We often use cluster analysis and PCA to analyse the Raman images of biological tissues and cells. These powerful chemometric methods can detect structures within biological samples which often contain no pure biochemicals. The EmptyModelling feature is a user-friendly version of multivariate curve reso...
Presumptive testing completed without handling bulk material has two possible avenues: (1) utilizing spectroscopy-based techniques (e.g., Raman spectroscopy [[2], [3], [4]], Fourier transform infrared (FTIR) spectroscopy [5,6]) that can penetrate packaging material or (2) utilizing trace det...
Ultrafast chemical reactions can be initiated using a laser and the behaviour of the molecules monitored using infrared or UV-Vis spectroscopy. The ultrafast in ultrafast spectroscopy refers to the pulse duration of the light used to illuminate the sample and initiate or detect reaction; whilst the...
Microscopescan help when looking into foreign materials, such as a strand of brush hair, a fiber from a cloth stuck to the paint, or even a partial fingerprint of the painter. A fingerprint obtained from a suspected piece of forgery can be matched with those obtained from an authenticated wo...
The rapid advancement of nanotechnology has raised concerns about its environmental, health, and safety risks.8NPs, due to their small size and unique properties, pose potential health risks as they can cross biological barriers, entering the body through inhalation or ingestion, and affecting the ...
This plasma is ignited and emits a unique emission spectrum that can be used to detect and quantify individual elements present in the sample. As well as detecting metals and semimetals, Spark Spectroscopy can be used to identify non-metals such as oxygen, nitrogen, carbon, sulphur and ...
The plasmon by its nature creates an electrical field around the excited gold nanoparticles that enhances the Raman scattering cross section of nearby molecules. This phenomenon is the basis of surface-enhanced Raman spectroscopy (SERS) and can lead in, theory, to single molecule detection and ident...
For very fast reactions, or for reactions that at times exhibit periods of rapid change in composition, more data points are required than offline methods can provide. Real-time, in-situ spectroscopic analysis by ReactIR or ReactRaman is ideal for these situations as well as for reactions that...
(MRI), and, thus, yields anatomical information, which can be employed to detect, localize and describe cancerous tissue in-vivo. However, cancer is frequently not detectable from plain anatomical images because of the lack of morphological alterations, but can be identified by virtue of ...
Raman spectrometry has also been proposed alone and has the major advantage to determine the analyte without destruction through its container and thus limiting chemical contaminations [9, 10]. The major problem of those analytical techniques is that they are not able to detect and quantify all ...