IRT, Raman

Advanced SearchNAV

Optional Software for Particle Search and Identification

Advanced SearchNAV (ASN) is an optional feature to the standard SearchNAV function. ASN automatically searches for measurement points based on size, shape, color, and contrast, then simultaneously performs batch processing of the measurement points while queueing each measured point for qualitative analysis by performing a spectra search using KnowItAll. The identified sample name is displayed on top of the observed image at the measurement point. ASN can be performed on an observation image or a color map image.  Binarization allows for the threshold setting to be set at an auto or manual mode.

Particle Search Analysis

An optical image of the sample microscope position when the mapping data was measured.

 

The binarization result is overlaid on the optical image in red (default). There are two options for binarization: binarization for bright samples and binarization for dark samples.

 

Narrow down the Search Results of the optical image by setting the sample search size. The Search Results are overlaid on the optical image in blue (default).
The Search Results of the optical image can also be refined using the Search Parameters below.

Narrow down the Search Results of the optical image by setting the sample search size. The Search Results are overlaid on the optical image in blue (default).
The Search Results of the optical image can also be refined using the Search Parameters below.

The Search Results (filled) overlaid on the optical image in blue (default) with the Binarization overlaid on the optical image in red (default).

 

Search Parameters

  • Area

  • Ferret diameter

  • Aspect Ratio

  • Circularity

  • Luminance

  • Color

Advanced Spectra Search (ADSS)

The Advanced Spectra Search (ADSS) program comes standard with Advanced SearchNAV (ASN).
ADSS aids in the analysis of spectra for unknown samples. The program uses two functions to identify the sample: Classification and Search.

Classification

ADSS classifies the spectrum of an unknown sample into one of 35 different categories.

Search

ADSS compares the spectrum of an unknown sample with spectra in standard libraries to determine the closest standard sample match.

Features of the ADSS Program

  1. Spectra are classified using a machine learning technique without the use of libraries.
  2. The validity of the classification results is checked based on the characteristic band positions and the spectral intensity and can be visually confirmed.
  3. The categories and probabilities are displayed in a table and a bar graph, and the classification results can be saved in text format.
  4. The assist function supports the interpretation of the classification results.
  5. The combined use of spectrum classification and searching enables detailed analysis of unknown samples.
  6. A spectrum search can be performed multiple times and the analysis results can be refined by changing the search criteria.
  7. The results for specified conditions can be displayed in descending order of match rate. The classification and search results are saved together and can be reopened using the ADSS program.
  8. User libraries for spectrum searching created by the Spectrum Library Manager program can be used with the ADSS program.

Classification

Open a spectrum file for an unknown sample. Select the Classification check box and click Run. The Classification results are displayed in the Classification Hit List tab shown in the bottom of Figure 1. The unknown sample spectrum and the associated Classification category spectrum are shown at the top of Figure 1. The 35 Classification categories are displayed in Table 1.

Advance Spectral Search
Figure 1. Classification Results

Table 1. ADSS Classification Categories

AcetoneAcrylic resinsAlcohol
CarbonatesCarboxylic acidsCarboxylic acid esters
Carboxylic acid esters (oil)Carboxylic acid saltsCellulose and sugar
Epoxy resinsFluoridesHydrocarbons
Hydrocarbons (polyethylenes)Hydrocarbons (polypropylenes)Nitriles
Phenolic resinsPhosphatesPolyamides
PolycarbonatesPolyethersPolyethers (polyacetal)
PolyestersPolimidesPolyvinyl acetates
Polyvinyl alcoholPolyvinyl chloridesProteins
SilicaSilica (talc)Silica (kaolin)
SiliconeSytreneSulfates
UrethanesWater

Import Custom/Third-Party Libraries

JASCO provides several library files for the ADSS program as standard and offers an optional plastics library for purchase (Figure 2/Table 2).

The ADSS program can also import third-party libraries or custom user-buildable libraries created in the Spectra Library Manager program.

Table 2. ADSS Libraries

Food AdditiveForeign Materials by ATRForeign Materials
InorganicInorganic FIROrganic
PolymerPlastics (Optional)
Figure 2. Register Library

Search

Open a spectrum file for an unknown sample and select the Search check box. Click Library to select the libraries you would like to register for the Search. The Search results are displayed in the Hit List tab shown at the bottom of Figure 3. The unknown sample spectrum and the associated Search spectrum are shown at the top of Figure 3.

SEARCH RESULTS
Figure 3. Search Results