Application Notes

Indocyanine Green fluorescent dye displays fluorescence in the near infrared region in the vicinity of 810 nm; however, measurement in wavelength regions greater than 750 nm has been difficult. This note presents an example of measuring Indocyanine Green with good sensitivity while obtaining corrected spectra in real time.

For all measurements, a Harrick Wire Grid Polarizer (KRS-5 substrate) was used. The polarizer was oriented in the same position for both background and sample measurements. All spectra were collected using an FT-IR spectrometer at an 8 cm-1 resolution averaged over 32 scans.

In this application note, we focus on the peripheral artery disease (PAD) and its treatment, utilizing NeoFox optical oxygen sensor system to demonstrate how oxygenation increases stem cell survival and leads to improved therapeutic outcomes for PAD patients.

An infrared transmission spectrum of lens tissue was collected and compared with a sample spectrum collected in the FT-IR sample compartment. Benefits of using an integrating sphere are discussed.

Combined investigations in the far and mid infrared region in a single scan can offer great value for the analysis of polymeric materials. With the use of optical components optimized for combined FIR-MIR spectroscopy, consisting of a wide range mid to far IR beamsplitter and detector, the investigation of both spectral regions in single step is possible.

Learn how to measure properties of Gold Nanoparticles that have unique optical, electronic, and thermal properties and used in a wide range of applications including diagnostics assays, microscopy and electronics.

BaySpec’s OCI-UAV hyperspectral imagers are ultra-compact, easily deployable, high-performance hyperspectral cameras designed specifically for use on small unmanned aerial vehicles (UAVs), to monitor the details of spatial, temporal, and spectral representation of ground objects.

Data for a handheld LIBS device (SciAps Z-500) is presented demonstrating in-field measurement of several elements critical for geochemical applications. In some cases these elements have never before been measured with a handheld device.

Learn how the spectral characterization of Enhanced Spectral Reflector (ESR) films is an important step in developing new novel applications for these unique materials. From enhanced skylights to brighter displays ESR films play an important role.

In addition to fluorescence avoidance, 1064nm Raman reduces stringent sampling conditions necessary at shorter wavelengths. Concerns about low Raman scattering cross-sections can be totally compensated by increased laser power.

CEM's Discover SP-D Gold microwave digestion system with high temperature and pressure chamber enables safe, fast, and automated preparation of previously difficult sample types

The 12 W miniature source has a higher voltage and a much higher emission current than our present miniature X-ray sources, which is an advantage for a number of applications.

The majority of environmental laboratories are currently using traditional techniques like cold vapor atomic absorption to analyze samples for mercury content.

The TSI® LIBS Desktop Analyzer laser induced breakdown spectroscopy (LIBS) instrument allows simultaneous determination of all detectable elements present in the material being analyzed.

Portable 785 nm and 1064 nm excitation wavelength dispersive Raman instruments have proven their worth in materials identification, especially for forensics, pharmaceutical raw materials inspection, and first responders.

Inks and pigments with optically unique properties can provide quick visual verification of authenticity, and can be difficult to replicate.

In the agri-food sector it is important to not only study the soil composition and use of fertilizers, but also the uptake of nutrients and potentially toxic elements within the plants and crops themselves.

Elemental ratio determinations in foraminiferal calcite require the measurement of trace levels of Na, Mg, Sr, and ultra-trace levels of Li, B, Ba, Cd, Mn, U in a calcium rich matrix and ratioed to calcium.

Monolayers and other thin coatings on Si and other high refractive index substrates are of key importance in materials science, bioscience, synthetic organic, and semiconductor research.

Measuring the transmission of diffuse samples such as paper or filled polymer films requires an integrating sphere to obtain accurate transmission values and useful chemical information, because the IR light is scattered as it passes through the sample. An integrating sphere serves as a collection device for the scattered light.

Since Sir C.V. Raman discovered the Raman effect in the 1920s, it has become essential to many fields of research and industry.

Strict production requirements, consumer demand, and at times poor harvests, result in high prices and can limit the supply of EVOO. Consequently, EVOO is susceptible to economically motivated adulteration with less expensive oils and claims of authenticity continue to be a concern.

Diamond is an important material choice for sampling optical elements in Fourier transform-infrared (FT-IR) spectroscopy.

Infrared and Raman spectroscopy are critical analytical techniques in the pharmaceutical industry, used for the structural elucidation and characterization of organic materials such as new drug candidates, impurities, metabolites, and excipients.

Spectroscopic techniques have a long history as quantitative methods for on-line and at-line use in a wide range of industries, where, in many cases, they are more accurate than the reference methods. These processes are typically continuous, but time-depending processes such as batch processes are widely used in many industries.

Surface enhanced Raman spectroscopy (SERS) has expanded the applications of Raman spectroscopy to include trace analysis of materials such as explosives residues, evidence at crime scenes, chemical warfare agents and pesticides. As a label-free technique, SERS is also well suited to biosensing, from blood glucose to diagnosis of diseases like cancer, Alzheimer’s and Parkinson’s.

While traditional near-infrared Raman systems offer non-contact identification of several explosive substances, they are prone to interfering fluorescence. 1064nm dispersive Raman systems offer reduced interference and higher prediction accuracy.

All optical coating that receive light from, or direct light into, non-normal angles-it is vital to characterize the wavelength-, angle-, and polarization-resolved reflectance and transmittance. Learn how to measure new materials that have emerged to meet new applications.

In gemology the TSI ChemReveal LIBS Desktop Analyzer has been used to aid gemologists in gemstone classification. This paper highlights study results of this instrument in some of those applications.

Combining a high precision FT-IR spectrometer with a long pathlength gas cell provides a powerful tool for analyzing trace levels of contaminants in air and other gas mixtures (Figure 1). Two important applications of this are ensuring air quality and the purity of breathing oxygen and compressed air.