Journal of Raman Spectroscopy

Cover image for Vol. 44 Issue 5

May 2013

Volume 44, Issue 5

Pages 651–794

  1. Rapid communication

    1. Top of page
    2. Rapid communication
    3. Research articles
    4. Short communication
    1. Probing crystallographic orientation of a single GaN nanotube using polarized Raman imaging (pages 651–654)

      Avinash Patsha, Prasana Sahoo, S. Dhara, S. Amirthapandian and A. K. Tyagi

      Version of Record online: 16 FEB 2013 | DOI: 10.1002/jrs.4262

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      Crystallographic orientation of a highly anisotropic square-shaped single GaN nanotube (NT) is probed by polarized Raman imaging. The study reveals that not only the crystalline orientations of facets of the NT but also the inhomogeneity in the crystalline orientations along the edges of the NT facets.

  2. Research articles

    1. Top of page
    2. Rapid communication
    3. Research articles
    4. Short communication
    1. Influence of applied potential on bradykinin adsorption onto Ag, Au, and Cu electrodes (pages 655–664)

      Edyta Proniewicz, Dominika Skołuba, Ilja Ignatjev, Gediminas Niaura, Dariusz Sobolewski, Adam Prahl and Leonard M. Proniewicz

      Version of Record online: 29 JAN 2013 | DOI: 10.1002/jrs.4246

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      Surface-enhanced Raman scattering, electrochemistry, and generalized two-dimensional correlation analysis methods were used to characterize bradykinin (BK), a hormone which is known to be involved in small-cell and non-small-cell lung carcinoma and prostate cancer. BK was deposited onto Ag, Au, and Cu electrode surfaces under different applied electrode potentials (−1.000 V to 0.200 V). Based on the analysis of the enhancement, the broadening, and the shifts in the wavenumbers of individual bands, specific conclusions were drawn regarding the peptide geometry and changes in this geometry that occurred when the electrode type and applied electrode potential were varied.

    2. Study of carrier concentration profiles in Al-implanted Ge by micro-Raman spectroscopy under different excitation wavelengths (pages 665–669)

      A. Sanson, M. Giarola, E. Napolitani, G. Impellizzeri, V. Privitera, A. Carnera and G. Mariotto

      Version of Record online: 14 MAR 2013 | DOI: 10.1002/jrs.4249

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      The distribution profile of Al implanted in crystalline Ge has been investigated by micro-Raman spectroscopy under different excitation laser lines, corresponding to different optical penetration depths. A fast and non-destructive method, based on micro-Raman spectroscopy, is proposed to estimate the carrier profiles in Ge.

    3. Revealing the secondary structural changes of amyloid β peptide by probing the spectral fingerprint characters (pages 670–674)

      Qian Wang, Yuanmin Wang and H. Peter Lu

      Version of Record online: 16 FEB 2013 | DOI: 10.1002/jrs.4253

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      Different amyloid β aggregation forms are probed in real time by combining correlated approaches such as shell-isolated surface-enhanced Raman spectroscopy, thioflavin T fluorescence assay, and atomic force microscopy imaging. Theoretical calculations of the Raman shifts provide possible mechanisms of amyloid β secondary structure change during aggregation.

    4. Raman spectroscopy of combinatory anticancer drug release from gold nanoparticles inside a single leukemia cell (pages 675–679)

      E.-O. Ganbold, J. K. Byun, S. Y. Lee and S.-W. Joo

      Version of Record online: 18 MAR 2013 | DOI: 10.1002/jrs.4266

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      Combinatory anticancer drug release using gold nanoparticles in K562 human myeloid leukemia cells was monitored using Raman spectroscopy.

    5. Application of silver nanoparticle-based SERS spectroscopy for DNA analysis in radiated nasopharyngeal carcinoma cells (pages 680–685)

      Lin Ou, Yang Chen, Ying Su, Yangwen Huang, Rong Chen and Jinping Lei

      Version of Record online: 25 FEB 2013 | DOI: 10.1002/jrs.4269

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      We explore the application of silver nanoparticlebased SERS for analyzing DNA of NPC cell line after X-ray radiation. Both SERS spectroscopy and statistical analysis show that the DNA extracted after 72 h of incubation has significant divisions with control group.

    6. Tuning SERS for living erythrocytes: Focus on nanoparticle size and plasmon resonance position (pages 686–694)

      N. A. Brazhe, E. Y. Parshina, V. V. Khabatova, A. A. Semenova, A. R. Brazhe, A. I. Yusipovich, A. S. Sarycheva, A. A. Churin, E. A. Goodilin, G. V. Maksimov and O. V. Sosnovtseva

      Version of Record online: 2 MAR 2013 | DOI: 10.1002/jrs.4274

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      We designed SERS experiments on living erythrocytes to estimate dependence of the enhancement factor for main Raman bands of submembrane hemoglobin (Hbsm) on properties of silver nanoparticles (AgNP). We show that the enhancement of Hbsm Raman scattering increases with the decrease in AgNP size and plasmon resonance shift to shorter wavelengths. The results can be explained the ability of smaller AgNPs to get deeper into nano-invaginations of the plasma membrane than larger AgNPs.

    7. SERS as a valuable tool for detection and treatment follow-up of fungal infection in mice lungs: use of Amphotericin B and its nanoencapsulation onto magnetic nanoparticles (pages 695–702)

      C. M. B. Santos, S. W. da Silva, C. A. Saldanha, M. F. M. Almeida Santos, M. P. Garcia, R. B. Azevedo and P. C. Morais

      Version of Record online: 25 FEB 2013 | DOI: 10.1002/jrs.4259

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      Analysis of surface-enhanced Raman scattering spectra recorded in tissue samples collected from the lungs of Paracoccidioidomycosis-infected and non-infected mice provided information regarding the therapeutic response while using magnetic nanoparticles surface functionalized with Amphotericin B (AmB) and free AmB. It was found that both AmB-based treatments lead to the same result, although NP-Amp carries substantially lower (40%) drug doses

    8. Robust analysis of multiplexed SERS microscopy of Ag nanocubes using an alternating minimization algorithm (pages 703–709)

      Yaqi Chen, Christine H. Moran, Zhao Tan, A. Lake Wooten and Joseph A. O'Sullivan

      Version of Record online: 25 FEB 2013 | DOI: 10.1002/jrs.4241

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      We present an estimation-theoretic method for jointly recovering both the constituent spectra and mixture coefficients from multiplex surface-enhanced Raman spectroscopy (SERS) spectra. Advantages of this method include: accurate extraction of component spectra; robustness against large random noise; physically significant results; low fitting error for the mixed signal; and guaranteed convergence toward the global minimum. The accuracy of our method was validated by applying it to a SERS spectra fitting problem and comparing our results to those from existing methods.

    9. Protecting TERS probes from degradation: extending mechanical and chemical stability (pages 710–716)

      Rebecca L. Agapov, Alexei P. Sokolov and Mark D. Foster

      Version of Record online: 27 FEB 2013 | DOI: 10.1002/jrs.4268

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      We have shown that adding a protective alumina layer to a silver plasmonic structure greatly reduces chemical degradation at the plasmonic surface. We ascribe the observed significant increase in storage and scanning use lifetimes of the protected plasmonic structures to the chemical protection provided by the thin alumina layers. Storage life of silver structures is extended to three months and scanning lifetimes are increased by a factor of two.

    10. SERS signal response and SERS/SERDS spectra of fluoranthene in water on naturally grown Ag nanoparticle ensembles (pages 717–722)

      Robert Ossig, Anna Kolomijeca, Yong-Hyok Kwon, Frank Hubenthal and Heinz-Detlef Kronfeldt

      Version of Record online: 18 MAR 2013 | DOI: 10.1002/jrs.4270

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      A naturally grown Ag nanoparticle ensemble with a SPR wavelength at 491 nm was prepared by Volmer–Weber growth under ultrahigh vacuum condition. The surface enhanced Raman scattering (SERS) signal response and the SERS characteristics for fluoranthene in water were investigated with SERS/shifted excitation Raman difference spectroscopy using a Raman setup containing a microsystem light source at 488 nm. Research results reveal that SERS signal response time and detection limit are 9 min and 2 nmol/l, respectively.

    11. A rapid technique for synthesis of metallic nanoparticles for surface enhanced Raman spectroscopy (pages 723–726)

      Jonathan Mbah, Kiara Moorer, Leonardo Pacheco-Londoño, Samuel Hernandez-Rivera and Gabriel Cruz

      Version of Record online: 25 FEB 2013 | DOI: 10.1002/jrs.4272

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      Zero valent silver fused with a manufactured carbon-fiber sheet referred to in this context as (Ag–C) was used as a surface enhanced Raman scattering (SERS) substrate to detect 2, 4-dinitrotoluene (DNT), an explosive material. Essentially, the silver on the sheet served as a control group. A detection of 50 ppm was established with Raman. Thus, SERS provided results separate from those collected with blank carbon sheet alone, helping indicate the presence of DNT.

    12. High-resolution stimulated Raman study of the first vibrational hot band of 14N2. Separate observation of the spectra of the ortho and para species. (pages 727–730)

      R. Z. Martínez and D. Bermejo

      Version of Record online: 29 JAN 2013 | DOI: 10.1002/jrs.4245

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      High-resolution stimulated Raman spectra of the first hot band of nitrogen, 14 N2, have been obtained under conditions of low sample pressure and temperature thanks to the use of an optical pumping system. Analysis of the spectra has yielded improved values for the molecular constants obtained. Additionally, the rotational selectivity of the pumping process coupled with the negligible probability of nuclear spin interconversion in the time frame of the experiment has allowed the observation of the hot band spectra of the ortho and para species of 14 N2 separately.

    13. High-resolution stimulated Raman spectroscopy and analysis of the ν1, 2ν1ν1, ν2, 2ν2, and 3ν2ν2 bands of CF4 (pages 731–738)

      V. Boudon, D. Bermejo and R. Z. Martínez

      Version of Record online: 3 FEB 2013 | DOI: 10.1002/jrs.4248

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      High-resolution stimulated Raman spectra of several cold and hot bands of CF4 have been recorded. They could be assigned and fitted, leading to reliable spectrum simulations. The C–F equilibrium bond length has also been accurately determined.

    14. Hyper-Raman and Raman scattering in paratellurite TeO2 (pages 739–745)

      Vincent Rodriguez, Michel Couzi, Frédéric Adamietz, Marc Dussauze, Guillaume Guery, Thierry Cardinal, Philippe Veber, Kathleen Richardson and Philippe Thomas

      Version of Record online: 4 FEB 2013 | DOI: 10.1002/jrs.4251

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      We present for the first time a hyper-Raman scattering study of paratellurite. We have also revisited the Raman spectra of paratellurite. Anomalous polarization-selection-rules violations previously observed in Raman and due to optical activity are possible to avoid when light propagates at 45° of the Ox and Oy optical axes. From this single crystal study, all expected optical phonon modes frequencies and symmetries are given, except one E (LO) mode that could not be observed. We have evidenced a strong harmonic light scattering signal in the ZYY′ spectrum that we tentatively assigned to hyper-Raleigh optical activity that comes from a mixed dipolar electric–magnetic effect.

    15. High-resolution Raman spectroscopy of ν2 and associated hot bands of 13CH12CH: global analysis of the anharmonic resonances (pages 746–751)

      Raúl Z. Martínez, Dionisio Bermejo, Gianfranco Di Lonardo and Luciano Fusina

      Version of Record online: 3 FEB 2013 | DOI: 10.1002/jrs.4247

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      The Raman spectrum of the 13CH12CH molecule in the region of its ν2 vibrational band has been recorded at high resolution, and five vibrational bands have been observed. A joint analysis of these bands and several previously observed infrared ones has been carried out, rendering a set of deperturbed molecular parameters. The ro-vibrational pattern of the stretching and stretching-bending combination states and an accurate description of the anharmonic resonances in this molecule have been obtained.

    16. One-phonon resonant electron Raman scattering in a cylindrical GaAs/AlAs quantum dot (pages 752–757)

      Qing-Hu Zhong, Rui-Qiang Wang, Liang-Bin Hu, Yu-Zhen Yan, Shou-Liang Bu and Xue-Hua Yi

      Version of Record online: 7 JAN 2013 | DOI: 10.1002/jrs.4242

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      When increasing the radius of the quantum dot (QD), the picks for SIO1 have a blue shift and for SIO2 a red shift (shown by arrows). This shift can be explained by the effect of QD-size-selective Raman scattering, which tells us by varying the size of the QDs, it is possible to control the frequency shift in the Raman spectrum.

    17. 3D Raman mapping of uniaxially loaded 6H-SiC crystals (pages 758–762)

      E. del Corro, J. G. Izquierdo, J. González, M. Taravillo and V. G. Baonza

      Version of Record online: 4 FEB 2013 | DOI: 10.1002/jrs.4252

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      The in-depth and in-plane stress distributions along silicon carbide (SiC) crystals are obtained from Raman spectroscopy using a nondestructive standard opposed anvil configuration that can be extended to analyze the three-dimensional stress behavior of a large range of materials.

    18. Structural transformations in a single-crystal Rb2NaYF6: Raman scattering study (pages 763–769)

      A. S. Krylov, A. N. Vtyurin, A. S. Oreshonkov, V. N. Voronov and S. N. Krylova

      Version of Record online: 2 MAR 2013 | DOI: 10.1002/jrs.4263

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      This paper reports Raman spectroscopy investigation of phase transitions in Rb2NaYF6 crystal. Raman spectra were obtained in temperature range from 8 to 300 K. The Raman spectra showed anomalous temperature-dependent behavior at 154 and 122 K. Detailed analysis temperature dependencies of the line positions and widths have been performed. For this crystal, soft mode restoration has been found, which allows us to attribute the transition at 154 K to displacive type. Raman spectra of Rb2NaYF6 crystal have been obtained and analyzed under hydrostatic pressure till up to 4.33 GPa (at T = 295 K). The experiment up to 4.33 GPa did not disclose any effects associated with phase transitions. The lattice vibration spectra under pressure were calculated. The calculation has been demonstrated that the Rb2NaYF6 does not undergo phase transition up to 10 GPa.

    19. Micro-Raman investigations of early stage silver corrosion products occurring in sulfur containing atmospheres (pages 770–775)

      I. Martina, R. Wiesinger and M. Schreiner

      Version of Record online: 18 MAR 2013 | DOI: 10.1002/jrs.4276

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      Silver substrates are weathered for 24 h in sulfur containing and humidified atmospheres. Micro-Raman analysis is carried out on the substrates to identify the chemical species and outline the corrosion mechanisms.

    20. Real-time Raman spectroscopy measurements to study the uniaxial tension of isotactic polypropylene: a global overview of microstructural deformation mechanisms (pages 776–784)

      J. Martin, M. Ponçot, J.M. Hiver, P. Bourson and A. Dahoun

      Version of Record online: 29 JAN 2013 | DOI: 10.1002/jrs.4244

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      Raman spectroscopy is combined to a video-controlled tensile test machine using the VideoTractionTM system in order to enable the investigation of the micromechanisms of deformation of semi-crystalline polymers. This apparatus is applied to analyze the microstructural changes occurring in an isotactic polypropylene in real time during a uniaxial stretching test. Results are in good agreement with previous descriptive models encountered in the literature in case of stretched semi-crystalline polymer which described in details the evolution of the microstructure of such kind of materials.

    21. Hydrogen bonds and polymerization in acrylamide under pressure (pages 785–790)

      Bharat Bhooshan Sharma, Chitra Murli and Surinder M. Sharma

      Version of Record online: 2 MAR 2013 | DOI: 10.1002/jrs.4264

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      We report here the in-situ high pressure Raman investigations of acrylamide up to ~17 GPa. Structural transition is observed in the pressure range 1.4–2.6 GPa facilitated by the reconstruction of N-H---O hydrogen bonds and conformational changes. Emergence of several new spectral features at higher pressures indicates onset of polymerization. The characteristic CH2 polymer band is discernible at ~17 GPa, and increase in its relative intensity on release to ambient conditions indicates that higher fraction of polymer is obtained on decompression.

  3. Short communication

    1. Top of page
    2. Rapid communication
    3. Research articles
    4. Short communication
    1. Morphology of InN nanorods using spectroscopic Raman imaging (pages 791–794)

      Kishore K. Madapu, N. R. Ku, S. Dhara, C. P. Liu and A. K. Tyagi

      Version of Record online: 16 FEB 2013 | DOI: 10.1002/jrs.4267

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      Spectroscopic Raman imaging of vertical and oblique InN NRs are carried out using E1(LO) and SO phonon mode intensities using micro-Raman spectrometer. Combination of imaging with SO(E1) mode arising from surface roughness and E1(LO) phonon mode from the bulk of NRs is used to identify the morphology.