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2D COS of Temperature-Dependent Raman Spectra of Amorphous, Nonoriented Polyethylene Terephthalate to Separate Molecular Conformational Changes from True CrystallizationBecause of the structural use of polymers, it is important to understand the origin of their strength, elongation to break, elasticity, flexibility, and so on. It is in the very low frequency region (the so called “terahertz” range) where it is believed that the real indicators for crystallinity appear.
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The Carbonyl Group, Part V: Carboxylates—Coming CleanCarboxylates are made by reacting carboxylic acids with strong bases such as inorganic hydroxides. Carboxylates contain two unique carbon–oxygen “bond and half” linkages that coordinate with a metal ion to give two strong infrared peaks, which make them easy to see.
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Surface-Enhanced Raman Spectroscopy: From Concept to Practical ApplicationIn the last decade, numerous SERS substrates have been developed, but it is difficult to compare and validate their plasmonic performance. In this overview, the authors discuss the three physical parameters of any new SERS platform that must be measured-morphological characterization, optical scattering (far-field response), and near-field properties-and future prospects for the development of new SERS platforms.
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Current Trends in Polymer Raman Spectroscopy: Quality, Efficiency, and SafetyRaman-based polymer process monitoring enables rapid optimization of polymerization conditions, improves process efficiency, and ensures optimal final form.
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Towards Safer Cannabis Consumer Products: The Importance of testing for Heavy MetalsIn this podcast we will cover how heavy metal contamination can occur during the entirety of the cannabis life cycle including: • Cultivation and harvesting • Extraction and processing • Testing and measurement • Finished Product We will also explore the impact that this type of contamination can have on consumer safety and how it is regulated.
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Advances in Stress Measurement with Portable X-Ray Diffraction: Uncertainties in Normal and Shear Stress Determination on Mild Steel PipeTo test the accuracy of residual stress measurements made with portable X-ray devices, measured normal and shear stresses were compared with the applied (true) values for accuracy assessment. From those results, practical measurement and analysis protocols for precise and accurate stress measurements are proposed.
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Advances in Stress Measurement with Portable X-Ray Diffraction: Uncertainties in Normal and Shear Stress Determination on Mild Steel PipeTo test the accuracy of residual stress measurements made with portable X-ray devices, measured normal and shear stresses were compared with the applied (true) values for accuracy assessment. From those results, practical measurement and analysis protocols for precise and accurate stress measurements are proposed.
Latest:
Advances in Stress Measurement with Portable X-Ray Diffraction: Uncertainties in Normal and Shear Stress Determination on Mild Steel PipeTo test the accuracy of residual stress measurements made with portable X-ray devices, measured normal and shear stresses were compared with the applied (true) values for accuracy assessment. From those results, practical measurement and analysis protocols for precise and accurate stress measurements are proposed.
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Small-Angle X-ray Scattering from Lamellar StructuresLamellar structures, which are common in many polymeric materials and biological tissues, can diffract X-rays and give rise to reflections at small scattering angles. Analysis of these scattering features can be used investigate the deformation of lamellar structures at the microstructural length.
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The miniDOAS: Low Cost, High Performance Contactless Ammonia MeasurementsKnowledge of atmospheric ammonia concentrations is important, but ammonia is difficult to measure. We report here on the development of a low-cost ammonia measuring differential optical absorption spectroscopy (DOAS) instrument, based on a small sized and low priced spectrograph.
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New Approach for ICP-OES Environmental Analysis - App NoteNew ICP-OES plasma viewing technique doubles the sensitivity in the analysis of environmental samples from water, wastewater, soils, and sludges on the SPECTROGREEN.
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New York–New Jersey Society for Applied Spectroscopy Celebrates Student Award WinnersOn July 13, 2019, from 5 pm to 8 pm, the New York–New Jersey Society for Applied Spectroscopy (SAS) organization celebrated their student award winners at its annual banquet, held at Rutgers State University in the new Chemistry and Chemical Biology building in Piscataway, New Jersey. This year the group celebrated the accomplishments of three winners.
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Combining Spectroscopy with Microscopy for Advancing the Analysis of Forensically Relevant TracesForensic traces are physical remnants of past events that provide critical information for criminal and civil investigations and adjudications. The scientific examination of traces is an incredibly valuable tool for forensic investigations, because the skilled interpretation of traces yields factual answers to a range of pertinent questions.
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The Use of Raman Spectroscopy for the Identification of Forensically Relevant Body Fluid StainsThis study reveals the ability of Raman spectroscopy to identify some forensically relevant body fluids, both
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The Use of Raman Spectroscopy for the Identification of Forensically Relevant Body Fluid StainsThis study reveals the ability of Raman spectroscopy to identify some forensically relevant body fluids, both
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Spectroscopy Labs in Puerto Rico Have Lost All Equipment and Remain Inoperable. We Need to Help.On September 20, 2017, Hurricane Maria devastated Puerto Rico, leaving the inhabitants without clean water, food, utilities and transportation. As you read this, the infrastructure is slowly being restored. The news you hear, however, doesn’t indicate the outsized impact on scientists and their families. The Society for Applied Spectroscopy and Coblentz Society are trying to help.
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Surface Sensitive Photothermal AFM-IR Unlocks New Dimensions in Precision Analysis for Top Layer of Sample (January 2024)Bruker’s Surface Sensitive AFM-IR technology provides high-resolution surface sensitivity, reducing chemical probing depth to under 30 nanometers.
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Rapid Online Reduction and Characterization of Protein Modifications Using Fully Automated Two-Dimensional High Performance Liquid Chromatography–Mass SpectrometryA fully automated process for online peak fractionation and reduction of therapeutic antibodies with subsequent QTOF-MS characterization is presented. The technique is based on state-of-the-art 2D-HPLC technology coupled with additional HPLC modules via a dedicated software macro.
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Rapid Online Reduction and Characterization of Protein Modifications Using Fully Automated Two-Dimensional High Performance Liquid Chromatography–Mass SpectrometryA fully automated process for online peak fractionation and reduction of therapeutic antibodies with subsequent QTOF-MS characterization is presented. The technique is based on state-of-the-art 2D-HPLC technology coupled with additional HPLC modules via a dedicated software macro.
Latest:
Rapid Online Reduction and Characterization of Protein Modifications Using Fully Automated Two-Dimensional High Performance Liquid Chromatography–Mass SpectrometryA fully automated process for online peak fractionation and reduction of therapeutic antibodies with subsequent QTOF-MS characterization is presented. The technique is based on state-of-the-art 2D-HPLC technology coupled with additional HPLC modules via a dedicated software macro.
Latest:
Rapid Online Reduction and Characterization of Protein Modifications Using Fully Automated Two-Dimensional High Performance Liquid Chromatography–Mass SpectrometryA fully automated process for online peak fractionation and reduction of therapeutic antibodies with subsequent QTOF-MS characterization is presented. The technique is based on state-of-the-art 2D-HPLC technology coupled with additional HPLC modules via a dedicated software macro.
Latest:
Rapid Online Reduction and Characterization of Protein Modifications Using Fully Automated Two-Dimensional High Performance Liquid Chromatography–Mass SpectrometryA fully automated process for online peak fractionation and reduction of therapeutic antibodies with subsequent QTOF-MS characterization is presented. The technique is based on state-of-the-art 2D-HPLC technology coupled with additional HPLC modules via a dedicated software macro.
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The 2018 Emerging Leader in Atomic Spectroscopy AwardJohn M. Cottle, the winner of Spectroscopy’s 2018 Emerging Leader in Atomic Spectroscopy Award, is a leader in the development of novel laser-ablation inductively coupled plasma–mass spectrometry measurements and their application to tectonic questions in convergent orogens. His three breakthrough measurement methods using LA-ICP-MS for geochemical data collection are breaking new ground in Earth science.
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Recent Developments in X-ray AnalysisIn our annual presentation of trends in X-ray analysis, experts in the field provide updates on recent developments in X-ray analysis, focusing on the technique and relevant applications.
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Testing Electronic Device Components for RoHS/WEEE Compliance Using Microwave Digestion and ICP-OESThe combination of microwave sample preparation and ICP-OES is examined to meet the challenges of measuring a suite of heavy metals in a wide range of electronic components for RoHS/WEEE compliance.
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Portable Raman Spectrometers: How Small Can They Get?There is a growing desire among spectroscopists for having instruments small enough to be taken to the sample, as opposed to bringing the sample to the instrument. The result is that Raman spectrometers are becoming more miniaturized. Because these instruments come at a lower cost and offer distinct advantages over traditional spectrometers, the expectation is that a rapid expansion of when these instruments are applied will come forthwith. We offer a preview of how future miniaturized Raman spectrometers might look.
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Portable Raman Spectrometers: How Small Can They Get?There is a growing desire among spectroscopists for having instruments small enough to be taken to the sample, as opposed to bringing the sample to the instrument. The result is that Raman spectrometers are becoming more miniaturized. Because these instruments come at a lower cost and offer distinct advantages over traditional spectrometers, the expectation is that a rapid expansion of when these instruments are applied will come forthwith. We offer a preview of how future miniaturized Raman spectrometers might look.
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Morphologically Directed Raman Spectroscopic Analysis of Forensic SamplesCan morphologically directed Raman spectroscopy obtain more discriminatory information from forensic samples than current tools?
