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Related Concept Videos

Total Internal Reflection Fluorescence Microscopy01:05

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Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
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Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview01:13

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Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
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Interaction of EM Radiation with Matter: Spectroscopy01:12

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Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...
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Spectrophotometry: Introduction01:16

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Spectrophotometry is the quantitative measurement of the absorption, reflection, diffraction, or transmission of electromagnetic radiation through a material as a function of the intensity and wavelength of the radiation. A spectrophotometer is a device used to measure the change in the radiation intensity caused by its interaction with the material.
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Infrared (IR) Spectroscopy: Overview01:09

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When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
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Related Experiment Video

Updated: May 2, 2026

Total Internal Reflection Absorption Spectroscopy TIRAS for the Detection of Solvated Electrons at a Plasma-liquid Interface
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Total internal reflection spectroscopy for studying soft matter.

David A Woods1, Colin D Bain

  • 1Department of Chemistry, Durham University, South Road, Durham, UKDH1 3LE. david.woods@durham.ac.uk c.d.bain@durham.ac.uk.

Soft Matter
|March 22, 2014
PubMed
Summary
This summary is machine-generated.

Total internal reflection (TIR) spectroscopy is a versatile method for soft matter analysis at interfaces. This review covers TIR principles, experimental design, applications, and limitations, aiding researchers in utilizing and critically evaluating these techniques.

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Area of Science:

  • Surface science
  • Spectroscopy
  • Soft matter physics

Background:

  • Total internal reflection (TIR) spectroscopy is a crucial technique for investigating soft matter behavior at interfaces.
  • Understanding interfacial phenomena is vital across various scientific disciplines, including materials science, chemistry, and biology.

Purpose of the Study:

  • To provide a comprehensive tutorial review on the principles, experimental design, and applications of TIR spectroscopy.
  • To equip researchers with the knowledge to apply TIR techniques in their studies and critically analyze existing literature.
  • To highlight the limitations and potential pitfalls associated with TIR spectroscopy.

Main Methods:

  • Overview of fundamental principles of total internal reflection.
  • Discussion of experimental design considerations for TIR spectroscopy.
  • Detailed examination of specific TIR techniques, including attenuated total reflection infrared spectroscopy (ATR-IR), TIR fluorescence, TIR Raman scattering, and cavity-enhanced methods.

Main Results:

  • Comprehensive summary of the diverse applications of TIR spectroscopy in soft matter research.
  • Identification of key limitations and potential challenges in implementing TIR techniques.
  • Guidance on critically evaluating research employing TIR spectroscopy.

Conclusions:

  • TIR spectroscopy offers powerful capabilities for interfacial analysis of soft matter.
  • This review serves as a valuable resource for researchers seeking to understand, apply, and critically assess TIR spectroscopic methods.
  • Awareness of technique-specific limitations is essential for robust scientific interpretation.