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    UV-visible-NIR and Raman analysis of microscopic sample areas.

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    Leading technologies to yield superior results.

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CRAIC Technologies provides superior UV-visible-NIR microanalysis solutions including Microspectrophotometer & Microspectrometer

                              Raman Spectroscopy In Forensic Science

Forensic analysis by Raman spectroscopy

Raman Microspectrometers are used to identify drugs, explosives and trace evidence.

contamination analysis

 

Raman spectroscopy of forensic evidence

Raman spectrum of a common drug.

 

 

Raman spectroscopy is used to identify many types of forensic evidence such as drugs, explosives and trace evidence.

Drugs: Raman microspectroscopy is commonly used to identify even microscopic amounts of drugs even when mixed with other materials.

Explosives: Raman spectroscopy can identify many types of explosives from even the smallest samples.  Many explosives have strong and readily identifiable Raman signatures.  Even trace residues may be identified using Raman microspectroscopy.

Trace Evidence: Raman spectroscopy is useful in analyzing trace evidence such as paint chips and textile fibers.  Dyes and pigments may also be analyzed using resonance Raman spectroscopy which yields on the order of a millionfold increase in signal if the correct lasers are used  This necessitates a system with multiple lasers.  

To learn more about Raman microspectroscopy, select one of the following links: 

The Science of Raman Microspectroscopy

Units Used in Spectroscopy

Raman Microspectrometer Design

Raman Spectrometer Design

Microscope Objective Types

How a Raman Microspectrometer is Used

CRAIC Apollo™ Raman Spectrometer


 

                                                 Raman Spectroscopy of Semiconductors

Contaminat analysis by UV microspectroscopy

Raman microspectrometers are used to identify contaminants on precision devices.

contamination analysis

 

785 nm Raman spectrum of silicon

Raman spectrum of a silicon device

 

 

Raman microspectroscopy is used to identify contaminants, measure silicon crystal structure and stress in silicon structures.

Contamination analysis is a difficult problem for any failure analysis laboratory.  It is especially challenging if the contamination has occured in a supposedly clean environment. Raman spectroscopy, especially Raman microspectroscopy, is essential in identifying the contaminants once they have been located.  Raman spectroscopy is ideal due to its small sampling and the fact that it is a vibrational technique with the ability to identify many organic components.

Silicon Crystal Form: Raman spectroscopy can measure the difference between different crystal stuctures of Silicon.  For example, there are variations in the Raman spectra when comparing polycrystalline to amorphous silicon.

Strain in Silicon Structures: Raman spectroscopy detects strain in silicon structures by measuring the lattice vibrations sensitive to strain.  This makes it the perfect tool for such applications as monitoring wafers. 

To learn more about Raman microspectroscopy, select one of the following links: 

The Science of Raman Microspectroscopy

Units used in spectroscopy

Raman Microspectrometer Design

Raman Spectrometer Design

Microscope Objective Types

How a Raman microspectrometer is Used

CRAIC Apollo™ Raman Spectrometer


 

      Fiber and Hair Analysis

Fiber and hair analysis

Microspectrophotometers are used for spectral analysis of hairs and fibers by the cosmetics industry and forensic analysis.

 

 

 

 

 

Hairs and fibers are analyzed with a microspectrophotometer

UV-visible-NIR absorbance spectra of three single textile fibers.

 

 

Microspectrophotometers are used to analyze pigments, dyes and substrate materials of textile fibers and dyed hairs.

Textile fibers are prevalent in all aspects of our lives.  They are used in everything from clothing to floor coverings to umbrellas and much more.  The substrate of the fiber consists of either natural, such as cotton or wool, or man-made materials, such as Nylon™ or Rayon™.  For most products, the fibers are colored either with dyes or with pigments which can either be adsorbed on the surface or inside the fiber substrate material itself.  Additionally, there are specialty materials that may be added.  Examples of these are ultraviolet absorbers (UVA) to protect a fabric from solar damage.  

UV-visible-NIR microspectrophotometers, such as the 20/30 PV™, are used to analyze the dyes and pigments in both hairs and fibers.  This is done by studying the absorbance and fluorescence spectra of these microscopic samples.    Microspectrophotometers are also used to identify the polymers contained in man-made fibers.  This is done by examination of the ultraviolet absorbance spectra to identify the polymer. 

Dyed hairs can be animal or human hair.  There are many different types of chemistries and they have many different effects on the hairs themselves.  These are analyzed in the same manner as textile fibers.  Interestingly, only dyed hairs are analyzed.  The reason for this is that the color of natural hair changes along the length of the hair shaft.  The cause may be anything from stress in our lives to sun or even swimming in the ocean.  While dyed hair also shows variations along the length of the hair, it is not as dramatic.  In fact, this variation can be mapped with the CRAIC FiberPro™ to learn more about the long term stability of hair dyes, for example.  

To learn more about microspectroscopy and applications such as hair and fiber examination, select one of the following links: 

 

Science of Microspectrophotometers

Uses of Microspectrophotometers

20/30 PV™ Microspectrophotometers

CRAIC FiberPro™ Fiber Mapping Solution

 

The Science Behind the Microscope Photometer

How a Microscope Photometer Works

Units of Microscope Photometry

CRAIC Microscope Photometer

 

 

 


A microscope photometer measures the intensity of light from a microscopic sample. This light may either be reflected from the sample, transmitted through the sample or emitted from the sample by such processes as electroluminescence or fluorescence.
Biological

Intracellular Calcium Ratiometry

Immunofluorescence

Immunohistochemistry

Microfluidic Device Development

Cytometry & Cytophotometry

Enzyme Measurements

Feulgen DNA Measurements

Cellular Dynamics

DNA Studies

Ion & pH Measurements with Dyes

RNA Cytochemistry

Industrial

Lighting

Materials Research

Electroluminescence Metrology

Luminance

Contrast Ratio

Angle Dependent Properties

Geology

Vitrinite Coal Reflectometry

Kerogen Analysis

Mineralogy

And more...

Thickness Measurements by Optical Density

Chemiluminescence

 

 

 

UV Microscope Design

UVM-1 UV Microscope

NIR Microscope Applications

UVM-1 NIR Microscope

UV microscope image of DNA protein crystals

DNA Protein crystals

UV microscope image of cell

UV microscope image of cell

Contamination of slider by UV microscopy

Contamination of disk drive head under UV microscope


 

The UV microscope is designed to image in regions beyond the visible range. While the usable spectral range of this microscope covers the UV, visible and near infrared regions, their optics and light sources are optimized so that they are more effective in the UV region. As such, there are many uses for UV microscopes as they can non-destructively image microscopic samples in regions other than the visible.

Pharmaceutical & Biology

Locating Protein Crystals

Pharmaceutical quality control

Active ingredient dispersal imaging

Contaminant analysis

Cellular Imaging

Semiconductor & Displays

Locating microscopic contaminants on devices

Ultra-high resolution imaging

Materials research

OLED development

Microfluidic Device Development

Geology

Mineral imaging

Petroleum analysis

Art

Clearcoat imaging on paintings

Dye identification on textiles

And more...

UV-visible-NIR microscopes are general purpose laboratory instruments. They have not been cleared or approved by the European IVD Directive, the United States Food and Drug Administration or any other agency for diagnostic, clinical or other medical use.