the voltage reading results are processed with Arduino Ide software. Adjusting the He-Ne laser light’s angle of incidence and the prism’s angle of impact 30-50 Degree. The experimental results show that the TIR (total internal reflection) phenomenon occurs in half-cylindrical prisms without a gold coating. Meanwhile, inthehalf-cylindrical prism coated with gold,a resonance phenomenon can be seen, this case, at a particular angle of incidence, can be detected through a reduction in the beam’s intensity of the reflected light. The photodiode sensor detects a decrease in voltage value, which indicates an intensity decrease.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	half-cylindrical prism, photodiode sensors, surface plasmon resonance (spr), voltage, prisma setengah silinder, sensor fotodioda, tegangan
Subjects:	Q Science > QC Physics > QC100.5 Measuring instruments (General) Q Science > QC Physics > QC271.8.C3 Calibration Q Science > QC Physics > QC457 Infrared technology.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45101-(S2) Master Thesis
Depositing User:	Reyhan Awaliyah Faza
Date Deposited:	04 Sep 2024 07:18
Last Modified:	04 Sep 2024 07:18
URI:	http://repository.its.ac.id/id/eprint/113424

Actions (login required)

View Item