Combined Electrochemical Raman Spectroscopy for Process Characterization

Raman spectroscopy has proven to be an effective technology to characterize conductive polymers in combination with conventional electrochemical experiments. Coupled with electrochemical techniques, it allows in-situ characterization of the molecular structure changes of polymers during the course of electrochemical reactions.

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Low Frequency Raman Spectroscopy

Raman Spectroscopy is an advantageous analytical tool that allows for the measurement of molecular structure and identifying chemical composition of materials based on the rotational and vibrational modes of a molecule. Access to lower frequency regions with Raman spectroscopy provides key information for applications in protein characterization, polymorph detection and identification, along with material phase and structure determination.

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Raman Spectroscopy in Archaeological Studies

Chemical identification is an important part of the study of archaeological artefacts and artworks. This information can be obtained through nondestructive Raman analysis directly within the environment in which the artefacts are discovered. This information is extremely helpful in forming the basis of identifying pigments, dyes and paints used; thus indicating when and how a piece was made, giving insight into the time period of creation, and suggesting the authenticity of the object.

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Portable Raman Instrumentation for SERS Applications

Surface enhanced Raman spectroscopy (SERS) has attracted significant attention in recent years due to rising interest in trace level detection in the field for applications such as environmental safety, food safety, and homeland security. The development of SERS technology is being driven by a need to overcome the technical barrier of the lower detection limit with Raman spectroscopy as well as the need for trace level detection of explosive compounds, chemical residuals, and biomedical diagnostics.

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Portable Raman Spectroscopy for the Study of Polymorphs and Monitoring Polymorphic Transitions

Raman spectroscopy is used for material characterization by analyzing molecular or crystal symmetrical vibrations and rotations that are excited by a laser, and exhibit vibrations specific to the molecular bonds and crystal arrangements in the molecules. Due to its excellent spectral specificity, Raman technology is a valuable tool in distinguishing different polymorphs, and can also be used in the study of solvate forms.

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Carbon Black At-line Characterization Using a Portable Raman Spectrometer

Carbon black is a form of amorphous carbon. It is mainly used as reinforcement filler in automobile tires and other rubber products, but is also used in pigments, paint, and carbon paper. Raman spectroscopy is a very effective analytical technology to characterize carbon materials. The fast characterization of carbon black material using Raman spectroscopy is discussed here to demonstrate that Raman technology is well suited for carbon black material characterization.

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Choosing the Most Suitable Laser Wavelength For Your Raman Application

Dispersive Raman spectroscopy has increasingly been implemented for material identification due to its portability and sampling flexibility. When choosing a Raman instrument, a primary concern is the wavelength of the laser that is integrated into the Raman spectrometer system. Though the Raman shift of any material is only related to the material’s specific chemical structure and is independent of the excitation wavelength, different wavelengths have their strengths and weaknesses.

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B&W Tek Raman Solution Suite for Forensics Applications

Law enforcement personnel, laboratory technicians, crime scene investigators and many others face a significant challenge for identification of materials in a forensic investigation, as they must routinely examine materials such as gun powder residue, drugs of abuse, hair sampling, chemical precursors and more. In these cases, technologies such as Raman spectroscopy can be successfully used for cursory identification of multiple forensic sample types either directly in the field or in the lab.

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Identification of Forensic Fabrics Using a Portable Raman Spectrometer

At a crime scene, a police officer collects a fiber sample that may prove to be invaluable evidence in identifying a criminal or exonerating an innocent person. In this study, we show how Raman spectroscopy, which has been studied extensively for forensic fiber analysis, is a perfect fit for this scenario because of the high selectivity of Raman signatures, non-destruction nature of the test, and the ability to conduct the analysis without any sample preparation.

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Quantitative Analysis of APIs in Blending Mixtures and Tablets

Pharmaceutical tablets consist of an Active Pharmaceutical Ingredient (API) with excipients including fillers, binders, and lubricants which are blended together to form a homogenous mixture. Blending process control is very important for final tablet quality, but detection or characterization of raw material variations and final blend homogeneity can be very challenging. In this app note, blend homogeneity is quantified using a portable Raman spectrometer combined with chemometric software from B&W Tek.

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