ISO 18115-3:2022

Overview

ISO 18115-3:2022 - Surface Chemical Analysis - Vocabulary - Part 3: Terms used in Optical Interface Analysis is a key international standard published by the International Organization for Standardization (ISO). This document provides comprehensive terminology and definitions essential for surface chemical analysis, specifically focusing on optical interface analysis. Techniques addressed include ellipsometry, Raman spectroscopy, and nonlinear optical methods, along with general terms related to optical properties and phenomena.

By standardizing vocabulary across these disciplines, ISO 18115-3:2022 supports accurate communication, data sharing, and collaboration among scientists, researchers, and engineers in the fields of material science, chemistry, physics, and biology.

Key Topics

• General Optical Terms: Definitions of core concepts such as background signal, peak height, peak width, optical filters (edge, notch, neutral density), and photodetectors (e.g., CCD, photomultiplier tubes).
• Properties of Light: Explanation of terms like polarization (linear, circular, elliptical), coherence (spatial and temporal), wavelength, wavenumber, radiance, and luminance. This section also clarifies the meaning and significance of optical constants and the behavior of light on material interfaces.
• Optical Properties from Interaction with Media: Covers absorption coefficient, birefringence, refractive index, critical angle, dielectric function, and dichroism. It standardizes descriptions of how optical waves interact with different media and materials.
• Technique-Specific Terminology:
  • Ellipsometry: Terms specific to this surface optical analysis method for determining film thickness and optical properties.
  • Raman Spectroscopy: Definitions related to inelastic light scattering, key for chemical and molecular analysis.
  • Nonlinear Optical Techniques: Vocabulary related to advanced applications such as multi-photon fluorescence, essential for high-resolution surface chemical imaging.

Applications

ISO 18115-3:2022 is crucial across multiple application areas:

• Surface Characterization: Enables consistent descriptions when analyzing thin films, coatings, and surface modifications on materials using optical methods.
• Quality Control and Assurance: Supports industrial and laboratory environments by standardizing the measurement and reporting of surface chemistry using ellipsometry or Raman spectroscopy.
• Research and Development: Fosters clear, standardized communication for interdisciplinary collaboration in material science, nanotechnology, biochemistry, and photonics research.
• Instrumentation and Method Development: Aids manufacturers and users of spectroscopic and optical instruments to align documentation and training with internationally recognized terminology, ensuring reliable and comparable results.

Related Standards

For holistic surface chemical analysis and alignment across various analytical techniques, consider referencing these related standards:

• ISO 18115-1: Surface Chemical Analysis - Vocabulary - Part 1: General Terms and Terms Used in Spectroscopy
• ISO 18115-2: Surface Chemical Analysis - Vocabulary - Part 2: Terms Used in Scanning-Probe Microscopy
• ISO 10934: Optical Microscopy - Vocabulary
• ISO 26824: Particle characterization - Vocabulary
• IEC Electropedia: International Electrotechnical Vocabulary, particularly for optical and photonic terms

Practical Value

By establishing a harmonized vocabulary for optical interface analysis in surface chemical analysis, ISO 18115-3:2022 enhances the clarity, reliability, and efficiency of scientific communication and data exchange. This benefits product development, process optimization, compliance, and innovation in both academic and industrial sectors. Adopting this standard ensures compliance with international best practices in surface analysis, optical measurement, and chemical characterization.