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Spectra

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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Aluminum Sorting with Portable LIBS Instrument

Posted on: October 20th, 2020

Laser Induced Breakdown Spectroscopy (LIBS) is a type of atomic emission spectroscopy which uses a highly energetic laser pulse as the excitation source. The laser is focused to form a plasma, which atomizes and excites samples. The formation of plasma begins when the focused laser achieves a certain threshold for optical breakdown. This can be…

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Chemometric Model and Absorption of Protein Powder

Posted on: September 28th, 2020

Absorption measurements can be used to determine the properties of various samples, such as concentrations of chemicals and the quality of plastics. Not only can absorption spectra be used to identify the characteristics of many types of samples, but it can also be used to characterize the unique spectra of each sample to generate a…

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Fluorescence of Green and Blue Proteins

Posted on: August 24th, 2020

Measuring the Fluorescence of Green and Blue Proteins in Algae: Bioluminescence from marine microorganisms has been observed by many people at various beaches across the world. A bright bursting energy of light is observed when energy is transferred to the fluorescent protein (GFP). One example of this is in Aquorea Victoria, a bioluminescent jellyfish. The…

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UV Transmission of Sunglasses

Posted on: July 25th, 2020

Transmission spectra can be used in a wide range of measurements and data collection to reveal unique and unknown properties of materials. It is crucial to understand how materials that we interact with behave when exposed to photons across the UV/VIS/NIR spectrum. One excellent example of this is sunglasses. It is important to know if…

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NIR Reflection of Plastic for Recycling Applications

Posted on: May 27th, 2020

The importance of NIR reflection spectra has proven to be a reliable method of identifying unique characteristics and properties of various materials, including types of plastics. Different types of plastics may look similar to one another at an initial glance with the naked eye, but evaluating the NIR reflection properties of plastics can reveal just…

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Absorption and Reflection Spectra of Lichen

Posted on: April 27th, 2020

Conducted by: David Ademe, Avantes Inc. Theme: Absorption/Reflection of Lichen Background/Applications: Absorption and reflection spectra can reveal the unique properties of many different types of materials and samples. This includes biological samples and plant life. This can range from leaf’s, flower petals, grass and lichen. The optical properties of lichens have been traditionally explored in…

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Near-infrared Absorption and Reflection Chemometrics

Posted on: March 25th, 2020

Near-infrared Absorption and Reflection measurements can be used to determine the properties of various samples, such as concentrations of chemicals and the quality of plastics. Not only can absorption spectra be used to identify the characteristics of many types of samples, but it can also be used to characterize the unique spectra of each sample…

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Model for the Identification of Edible Oils

Posted on: February 26th, 2020

Background/Applications: Absorption measurements can be used to determine the properties of various samples, such as concentrations of chemicals and the quality of plastics. Not only can absorption spectra be used to identify the characteristics of many types of samples, but it can also be used to characterize the unique spectra of each sample to generate…

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Plasma Measurements and Diagnostics

Posted on: January 23rd, 2020

Background/Applications: Optical Emission Spectroscopy, often referred to as OES, is a widely used analytical method to determine the elemental composition of a broad range of metals. Types of samples which can be tested using OES include samples from the melt in primary and secondary metal production, and in the metals processing industry. OES commonly uses…

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