scholarly journals Pengamatan Surface Plasmon Resonance pada ZnO Nanorods dengan Menggunakan Konfigurasi Prisma/Au/ZnO

2020 ◽  
Vol 23 (1) ◽  
pp. 27
Author(s):  
Rina Dewi Mayasari ◽  
Ajeng Novita Sari ◽  
Aditya Eka Mulyono ◽  
Agus Setyo Budi ◽  
Ratno Nuryadi
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Zno Nanorods ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
X Ray Diffraction ◽  
X Ray ◽  
20 Nm ◽  
Scanning Electron

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.

scholarly journals Surface Plasmon Resonance Responses of Au-SnOxNanocomposite Films

2009 ◽  
Vol 1208 ◽  
Author(s):  
Dongfang Yang
Keyword(s):  
Thin Films ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Incident Angle ◽  
Attenuated Total Reflection ◽  
Nanocomposite Films ◽  
Diffraction Field ◽  
X Ray ◽  
Nanocomposite Thin Films

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.

scholarly journals Surface Plasmon Resonance Sensor Based on Polypyrrole–Chitosan–BaFe2O4 Nanocomposite Layer to Detect the Sugar

2020 ◽  
Vol 10 (8) ◽  
pp. 2855 ◽  
Author(s):  
Amir Reza Sadrolhosseini ◽  
Pooria Moozarm Nia ◽  
Mahmoud Naseri ◽  
Ahmad Mohammadi ◽  
Yap Wing Fen ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Surface Plasmon Resonance Sensor ◽  
X Ray Diffraction ◽  
X Ray ◽  
Nanocomposite Layer ◽  
Low Concentrations ◽  
Resonance Sensor ◽  
Field Emission Electron Microscopy

The surface plasmon resonance sensor was used to detect and measure low concentrations of sugar. A polypyrrole–chitosan–BaFe2O4 nanocomposite layer was prepared to improve the surface of the gold layer for the detection of glucose, fructose, and sucrose using the surface plasmon resonance technique. The polypyrrole–chitosan–BaFe2O4 was synthesized using the electrodeposition method in different thicknesses. The functional group, crystal structure, and morphology of the layer were investigated with Fourier transform infrared spectroscopy, X-ray diffraction technique, and field emission electron microscopy. Consequently, the BaFe2O4 was scattered on the surface of the polymer, and the affinity of polypyrrole–chitosan–BaFe2O4 to bond with glucose is higher than that for the other sugars. The sensor limit was 0.005 ppm.

Direct Synthesis of Pure Radiative Vo2 (M) Plate Like Structures Via Hydrothermolysis at Low Temperature

2012 ◽  
Vol 1406 ◽  
Author(s):  
A. Simo ◽  
L.C. Edomwonyi-Otu ◽  
R. Madjoe ◽  
M. Maaza
Keyword(s):  
Direct Synthesis ◽  
High Surface ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
X Ray Diffraction ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Vibrational Bands ◽  
High Surface Energy ◽  
Scanning Electron

ABSTRACTFacile and direct synthesis of radiative VO2 (M) plate-like is reported. The snowflake material presents superstructures plate-like aggregate with an anisotropic orientation in shape governed by V2O5 and NaOH concentration giving high surface energy liable for chemical reactions with the medium. Pure crystalline VO2 (M) has been obtained with a complete hydrothermolysis of the precursor. The morphological, structural, elemental composition, crystallinity and vibrational bands of the powders were characterized by Powder X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Selected Area Electron Diffraction (SAED) and Fourier Transform-Attenuated Total Reflection (FTIR-ATR) infrared spectroscopy.

Sign in / Sign up

Export Citation Format

Share Document