Journal of Raman Spectroscopy

Cover image for Vol. 45 Issue 2

February 2014

Volume 45, Issue 2

Pages 149–210

  1. Research articles

    1. Top of page
    2. Research articles
    3. Short communication
    1. A process analytical approach for quality control of dapivirine in HIV preventive vaginal rings by Raman spectroscopy (pages 149–156)

      Lotte Bøge Lyndgaard, Rolf Spångberg, Christopher Gilmour, Christian Bøge Lyndgaard and Frans van den Berg

      Version of Record online: 20 JAN 2014 | DOI: 10.1002/jrs.4433

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      Dapivirine concentrations in HIV preventive vaginal rings can successfully be quantified using a novel Raman sampling system and PLS regression, thereby providing a fast and non-destructive alternative to the current standard method HPLC. Dapivirine distribution on the entire ring circumference can be determined for quality assessment.

    2. In situ Raman imaging of osteoblastic mineralization (pages 157–161)

      Aya Hashimoto, Liang-da Chiu, Keigo Sawada, Tomohiko Ikeuchi, Katsumasa Fujita, Masahide Takedachi, Yoshinori Yamaguchi, Satoshi Kawata, Shinya Murakami and Eiichi Tamiya

      Version of Record online: 16 JAN 2014 | DOI: 10.1002/jrs.4438

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      The distribution of hydroxyapatite (HA) in cultured osteoblasts was visualized by Raman imaging. The increase in intensity of the 958 cm−1 HA band was observed at the mineralized spots after the second day of osteogenic differentiation induction. Raman imaging serves as a powerful tool to identify the mineralized spots in an in vitro culture of osteogenic lineage cells.

    3. Rapid and simple detection of sodium thiocyanate in milk using surface-enhanced Raman spectroscopy based on silver aggregates (pages 162–167)

      Xiang Lin, Wu-Li-Ji Hasi, Xiu-Tao Lou, Shuang Lin, Fang Yang, Bao-Shen Jia, Yu Cui, De-Xin Ba, Dian-Yang Lin and Zhi-Wei Lu

      Version of Record online: 8 JAN 2014 | DOI: 10.1002/jrs.4436

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      A rapid and simple SERS method to detect sodium thiocyanate in milk using silver aggregates was developed. Using TDA as protein precipitator, silver colloid would aggregate spontaneously when mixing with sample during SERS measurement. The detection limits of sodium thiocyanate were 10−2 µg ml−1 for standard samples and 0.1 µg ml−1 in real sample making the proposed method much practical for in situ detection of sodium thiocyanate in milk.

    4. In-situ Raman spectroscopy of current-carrying graphene microbridge (pages 168–172)

      Minkyung Choi, Jangyup Son, Heechae Choi, Hyun-Joon Shin, Sangho Lee, Sanghoon Kim, Soogil Lee, Seungchul Kim, Kwang-Ryeol Lee, Sang Jin Kim, Byung Hee Hong, Jongill Hong and In-Sang Yang

      Version of Record online: 20 JAN 2014 | DOI: 10.1002/jrs.4442

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      Fig. G and G' peak shifts at various current densities on (on) and right after off (off). We investigated the effects of electrical current on the graphene device under ambient condition by in-situ Raman spectroscopy. The up-shifts of G and G' peaks of the Raman spectra after the electrical current is switched off indicate the p-doping of graphene. X-ray photoemission microscopy supports that the p-doping is due to the adsorption of oxygen.

    5. Nondestructive analysis of jade artifacts from the Cemetery of the Ying State in Henan Province, China using confocal Raman microspectroscopy and portable X-ray fluorescence spectroscopy (pages 173–178)

      H. X. Zhao, Q. H. Li, S. Liu, Y. Q. Hu and F. X. Gan

      Version of Record online: 8 JAN 2014 | DOI: 10.1002/jrs.4435

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      Confocal Raman microspectroscopy and portable X-ray fluorescence analyses were conducted to identify nondestructively 18 jade artifacts from the Cemetery of the Ying State in Henan Province. The artifacts were made of nephrite, malachite, muscovite, and crystal. The characteristic OH stretching modes were used to discriminate between 13 tremolite and two actinolite jade artifacts. Most of them were of the D-type, but one was of the S-type. The chemical compositions were used to briefly assess the possible provenances of these artifacts.

    6. Outdoor use of mobile Raman spectrometers to study the solutions and ices of amino acids (pages 179–187)

      Adam Culka, Jan Jehlička and Tomáš Čapoun

      Version of Record online: 8 JAN 2014 | DOI: 10.1002/jrs.4432

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      Amino acids glycine, alanine, and threonine were analysed in the form of water solutions, and mixtures of solutions of these amino acids as well as respective ices using two hand-held Raman instruments (532 and 785 nm excitation) under outdoor and winter mountain conditions.

    7. You have full text access to this OnlineOpen article
      Decomposition of in vivo spatially offset Raman spectroscopy data using multivariate analysis techniques (pages 188–192)

      Kevin Buckley, Jemma G. Kerns, Anthony W. Parker, Allen E. Goodship and Pavel Matousek

      Version of Record online: 20 JAN 2014 | DOI: 10.1002/jrs.4434

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      Spatially offset Raman spectroscopy data from a spectrally challenging plastic model system and from the transcutaneous measurement of bone in vivo are processed using three different multivariate techniques (band-target entropy minimization, multivariate curve resolution and parallel factor analysis) and the performance of each technique is compared.

    8. Raman scattering in the magnetically frustrated double perovskite Sr2YRuO6 (pages 193–196)

      A. F. García-Flores, H. Terashita, E. M. Bittar, R. F. Jardim and E. Granado

      Version of Record online: 18 DEC 2013 | DOI: 10.1002/jrs.4431

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      Raman scattering study of the double perovskite Sr2YRuO6 was performed. Anomalous softening of a breathing mode of the oxygen octahedra is observed below ~200 K, much above the long-range antiferromagnetic ordering temperature, TN1 = 32 K, due to a spin-phonon coupling mechanism in the presence of magnetic correlations. A diffusive Raman signal of the low-wavenumber scattering at low temperatures is also observed, possibly associated with spin excitations within magnetically correlated regions.

    9. A non-destructive approach for doping profiles characterization by micro-Raman spectroscopy: the case of B-implanted Ge (pages 197–201)

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

      Version of Record online: 16 JAN 2014 | DOI: 10.1002/jrs.4440

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      A non-destructive approach, based on micro-Raman spectroscopy under different excitation wavelengths, is presented to estimate the carrier concentration profiles from the spectral features of the Ge–Ge Raman peak.

    10. Prediction of superconductivity of Ta2AlC: in situ Raman spectrometry and density functional investigations (pages 202–207)

      Huimin Xiang, Jiemin Wang, Yue Chen, Jingyang Wang and Yanchun Zhou

      Version of Record online: 20 JAN 2014 | DOI: 10.1002/jrs.4441

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      The electron–phonon coupling strength of Ta2AlC is obtained both from Raman experiment and density functional calculation. Ta2AlC is predicted to be a new superconductive MAX phase.

  2. Short communication

    1. Top of page
    2. Research articles
    3. Short communication
    1. Vertical flow apparatus for enhancement and efficient collection of Raman signal (pages 208–210)

      Hirotsugu Hiramatsu and Takahiro Saito

      Version of Record online: 8 JAN 2014 | DOI: 10.1002/jrs.4437

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      We developed a vertical flow apparatus that constitutes a laminar flow sample column. The laminar flow column confines both excitation beam and scattered light owing to the total reflection; thereby allowing the enhancement and efficient collection of the signal. A 4.1-fold enhancement is obtained in the non-resonant Raman spectrum of H2O.

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