Just Published: Vibrational Spectroscopy

A new issue of this journal has just been published. To see abstracts of the papers it contains (with links through to the full papers) click here:

Vibrational Spectroscopy

http://rss.sciencedirect.com/publication/science/5293

Selected papers from the latest issue:

2.

A joint application of ATR-FTIR and SEM imaging with high spatial resolution: Identification and distribution of painting materials and their degradation products in paint cross sections   Original Research Article Pages 1-11 Zofia Kaszowska, Kamilla Malek, Magdalena Pańczyk, Anna Mikołajska

3.

Carbamazepine polymorphs: Theoretical and experimental vibrational spectroscopy studies   Original Research Article Pages 12-23 Wojciech Czernicki, Malgorzata Baranska

4.

A Raman study on the coordination sites and stability of the [Al(formamide)5]Cl3 complex   Original Research Article Pages 24-27 Thiago B.C. Campos, Elaine F. da Silva, Wagner A. Alves

5.

Pressure-induced variation of cellulose tablet studied by two-dimensional (2D) near-infrared (NIR) correlation spectroscopy in conjunction with projection pretreatment   Original Research Article Pages 28-35 Hideyuki Shinzawa, Kimie Awa, Isao Noda, Yukihiro Ozaki

6.

A multivariate statistical analysis approach to highlight molecular processes in plant cell walls through ATR FT-IR microspectroscopy: The role of the α-expansin PhEXPA1 in Petunia hybrida   Original Research Article Pages 36-43 F. Monti, R. Dell’Anna, A. Sanson, M. Fasoli, M. Pezzotti, S. Zenoni

7.

Structural studies of copper-containing multicomponent glasses from the SiO2–P2O5–K2O–CaO–MgO system   Original Research Article Pages 44-49 Justyna Sułowska, Irena Wacławska, Zbigniew Olejniczak

8.

Investigation of medium range order in silicate glasses by infrared spectroscopy   Original Research Article Pages 50-57 Domingos De Sousa Meneses, Myriam Eckes, Leire del Campo, Cristiane N. Santos, Yann Vaills, Patrick Echegut

9.

Temperature-dependent Raman spectroscopy studies of phase transformations in the K2WO4 and the MgMoO4 crystals   Original Research Article Pages 58-65 C. Luz-Lima, J.C. Batista, P.T.C. Freire, G.P. de Sousa, F.E.P. dos Santos, J. Mendes Filho, B.C. Viana, G.D. Saraiva

10.

Liquid phase dynamics of molten M2S2O7 (M = K, Cs): A temperature dependent Raman spectroscopic study   Original Research Article Pages 66-73 A.G. Kalampounias, G. Tsilomelekis, S. Boghosian

11.

A study of competitive molecular interaction effects on imprinting of molecularly imprinted polymers   Original Research Article Pages 74-83 M.C. Cela-Pérez, A. Lasagabáster-Latorre, M.J. Abad-López, J.M. López-Vilariño, M.V. Gónzalez-Rodríguez Highlights ► A study of inter- and intra-molecular interactions in pre- and post-polymerization complex was carried out by FTIR. ► A MIP was developed for a previously nonimprinted target, Atmer 129. ► Atmer 129 is able to form intra- and self-intermolecular H-bonding interactions. ► Atmer 129 started to crystallize out during the polymerization reaction. ► Selectivity results suggested that imprinting could be ascribed to shape recognition.

12.

Density functional theory studies on covalent functionalization of single-walled carbon nanotubes with benzenesulfonic acid   Original Research Article Pages 84-93 Metin Aydin

13.

Scanning angle Raman spectroscopy measurements of thin polymer films for thickness and composition analyses   Original Research Article Pages 94-100 Matthew W. Meyer, Vy H.T. Nguyen, Emily A. Smith

14.

An investigation of the effect of microwave treatment on the structure and unfolding pathways of β-lactoglobulin using FTIR spectroscopy with the application of two-dimensional correlation spectroscopy (2D-COS)   Original Research Article Pages 101-109 A.I. Gomaa, J. Sedman, A.A. Ismail Highlights ► FTIR spectra of microwave treated and conventionally heated β-lactoglobulin were compared. ► Microwave treatment at sub-ambient temperature did not alter the protein's conformation. ► Disruption of tertiary structure at 40–60°C was enhanced by microwave treatment. ► Protein aggregation was more extensive during microwave treatment than during conventional heating. ► Unfolding pathways, as determined by 2D COS analysis, were similar during microwave treatment and conventional heating.

15.

In situ FT-IR and TPD-MS study of carbon monoxide oxidation over a CeO2/Co3O4 catalyst   Original Research Article Pages 110-115 Chih-Wei Tang, Li-Chia Hsu, Shen-Wei Yu, Chen-Bin Wang, Shu-Hua Chien

16.

Effect of methylation on wavenumber shift of ring breathing mode of pyrimidine in the solution of H2O and D2O by employing Raman difference spectroscopic technique and DFT approach   Original Research Article Pages 116-123 Shivangi Mishra, Debraj Gangopadhyay, Anurag Singh, J. Popp, Ranjan K. Singh

17.

Trimethylsilyl trichloroacetate vibrational, structural and electronic properties and their comparison with related acetates   Original Research Article Pages 124-131 M.E. Defonsi Lestard, R.A. Cobos Picot, M.E. Tuttolomondo, A. Ben Altabef Highlights ► Theoretical data indicate that there is only one conformer withCssymmetry. ► Trimethylsilyl trichloroacetate is a convenient reagent for the silylation of phenols. ► The spectral features were subsequently assigned to the different normal modes of vibration. ► The lone pairs of Cl and F atoms and their interaction on theσ* CC andσ* CO. ► The rotation barrier, COCC dihedral angle is the same for the CX3C(O)OSi(CH3)3(X=CL, F).

CHN Determination of Highly Fluorinated Organic Compounds

To accurately determine the percentage Carbon (C), Hydrogen (H) and Nitrogen (N) in highly fluorinated organic compounds**, Exeter Analytical Inc. has developed a reliable analytical method using their Model 440 Elemental Analyzer.

Generally compounds containing fluorine can be successfully analysed for percentage CHN content on most elemental microanalysis systems under standard operating conditions. The magnesium oxide in the combustion tube reagent packing absorbs fluorine as HF, and releases the hydrogen. However - highly fluorinated compounds, which are often difficult to combust, can give incorrect carbon and high nitrogen data. This is believed to be due to the strength of the C-F bond. If not fully oxidized, CF2 passes through the combustion tube packing and is detected as nitrogen, resulting in both low carbon and high nitrogen data.

For these highly fluorinated compounds, Exeter Analytical have developed a new reliable analytical method based upon their Model 440 Elemental Analyzer that is described in Application Note 217.

Just Published: Talanta

A new issue of this journal has just been published. To see abstracts of the papers it contains (with links through to the full papers) click here:

Talanta

http://rss.sciencedirect.com/publication/science/5288

Selected papers from the latest issue:

1.

Label-free detection of glycoproteins by the lectin biosensor down to attomolar level using gold nanoparticles   Original Research Article Available online 1 March 2013 Tomas Bertok, Alena Sediva, Jaroslav Katrlik, Pavol Gemeiner, Milan Mikula, Martin Nosko, Jan Tkac Highlights ► Lectin biosensor based on gold nanoparticles detects glycoproteins down to attomolar (aM) concentration level. ► A 2-D array of gold nanoparticles were characterised by AFM, SEM and SPR. ► The biosensor performance was validated by fluorescent lectin microarray. ► The device was able to quantify glycan amount on a glycoprotein in a quantitative way. ► The biosensor has a great potential to be employed in an early biomedical diagnosis of various diseases including cancer.

2.

Optimisation and application of accelerated solvent extraction and flash chromatography for quantification of PCBs in tree barks and XAD-2 passive samplers using GC-ECD with dual columns   Original Research Article Available online 1 March 2013 Florence Guéguen, Peter Stille, Maurice Millet Highlights ► Extraction of XAD-2 passive samplers and tree barks by Accelerated solvent Extraction. ► Field calibration of XAD-2 passive samplers. ► Analysis by GC-ECD with dual columns. ► Application of the method for quantifying PCBs in tree barks with accuracy.

3.

Development of a new chromium reducing antioxidant capacity (CHROMAC) assay for plants and fruits   Original Research Article Available online 1 March 2013 Esra Işik, Saliha Şahin, Cevdet Demir Highlights ► CHROMAC assay was proposed for determination of total antioxidant capacity. ► The method is based on the spectrophotometric measurement of a colored complex. ► The method could be applied to hydrophilic antioxidants. ► Comperable results were obtained with well known antioxidant capacity assays.

4.

Simultaneous separation, identification and activity evaluation of three butyrylcholinesterase inhibitors from Plumula nelumbinis using On-line HPLC-UV coupled with ESI-IT-TOF-MS and BChE biochemical detection   Original Research Article Available online 28 February 2013 Zongtao Lin, Hong Wang, Qingrong Fu, Haijuan An, Yi Liang, Baobao Zhang, Yuki Hashi, Shizhong Chen Graphical abstract Highlights ► On-line HPLC-ESI-MS-BChEBCD method was firstly established. ► Enable simultaneously separating, identifying, evaluating activity of BChE inhibitor. ► Liensinine, isoliensinine, and neferine are new-found BChE inhibitors. ► BChE activity of 1gPlumula nelumbinisis equal to that of 127.88μmol tacrine. ► Norisoliensinine and 6-hydroxynorisoliensinine were proposed as two new compounds.

5.

Quantification of uncertainty in mercury wastewater analysis at different concentration levels and using information from proficiency test with a limited number of participants   Original Research Article Available online 28 February 2013 Marcelo T. Pereyra, Adriana G. Lista, Beatriz S. Fernández Band Highlights ► A PT scheme for limited number of analytical laboratories was developed, conducted and assessed in a restrictive scenario. ► Measurement uncertainty was calculated for a non simple method in complex matrix samples without highest references of traceability. ► The worst case-scenario (with two different levels of analyte concentration) presented in this paper is not included in international guidelines for the assessment of measurement uncertainty. ► The procedure designed could be applied to many other common and similar scenarios. ► The study provided useful information for analytical quality assessments, official controls and environmental managements.

6.

Speciation analysis of selenium in plankton, Brazil nut and human urine samples by HPLC-ICP-MS   Original Research Article Available online 28 February 2013 Elidiane Gomes da Silva, Lidiane Raquel Verola Mataveli, Marco Aurélio Zezzi Arruda Graphical abstract Highlights ► A method for selenium speciation in biological materials was described ► The coupling LC-ICP-MS was used for this purpose. ► Recoveries of ca. 90% were attained. ► Extraction of Se species was carried out using water. ► Selenomethionine and selenocystine were the species found in Brazil nuts. ► selenocystine was found in urine samples. ► Significant differences of organic Se species were observed from men and women urine samples after Brazil nuts consumption.

7.

Selection and identification of streptomycin-specific single-stranded DNA aptamers and the application in the detection of streptomycin in honey   Original Research Article Available online 28 February 2013 Nandi Zhou, Jingyuan Wang, Juan Zhang, Can Li, Yaping Tian, Joseph Wang Highlights ► Sixteen ssDNA aptamers specific to streptomycin were screened and identified. ► The structures and the dissociation constants of the aptamers were characterized. ► STR1 was used in the detection of streptomycin in both solution and honey samples. ► The sensitivity, specificity and repeatability of the assay were studied.

8.

A highly selective sandwich-type FRET assay for ATP detection based on silica coated photon upconverting nanoparticles and split aptamer   Original Research Article Available online 27 February 2013 Xiaoxiao He, Zhangxiu Li, Xuekun Jia, Kemin Wang, Jinjin Yin Highlights ► A sandwich-type FRET assay for ATP detection has been developed. ► This assay was based on Si@UCNPs and ATP-induced recombination of split aptamer. ► The proposed strategy has high selectivity to ATP. ► This assay provided a detection limit of 1.70μM for ATP.

9.

Development and validation of an environmentally friendly attenuated total reflectance in the mid-infrared region method for the determination of ethanol content in used engine lubrication oil   Original Research Article Available online 27 February 2013 Rafael Rodrigues Hatanaka, Rodrigo Sequinel, Carlos Eduardo Gualtieri, Antônio Carlos Bergamaschi Tercini, Danilo Luiz Flumignan, José Eduardo de Oliveira Graphical abstract Highlights ► A method to quantify ethanol content in used lubrication oil is proposed. ► The samples are pretreated in a miniaturized system of extraction. ► NaCl aqueous solution is used as extractant (environmentally friendly). ► The method was validated and considered linear, precise, accurate and sensitive. ► The method can be implemented in routines for quality control of lubricant oils.

10.

Towardscombinatorial spectroscopy: the case of minor milk fatty acids determination   Original Research Article Available online 27 February 2013 I. Stefanov, V. Baeten, B. De Baets, V. Fievez Highlights ► The concept of ‘Combinatorial Spectroscopy’ is introduced. ► New robust, simple and improved FA PLS prediction models are constructed. ► New covariance between different vibrational signals is evident. ► The importance of variable selection algorithms is emphasized.

Safe Evaporation of Acids and Organic Solvents

Genevac evaporators are robust systems designed to be resistant to the most common solvents and acids used within the chemistry laboratory, including Trifluoroacetic Acid (TFA), Dichloromethane (DCM), and Dimethyl Sulphoxide (DMSO).

However a wide range of applications in the Pharmaceutical, Speciality / Fine Chemical, Petrochemical, Cosmetic, Electronic and Nuclear industries use acid chlorides and stronger mineral acids for routine synthesis and experimentation.

For laboratories that wish to use stronger mineral acids and acid chlorides, special models of Genevac systems exist which are specifically designed to be resistant to these highly corrosive acids including acid resistant versions of Genevac's HT-4X, HT-12 and EZ-2 evaporators.

The most recent addition to this range is the third generation, Acid-Resistant EZ-2 Plus Evaporator which uses inert and corrosion proof materials to enable it to withstand up to 6N Hydrochloric acid, 70% Nitric acid and most acid chlorides including thionyl chloride.  These strongly acidic materials can be routinely removed from samples without any loss of performance or long-term deterioration in the system.   Acid resistant components in the Acid-Resistant EZ-2 Plus include a PTFE coated evaporation chamber, a glass condenser and all metallic parts coming into contact with removed solvent are manufactured from acid resistant Hasteloy® C steel*.

The innovative design of the Acid-Resistant EZ-2 Plus presents real advantages for all scientists and engineers tasked with removing both regular solvents and strongly acidic chemicals. Intuitive controls and large LCD display provide ease of use comparable to a typical rotary evaporator yet the Acid-Resistant EZ-2 Plus can process many more samples per unit time. Smart evaporator software provides true walk-away automation so simple and sample safe that anyone can use it with confidence. The proprietary pump technology combined with a visible glass condenser trap and easy access solvent drain valve make the Acid-Resistant EZ-2 Plus the most compact and reliable acid resistant sample evaporator available.

Just Published: Chemometrics and Intelligent Laboratory Systems

A new issue of this journal has just been published. To see abstracts of the papers it contains (with links through to the full papers) click here:

Chemometrics and Intelligent Laboratory Systems
http://rss.sciencedirect.com/publication/science/5232

Selected papers from the latest issue:

1.

Scatter-based quantitative spectroscopic analysis of milk fat and total protein in the region 400-1100 nm in the presence of fat globule size variability   Original Research Article Available online 27 February 2013 A. Bogomolov, A. Melenteva Highlights ► Fat and total protein in raw milk are accurately determined from Vis/SW-NIR spectra. ► The method is resistant against large variability of fat globule sizes. ► PLS calibration is based on light multiple scatter by fat and protein particles. ► Experimental design for milk component calibration based on mixing standard samples.

2.

Enhanced batch process monitoring using just-in-time-learning based kernel partial least squares   Original Research Article Available online 26 February 2013 Yi Hu, Hehe Ma, Hongbo Shi Highlights ► An enhanced process monitoring framework for batch processes is proposed ► The new local method is better than conventional multiway and hierarchical methods ► The proposed method can handle the problem of uneven-length phases ► We use a moving window strategy in order to satisfy the real-time requirement ► Estimation of future values of the process variables is avoided

3.

On the selection of the weighting parameter value in Principal Covariates Regression   Original Research Article Available online 24 February 2013 Marlies Vervloet, Katrijn Van Deun, Wim Van den Noortgate, Eva Ceulemans Highlights ► PCovR is an interesting method to deal with multicollinearity problems ► We integrated simulation results from different domains on weighting in PCovR ► The derived hypotheses on the importance of weighting are tested in simulations ► The optimal weighting value depends on the number of predictors and amount of error ► Weighting is only important when components differ in strength and relevance

Improving Reproducibility in Real-Time PCR

INTEGRA has reported how a leading US clinical diagnostic laboratory has, using a VIAFLO 96 handheld electronic pipette, significantly improved the reproducibility and productivity with which it carries out Real-time PCR assays.

An important source of income for the clinical diagnostic lab is the screening of patient samples for the presence of disease markers by gene expression analysis. This analysis involved transferring pre-treated patient samples from a 96-well plate source to a target PCR plate, adding the PCR master mix and then subsequently analysing the plate by real-time PCR. The lab traditionally processed around 100 plates per day and the work was all done using 12-channel pipettes. Manually filling a 96-well plate, including changing of pipette tips after every sample transfer, was acknowledged to be a time consuming task and transferring the samples often proved to be prone to error.

Looking to improve this process the lab invested in an INTEGRA VIAFLO 96 handheld electronic pipette to both load the patient samples into the plates and then to transfer the PCR master mix to the reaction plate. As a result - the work is now done in half the time. More important to the clinical diagnostic lab are two additional improvements. Transfer mistakes from plate to plate have been eliminated and now the light-sensitive PCR master mix is only exposed to daylight for a few seconds prior to the reaction, as all plate wells can be processed at the same time. According to the lab manager, the VIAFLO 96 has increased accuracy, robustness and precision of the assay in comparison to their previous use of manual 12 channel pipettes.

The INTEGRA VIAFLO 96 is a handheld 96-channel electronic pipette that enables fast, precise and easy simultaneous transfer of 96 samples. Customers will immediately benefit from the increased productivity delivered by their VIAFLO 96. Fast replication or reformatting of 96 and 384 well plates and high precision transferring of reagents, compounds and solutions to or from microplates is now as easy as pipetting with a standard electronic pipette into a single tube. Four pipetting heads with pipetting volumes up to 12.5 µl, 125 µl, 300 µl or 1250 µl are available for the VIAFLO 96. These pipetting heads are interchangeable within seconds enabling optimal matching of the available volume range to the application performed.

Just Published: Sensors & Actuators B: Chemical

A new issue of this journal has just been published. To see abstracts of the papers it contains (with links through to the full papers) click here:

Sensors & Actuators B: Chemical
http://rss.sciencedirect.com/publication/science/5283

Selected papers from the latest issue:

1.

Sensing behavior of Al and Si doped BC3 graphenes to formaldehyde   Original Research Article Available online 1 March 2013 Javad Beheshtian, Ali Ahmadi Peyghan, M. Noei

2.

Enhanced Acetone Gas-sensing Performance of La2O3-doped Flowerlike ZnO Structure Composed of Nanorods   Original Research Article Available online 1 March 2013 Jian-Qun He, Jing Yin, Dong Liu, Le-Xi Zhang, Feng-Shi Cai, Li-Jian Bie

3.

Resolution of amino acid mixtures by an array of potentiometric sensors based on boronic acid derivative in a SIA flow system   Original Research Article Available online 1 March 2013 M. Jańczyk, A. Kutyła-Olesiuk, X. Cetó, M. del Valle, P. Ciosek, W. Wróblewski Highlights ► Quantitative analysis of amino acids mixtures by a flow-through electronic tongue. ► Flow-through sensor array coupled with Sequential Injection Analysis system. ► Miniaturized ion-selective electrodes based on phenylboronic acid and ion exchanger. ► Data processing involving the extraction of dynamic components of transient response. ► Simultaneous determination of phenylalanine, tyrosine, ornithine and glutamic acid.

4.

Diazonium modified gold microelectrodes onto polyimide substrates for impedimetric cytokine detection with an integrated Ag/AgCl reference electrode   Original Research Article Available online 1 March 2013 Abdoullatif Baraket, Michael Lee, Nadia Zine, Monique Sigaud, Nourdin Yaakoubi, Maria. Giovanna Trivella, Miguel Zabala, Joan Bausells, Nicole Jaffrezic- Renault, Abdelhamid Errachid

5.

Electrochemical DNA-biosensors: two-electrode setup well adapted for miniaturized devices    Available online 1 March 2013 M. Lazerges, V.T. Tal, P. Bigey, D. Scherman, F. Bedioui

6.

An LTCC-based microfluidic system for label-free, electrochemical detection of cortisol   Original Research Article Available online 1 March 2013 Abhay Vasudev, Ajeet Kaushik, Yuichi Tomizawa, Nicolas Norena, Shekhar Bhansali

7.

Effect of edge plane sites, oxygenated species and metallic impurities upon the electroactivity of carbon nanotube-modified electrodes towards hydrazine   Original Research Article Available online 1 March 2013 Alberto Sánchez Arribas, Mónica Moreno, Marta Martínez-Fernández, Esperanza Bermejo, Antonio Zapardiel, Manuel Chicharro Highlights ► Electroactivity of carbon nanotubes towards hydrazine is revised ► Edge plane sites and oxygenated species greatly influence the electrochemical response ► Metal oxide impurities have a relevant contribution when found in quite amount ► The activity of iron oxides can be removed by a simple voltammetric pretreatment.

8.

Curling-like Bi2WO6 microdiscs with lamellar structure for enhanced gas-sensing properties   Original Research Article Available online 1 March 2013 Zheng Lou, Jianan Deng, Lili Wang, Lijie Wang, Tong Zhang

9.

Highly-sensitive and selective colorimetric sensor for amino acids chiral recognition based on molecularly imprinted photonic polymers   Original Research Article Available online 1 March 2013 Yin-Xia Zhang, Pin-Yi Zhao, Li-Ping Yu

10.

Controlled Particle Positioning Using Liquid Film Squeeze Flow   Original Research Article Available online 28 February 2013 Matthew Pomaroff, Adrian Neild

11.

Paper ID: 2003 Evaporation rate of drop arrays within a digital microfluidic system   Original Research Article Available online 28 February 2013 Laurent Davoust, Johannes Theisen

12.

Highly sensitive formaldehyde sensors based on catalyst added porous films fabricated by plasma spray physical vapor deposition   Original Research Article Available online 28 February 2013 Kazuyuki Iizuka, Makoto Kambara, Toyonobu Yoshida

13.

Hydrogen Peroxide Detection under Physiological Conditions by Prussian Blue Stabilized using a Polyelectrolyte-Surfactant Complex Matrix   Original Research Article Available online 28 February 2013 Carina Gaviglio, Fernando Battaglini

14.

Patterning and electrical interfacing of individually controllable conducting polymer microactuators   Original Research Article Available online 28 February 2013 Edwin W.H. Jager, Nirul Masurkar, Nnamdi Felix Nworah, Babita Gaihre, Gursel Alici, Geoffrey M. Spinks

15.

Preparation of copper oxide nanowire-based conductometric chemical sensors   Original Research Article Available online 28 February 2013 D. Zappa, E. Comini, R. Zamani, J. Arbiol, J.R. Morante, G. Sberveglieri

16.

Non-aggregation colorimetric sensor for detecting vitamin C based on surface plasmon resonance of gold nanorods   Original Research Article Available online 28 February 2013 Xin-Xing Wang, Shu-Lian Jiang, Li Jiao, Li-Ping Lin, Ma-lin Cui, Xiao-Yang Zhang, Jia-Ming Liu, Li-Hong Zhang, Zhi-Yong Zheng

17.

Highly sensitive humidity sensor based on a high surface area mesoporous LaFeO3 prepared by a nanocasting route   Original Research Article Available online 28 February 2013 Jing Zhao, Yinping Liu, Xiaowei Li, Geyu Lu, Lu You, Xishuang Liang, Fengmin Liu, Tong Zhang, Yu Du

18.

Performance Enhancement Mechanisms of Passivated InN/GaN-Heterostructured Ion-Selective Field-Effect-Transistor pH Sensors   Original Research Article Available online 28 February 2013 Ching-Ting Lee, Ying-Shuo Chiu, Xin-Qiang Wang

19.

Mesoporous Assembled SnO2 Nanospheres: Controlled Synthesis, Structural Analysis and Ethanol Sensing Investigation   Original Research Article Available online 28 February 2013 Yun Kuang, Guobing Chen, Xiaodong Lei, Liang Luo, Xiaoming Sun

20.

High Density CMOS Electrode Array for High-throughput and Automated Cell Counting   Original Research Article Available online 27 February 2013 Tze Sian Pui, Yu Chen, Chee Chung Wong, Revanth Nadipalli, Roshan Weerasekera, Sunil K. Arya, Hao Yu, Abdur R.A. Rahman

21.

Molecularly Imprinted Polymer-based Piezoelectric Sensor for Enantio-selective Analysis of Malic acid Isomers   Original Research Article Available online 27 February 2013 Bhim Bali Prasad, Indu Pandey

22.

An Electrochemical Immunosensor based on gold nanoparticle tags for picomolar detection of c-Myc oncoprotein   Original Research Article Available online 27 February 2013 Jing-Lin He, Yan-Fei Tian, Zhong Cao, Wei Zou, Xin Sun

23.

Morphology-controllable synthesis, characterization and sensing properties of single-crystal molybdenum trioxide   Original Research Article Available online 27 February 2013 Peng Song, Qi Wang, Jia Li, Zhongxi Yang

24.

Growth of graphene-like films for NO2 detection   Original Research Article Available online 27 February 2013 S.V. Samsonau, S.D. Shvarkov, F. Meinerzhagen, A.D. Wieck, A.M. Zaitsev

25.

Two-layer microdevice for parallel flow-through PCRs employing plastic syringes for semi-automated sample injection and a single heater for amplification: toward process simplification and system miniaturization   Original Research Article Available online 27 February 2013 Wenming Wu, Nae Yoon Lee Graphical abstract Gas-permeable nature of the PDMS material combined with its innate low thermal conductivity ensures on-chip parallel flow-through PCRs in a semi-automated manner simply by utilizing disposable plastic syringes and a single commercialized hot plate

26.

A Fully Integrated Wireless CMOS Microcantilever Lab Chip for Detection of DNA from Hepatitis B Virus (HBV)   Original Research Article Available online 27 February 2013 Che-Wei Huang, Hsiao-Ting Hsueh, Yu-Jie Huang, Hsin-Hao Liao, Hann-Huei Tsai, Ying-Zong Juang, Tsung-Hsien Lin, Shey-Shi Lu, Chih-Ting Lin

27.

Ozone gas sensor based on nanocrystalline SrTi1-xFexO3 thin films   Original Research Article Available online 27 February 2013 Valmor R. Mastelaro, Sérgio C. Zílio, Luis F. da Silva, Pedro I. Pelissari, Maria I.B. Bernardi, Jacques Guerin, Khalifa Aguir

28.

Fluorescence ON/OFF Switching Zn2+ Sensor Based on Pyridine–Pyridone Scaffold   Original Research Article Available online 27 February 2013 Masayori Hagimori, Takuhiro Uto, Naoko Mizuyama, Takashi Temma, Yasuchika Yamaguchi, Yoshinori Tominaga, Hideo Saji

29.

Platinum Thin Film Electrodes for High-Temperature Chemical Sensor Applications   Original Research Article Available online 26 February 2013 Engin Çiftyürek, Katarzyna Sabolsky, Edward M. Sabolsky Highlights ► The degradation of Pt films with various adhesion layers was investigated. ► The migration behaviors of the adhesion layers within Pt were determined by XPS. ► The application of an Hf adhesion layer for Pt-IDEs was shown. ► The Hf/L-Zr-Pt multilayer film remained highly conductive up to 1200°C for 48h. ► A lift-off technique was used to produce sensor electrodes with the optimum microstructure.

30.

A rapid bacteria detection technique utilizing impedance measurement combined with positive and negative dielectrophoresis   Original Research Article Available online 26 February 2013 R. Hamada, H. Takayama, Y. Shonishi, L. Mao, M. Nakano, J. Suehiro

31.

Detection of sample conductivity and bacterial presence using inductive microcoils. Effect of device size and geometry   Original Research Article Available online 26 February 2013 Susanna Martínez, Francesc-Xavier Muñoz-Pascual, Eva Baldrich