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spectrophotometer White Papers
Characterization of SERRS Nanoparticles Using UV-Vis and Raman Spectroscopy
Surface-enhanced resonance Raman scattering (SERRS) is a technique that offers unparalleled sensitivity and specificity in nondestructive spectroscopic detection. It combines surface-enhanced Raman scattering (SERS) and resonance Raman spectroscopy...
UV-Vis Spectroscopy for Characterising the Optical Properties of Gold Nanoparticles
UV-Vis spectroscopy is routinely used in analytical science in part because it is a simple way of studying a sample’s optical properties over the UV and visible regions of the electromagnetic spectrum. Here, we used the DS5 UV-Vis Spectrophotometer...
High Absorbance Scanning with the PerkinElmer LAMBDA 850+ UV/Vis and LAMBDA 1050+ UV/Vis/NIR Spectrophotometers
This application note describes the procedure for high absorbance scanning with the reference grade PerkinElmer LAMBDA™ 850+ UV/Vis and LAMBDA 1050+ UV/Vis/NIR double monochromator spectrophotometers.
Trusted Glass Measurements for Better Product Development
The PerkinElmerUL270 integrating sphere is a unique accessory that allows new accuracy to be achieved in the measurement of light-diffusing materials and adequately solves the various measurement problems involved in measuring transmittance and...
Gas Purging Keeps UV Spectrophotometers Healthy
Measuring in the far-UV (FUV) 120-220 nm presents unique challenges. The high energy that makes UV light interesting can cause photochemical formation of organic films on optical surfaces. These films cause increasing, wavelength-dependent loss of...
A New Spectral Analysis System Designed to Measure High-Performance Thin-Film Optical Filters
The HELIX Spectral Analysis System was designed to address the limitations of most commercially available spectrophotometers when measuring high-performance thin-film optical filters. The system’s capabilities are four-fold: it is able to track...
Emission Spectroscopy at High Speeds: Essentials and Applications
High speed Spectrophotometers have recently become available for the study of high speed events. In some cases, these events occur within a fraction of a second. To fully characterize these events, the full spectra has to be obtained in less than a...
Measuring Optical Densities Over 10 Abs on the Agilent Cary 7000 Universal Measurement Spectrophotometer (UMS)
High blocking optical filters deliver critical optical control in a wide variety of consumer and industrial products. Highly attenuating (i.e., high optical density) filters are used in personal protective equipment, such as laser safety eyewear,...
The Measurement of High Optical Densities (up to 8 Abs) in the Near-Infrared
The optical densities of various materials used in the manufacture of laser safety eyewear have been determined in the NIR. The lens materials were measured over wavelength ranges corresponding to the laser wavelengths for which the eyewear was...
How to measure optical filter spectra accurately
Optical filters play an important role in enabling applications such as fluorescence microscopy and Raman spectroscopy. In these applications there are two distinct types of beams: the illumination (or excitation) beam and the signal (or emission)...
(10 results found)
May 2024
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