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Spectra

Irradiance and field measurements

Posted on: November 22nd, 2021

Conducted by: David Ademe (Applications Engineer), Avantes Inc. Background/Applications: Spectral irradiance is the energy of a surface per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. The two forms have different dimensions: spectral irradiance of a frequency spectrum is measured in watts per square…

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How Rotten is Your Pumpkin?

Posted on: October 27th, 2021

Conducted by: David Ademe, Avantes Inc. Theme: Agriculture Background/Applications: Absorption and reflection measurements can be used to determine the freshness of various crops, from grains to fruits and vegetables. NIR spectroscopy is leading the way for the future of agriculture and food production for both qualitative and quantitative measurements. In this experiment, we will be…

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Absorbance of Food Colorant using ATR Probe

Posted on: September 27th, 2021

Conducted by: David Ademe, Avantes Inc. Theme: Absorbance/ATR Probe Background/Applications: Absorbance spectroscopy can bring entirely new perspectives on samples through a wide range of industries. This includes industrial lines, where continually monitoring of water, fluids, and chemicals is necessary to ensure consistent quality and specifications.  Many inline control systems use UV/VIS absorbance systems to control…

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Low Limits of Detection in Water Particles

Posted on: August 26th, 2021

Conducted by: David Ademe, Avantes Inc. Theme: Absorbance Background/Applications: Absorbance spectroscopy can bring entirely new perspectives on samples through a wide range of industries. This includes the water industry, verifying the quality and purity of water to determine what contaminants and particles may be present in the water, that may not be visible to the…

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Irradiance Measurement with Avantes Solar Simulator

Posted on: July 26th, 2021

Background/Applications: Spectral irradiance is the irradiance of a surface per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. The two forms have different dimensions: spectral irradiance of a frequency spectrum is measured in watts per square meter per hertz (W·m−2·Hz−1), while spectral irradiance of…

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UV Radiometry Spectra

Posted on: April 21st, 2021

Radiometry deals with the measurement of all optical radiation inclusive of the visible portion of this radiant energy. Irradiance is a parameter of radiometry that describes the amount of radiant power upon a surface per unit area. These measurements can be done in the UV, VIS and NIR wavelength ranges. Irradiance measurements are useful in…

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Parylene Thin Film Measurements

Posted on: March 17th, 2021

Thin films play a vital role in a variety of industries and applications, such as consumer electronics, semiconductors and optics. Thin film deposition refers to the process of applying a very thin film of material, typically between a few nanometers to 100 micrometers, onto a substrate surface to be coated, or onto a previously deposited…

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Chemometrics/Fruit Analysis

Posted on: February 11th, 2021

The application of visible (400 nm to 750 nm) and near-infrared red (750 nm to 2500 nm) region spectroscopy to assess fruit and vegetables is an efficient way to measure the properties of the fruit, as opposed to multi or hyperspectral imaging. Vis spectroscopy targets color assessment and pigment analysis, while NIR spectroscopy has been applied to…

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Fluorescence Spectroscopy for Non Invasive Procedures

Posted on: January 11th, 2021

Conducted by: David Ademe, Avantes Inc. Theme: Fluorescence Background/Applications: Fluorescence spectroscopy can be used in a wide range of applications, including medical research and analysis. There are a number of researchers that use a fiber-optic probe for in vivo fluorescence spectroscopy to study and test for cancerous cells. Fiber optic needle biopsy plays an important…

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Thin Film Spectra Experiment

Posted on: November 23rd, 2020

Conducted by: David Ademe, Avantes Inc. Theme: Thin film Measurement Background/Applications: Thin films play a vital role in a variety of industries and applications, such as consumer electronics, semiconductors and optics. Thin film deposition refers to the process of applying a very thin film of material, typically between a few nanometers to 100 micrometers, onto…

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