scholarly journals Surface Plasmon Resonance Responses of Au-SnOxNanocomposite Films

2009 ◽  
Vol 1208 ◽  
Author(s):  
Dongfang Yang

AbstractAu-SnOxnanocomposite thin films composed of gold nanoparticles embedded in SnOxmatrix were prepared by pulsed laser deposition technique and their crystal structure, morphology and chemical composition were evaluated by low angle X-ray diffraction, field-emission scanning electron microscopy and x-ray photoelectron spectroscopy, respectively. For the nanocomposite films with high Au percentage, the surfaces of nanocomposite films are very smooth, while for the films with low Au percentage, the films consist of many embedded Au nanoparticles with particle size of 5-20 nm. The XRD results revealed that in the nanocomposite films Au existed in a polycrystalline phase while SnOxin an amorphous phase. Surface plasmon resonance (SPR) responses of the Au-SnOxnanocomposite thin films were investigated as functions of Au percentage and film thickness in the Kretschmann geometry of attenuated total reflection using a polarized light beam at the wavelength of 640 nm. The reflectance minima (SPR dip) of SPR responses of the Au-SnOxnanocomposite films appeared at higher values of incident angle than that of a pure Au film and as the Au percentage decreases the SPR angles shift to higher values and the widths also become broader. The potential use of Au-SnOxnanocomposite films for SPR gas sensing was discussed.

2014 ◽  
Vol 16 (12) ◽  
Author(s):  
J. Borges ◽  
M. Buljan ◽  
J. Sancho-Parramon ◽  
I. Bogdanovic-Radovic ◽  
Z. Siketic ◽  
...  

2016 ◽  
Vol 3 (02) ◽  
pp. 201
Author(s):  
Muhammad Khoirul Anam ◽  
Risma Narindra ◽  
Thoyibi T ◽  
Kamsul Abraha

<span>The phenomena of surface plasmon resonance (SPR) has been observed. SPR is reflectance <span>curve as a function of incident angle in Kretschmann configuration. Surface plasmon is elec<span>tromagnetic waves propagation in the interface area between metal and dielectric that can be <span>excited by using attenuated total reflection (ATR) method. The result of experiment explains <span>that the SPR angle on the thin film system of the prism/silver 1 and the prism/silver 2 is (42.8<br /><span>± 0,05)º with the reflectance value 0.32 and 0.44 respectively. On the prism/silver/silver <span>nanoparticle system, it is obtained that SPR angle value is (4,29 ± 0,05) with the reflectance <span>value 0.29 for the silver 1 and 0.31 for the silver 2. After the thin film system is added with <span>40% of formalin, SPR angle becomes (43,0 ± 0,05)º with the reflectance value 0.44. Then, af<span>ter the thin film system is added with 100% of formalin, SPR angle becomes (43,2 ± 0,05)º<br /><span>with the reflectance value 0.4. The shifting SPR angle shows that SPR have capability as <span>formalin sensor.</span></span></span></span></span></span></span></span></span></span></span><br /></span>


2020 ◽  
Vol 23 (1) ◽  
pp. 27
Author(s):  
Rina Dewi Mayasari ◽  
Ajeng Novita Sari ◽  
Aditya Eka Mulyono ◽  
Agus Setyo Budi ◽  
Ratno Nuryadi

Pengamatan fenomena surface plasmon resonance (SPR) telah berhasil dilakukan pada ZnO nanorods yang ditumbuhkan di atas lapisan tipis emas. Sistem SPR menggunakan konfigurasi Kretschmann termodifikasi dimana permukaan prisma dideposisi dengan lapisan tipis emas dan ZnO nanorods (prisma/Au/ZnO). Penumbuhan ZnO nanorods menggunakan metode hidrotermal dengan dua tahapan, yaitu pelapisan ZnO seed dan penumbuhan rods. Waktu penumbuhan divariasikan selama 5 menit, 2 jam, dan 4 jam, pada suhu 95 °C yang diikuti dengan annealing pada suhu 500 °C selama 1 jam. Struktur ZnO dikarakterisasi dengan X-ray diffraction (XRD), field emission scanning electron microscope - energy dispersive X-ray spectroscopy (FESEM-EDS), serta diamati fenomena SPR melalui grafik attenuated total reflection (ATR). Hasil karakterisasi menunjukkan bahwa ZnO nanorods (2 jam dan 4 jam) memiliki struktur kristal heksagonal dengan distribusi ukuran diameter pada rentang 20 nm – 60 nm. Fenomena SPR hanya teramati pada nanopartikel ZnO (5 menit) pada sudut SPR (θSPR) 58,2°. Fenomena SPR tidak terlihat pada ZnO nanorods (2 jam dan 4 jam) dikarenakan panjang rods melebihi 100 nm.


2010 ◽  
Vol 107 (10) ◽  
pp. 103924 ◽  
Author(s):  
K. Yang ◽  
C. Clavero ◽  
J. R. Skuza ◽  
M. Varela ◽  
R. A. Lukaszew

2009 ◽  
Vol 19 (48) ◽  
pp. 9233 ◽  
Author(s):  
Rachid Gradess ◽  
Rafael Abargues ◽  
Abderrahim Habbou ◽  
Josep Canet-Ferrer ◽  
Esteban Pedrueza ◽  
...  

2016 ◽  
Vol 49 (12) ◽  
pp. 125503
Author(s):  
A Serrano ◽  
O Rodríguez de la Fuente ◽  
C Monton ◽  
A Muñoz-Noval ◽  
I Valmianski ◽  
...  

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