Raman studies of optical phonons in vertical cadmium sulfide nanorod arrays

2006 ◽  
Vol 21 (11) ◽  
pp. 2911-2915 ◽  
Author(s):  
Dongjuan Xi ◽  
Jianzhong Li ◽  
Qibing Pei ◽  
Bin Chen
Keyword(s):  
Raman Spectroscopy ◽  
Cadmium Sulfide ◽  
Nanorod Arrays ◽  
Electron Phonon Interaction ◽  
Cds Nanorods ◽  
Average Aspect Ratio ◽  
Vertically Aligned ◽  
Resonant Raman ◽  
Surface Phonon Mode ◽  
Fifth Order

Electrochemically grown cadmium sulfide (CdS) nanorod arrays were studied with Raman spectroscopy. The resonant Raman spectroscopy unravels the enhanced electron-phonon interaction up to the fifth-order multiphonon process in the vertically aligned CdS nanorods after annealing. Resonant Raman scattering at room temperature reveals a surface phonon mode at 253 cm−1 in the annealed nanorod. This unprecedented observation is accounted for by the lateral confinement in the nanorod whose average aspect ratio is approximately 5. An intersubband transition near 3000 cm−1 is also observed. These results point to important optoelectronic applications of this material.

scholarly journals Chemical constitution of polyfurfuryl alcohol investigated by FTIR and Resonant Raman spectroscopy

2021 ◽  
pp. 120090
Author(s):  
Francesco D'Amico ◽  
Maurizio E. Musso ◽  
Raphael J.F. Berger ◽  
Nicola Cefarin ◽  
Giovanni Birarda ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Polyfurfuryl Alcohol ◽  
Chemical Constitution ◽  
Resonant Raman

Combining vancomycin-modified gold nanorod arrays and colloidal nanoparticles as the sandwich model for discrimination of gram-positive bacteria and their detection via surface-enhanced Raman spectroscopy (SERS)

The Analyst ◽  
2021 ◽  
Author(s):  
Araz Norouz Dizaji ◽  
Nihal Simsek Ozek ◽  
Ferhunde Aysin ◽  
Ayfer Calis ◽  
Asli Yilmaz ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Colloidal Nanoparticles ◽  
Nanorod Arrays ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Sensor Platform ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

This study reports the development of a highly sensitive antibiotic-based discrimination and sensor platform for the detection of gram-positive bacteria through surface-enhanced Raman spectroscopy (SERS). Herein, the combination of gold...

Fabrication of Morphology Controllable Vertically Aligned TiO2 Nanorod Arrays for Dye-Sensitized Solar Cells

2016 ◽  
Vol 680 ◽  
pp. 278-281 ◽  
Author(s):  
Fen Li ◽  
Su Juan Hu ◽  
Li Dong Wei ◽  
Bo Chi ◽  
Jian Li
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Growth Direction ◽  
Nanorod Arrays ◽  
Coated Glass Substrate ◽  
Rutile Structure ◽  
Dye Sensitized ◽  
Vertically Aligned ◽  
Sensitized Solar Cells ◽  
Different Thickness

In this work, vertically aligned TiO2 nanorod arrays (NR) are synthesized directly on FTO coated glass substrate by hydrothermal method. The samples are characterized by XRD, SEM, TEM and the results indicate that the 1-D nanorods are of single crystal rutile structure with growth direction along the [001] direction. The morphology (diameter, thickness and density) of the nanorods can be adjusted by changing the precursor amounts. The possible growth mechanism of TiO2 nanorods on FTO substrate has also been briefly discussed in this work. For dye-sensitized solar cells (DSSCs) fabricated of different thickness nanorods, a power conversion efficiency (PCE) of 1.74% has been achieved by using ~3μm nanorod arrays under simulated AM 1.5 illumination (100 mW cm-2). It is expected that the 1-D nanorods can be composited with other nanomaterial of different structures and morphologies to enhance the efficiency of DSSCs.

Excited Excitonic States in 1L, 2L, 3L, and Bulk WSe2 Observed by Resonant Raman Spectroscopy

ACS Nano ◽  
2014 ◽  
Vol 8 (9) ◽  
pp. 9629-9635 ◽  
Author(s):  
Elena del Corro ◽  
Humberto Terrones ◽  
Ana Elias ◽  
Cristiano Fantini ◽  
Simin Feng ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Resonant Raman ◽  
Excitonic States

Physically Self-assembled Au Nanorod Arrays for SERS

2006 ◽  
Vol 951 ◽  
Author(s):  
Motofumi Suzuki ◽  
Kaoru Nakajima ◽  
Kenji Kimura ◽  
Takao Fukuoka ◽  
Yasushige Mori
Keyword(s):  
Raman Spectroscopy ◽  
Low Cost ◽  
Major Axis ◽  
Surface Enhanced Raman Spectroscopy ◽  
Nanorod Arrays ◽  
Au Nanorods ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Oblique Deposition ◽  
Selection Of

ABSTRACTWe have demonstrated surface-enhanced Raman spectroscopy on arrays of Au nanorods aligned in line by a dynamic oblique deposition technique. For the light polarized along the major axis of the nanorods, the plasma resonance of the Au nanorods has been tuned to a wavelength suitable for Raman spectroscopy. The Raman scattering on the discrete nanorods is enhanced significantly compared with that on semi continuous Au films. Since the preparation process is physically bottom-up, it is robust in its selection of the materials and is useful in providing the SERS sensors at low cost.

Frequency measurements of hyperfine splittings in ground rovibronic states of I by stimulated resonant Raman spectroscopy

1999 ◽  
Vol 6 (1) ◽  
pp. 63-76
Author(s):  
J.-P. Wallerand ◽  
F. du Burck ◽  
B. Mercier ◽  
A.N. Goncharov ◽  
M. Himbert ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Frequency Measurements ◽  
Resonant Raman ◽  
Hyperfine Splittings

Growth of Vertically Aligned InGaN Nanorod Arrays on p-Type Si Substrates for Heterojunction Diodes

2010 ◽  
Vol 10 (12) ◽  
pp. 8139-8144 ◽  
Author(s):  
Kemin Wu ◽  
Tao Han ◽  
Kai Shen ◽  
Bo Liu ◽  
Ting Peng ◽  
...  
Keyword(s):  
Nanorod Arrays ◽  
Si Substrates ◽  
Vertically Aligned ◽  
Heterojunction Diodes
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