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All Journal INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Ilmu Fisika Jurnal Fisika Indonesia
Kamsul Abraha
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Astronomy Earth & Planetary Sciences Education Energy Materials Science & Nanotechnology Physics

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Kajian Pengaruh Nanopartikel Magnetik Fe3O4 Pada Deteksi Biosensor Berbasis Surface Plasmon Resonance (SPR) Yuan Alfinsyah Sihombing; Kamsul Abraha
Jurnal Ilmu Fisika Vol 9 No 2 (2017): September 2017
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.9.2.121-131.2017

Abstract

Telah dilakukan kajian berkaitan dengan pengaruh nanopartikel Fe3O4 pada deteksi biosensor berbasis  surface plasmon resonance (SPR). Penelitian ini bertujuan untuk melihat penyebab munculnya dip baru atau pergeseran dip ke arah kanan pada kurva ATR (AttenuatedTotalReflection) setelah adanya penambahan nanopartikel magnetik Fe3O4.Sifat magnetik nanopartikel berupa permeabilitas magnet disubstitusikan pada kurva ATR dan sudut SPR terbentuk pada sudut 51,8º; 47,3º; 46,0º dan 45,6º untuk ketebalan perak 10 nm, 20 nm, 30 nm dan 40 nm berturut-turut dengan ketebalan nanopartikel 10 nm.Untuk melihat pengaruh permeabilitas magnet, diplot kurva ATR tanpa permeabilitas magnet. Hasilnya menunjukkan bahwa sudut SPR terbentuk pada sudut yang sama. Sehingga kemunculan dip baru pada panjang gelombang sinar laser 632,8 nm bukan dikarenakan sifat magnetnya. Sifat magnet ini akan muncul pada rentang gelombang mikro. Dengan pendekatan Teori Medium Efektif (TME) Landauer dan Bruggeman untuk sistem empat lapisan prisma/perak/komposit (nanopartikel+udara)/udara, diperoleh kurva relasi dispersi surface plasmon pada angka gelombang ; ;;  dan  untuk variasi fraksi volume  0,1; 0,2; 0,3; 0,4 dan 0,5 berturut-turut mengalami kopling dengan gelombang evanescent. Ini menunjukkan bahwa pergeseran dip muncul dengan pendekatan teori medium efektif Landauer dan Bruggeman. Kata Kunci : Surface Plasmon Resonance (SPR), nanopartikel magnetik Fe3O4,Evanescent, , TME Landauer dan Bruggeman.
Kajian Pengaruh Penambahan Nanopartikel Perak (AgNPs) Terhadap Respon Instrumen Sensing Berbasis Surface Plasmon Resonance (SPR) Tyas Arifani; Kamsul Abraha
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 01 (2013): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i01.1214

Abstract

Theoretical studies have been done related to the phenomenon of surface plasmon resonance (SPR) on the system with addition of silver nanoparticles (AgNPs) that was modeled as a sensing instrument. Model is built with AgNPs placed as an additional layer over the conventional SPR system. Quantitative analysis on the model will provide a response in the form of reflectance spectrum as a function of incident angle that showed SPR angle ( SPR ) point and the attenuation. To know how the AgNPs in various sizes affect the resonance coupling, it will be calculated the dispersion relation curves obtained as the solution of Maxwell’s equations. Coupling between surface plasmon wave and evanescent wave will provide the resonance angle on the intersection of the two curves. Computational analysis of ATR method, demonstrate how the addition of AgNPs in sensing instrument configuration will improve performance of such instruments, visualized by SPR angle shift.
Deteksi Formalin Menggunakan Surface Plasmon Resonance (SPR) Berbasis Nanopartikel Perak sebagai Pengembangan Awal Teknologi Food Safety Muhammad Khoirul Anam; Risma Narindra; Thoyibi T; Kamsul Abraha
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): IJAP VOLUME 03 ISSUE 02 YEAR 2013
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1274

Abstract

The phenomena of surface plasmon resonance (SPR) has been observed. SPR is reflectance curve as a function of incident angle in Kretschmann configuration. Surface plasmon is electromagnetic waves propagation in the interface area between metal and dielectric that can be excited by using attenuated total reflection (ATR) method. The result of experiment explains that the SPR angle on the thin film system of the prism/silver 1 and the prism/silver 2 is (42.8± 0,05)º with the reflectance value 0.32 and 0.44 respectively. On the prism/silver/silver nanoparticle system, it is obtained that SPR angle value is (4,29 ± 0,05) with the reflectance value 0.29 for the silver 1 and 0.31 for the silver 2. After the thin film system is added with 40% of formalin, SPR angle becomes (43,0 ± 0,05)º with the reflectance value 0.44. Then, after the thin film system is added with 100% of formalin, SPR angle becomes (43,2 ± 0,05)ºwith the reflectance value 0.4. The shifting SPR angle shows that SPR have capability as formalin sensor.
A Review Of The Linear Response Function In Condensed Matter Physics And Their Application In Some Elementary Processes Ibnu Jihad; Kamsul Abraha
Jurnal Fisika Indonesia Vol 20, No 3 (2016)
Publisher : Department of Physics Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfi.v20i3.56138

Abstract

Linear response theory in quantum theory with its linear response function and its quantization process has been formulated. The relation between the linear response function with its generalized susceptibility, its symmetry properties, and its analyticity has been studied. These properties produce the dispersion relation or Kramers-Kronig relation. The explicit form of the quantum response function and generalized susceptibility also been reviewed. Applications of linear response functions have been described for three elementary processes. The process discussed is the magnetic field disturbance in the magnetic system that generates magnetic susceptibility, and the electric field disturbance in the electrical system that generates electrical conductivity tensor and the ferromagnet Heisenberg that generates its generalized susceptibility.
Co-Authors Ibnu Jihad Muhammad Khoirul Anam Risma Narindra Thoyibi T Tyas Arifani Yuan Alfinsyah Sihombing