Application Notes
Surface Observation of Various Fibers for Fabrics/ 3D shape observation of a micro area using a laser microscope
Application
Fabrics used for clothing are broadly categorized into natural fibers (cotton, linen, wool, cashmere) and chemical fibers (acrylic, polyester). The fiber’s surface condition affect its absorbability, hygroscopicity, heat retention, dye-affinity, and texture. Managing the surface profile of these fibers down to the micron level becomes significant when it comes to enhancing the performance and quality of the fibers.
The surface profile of a fiber is so minute that it is usually observed using an electron microscope. However, electron microscopes require time-consuming sample preparation steps, and they are not very good for quantitative evaluations, such as surface roughness. Because the fibers are very delicate, manufacturers require a method for evaluating the fiber’s quality with minimal sample preparation so that the fibers are not damaged.
The Olympus solution
Olympus' LEXT 3D scanning laser microscope enables users to make three-dimensional observations and roughness measurements of the surface of a fiber. The LEXT features dedicated objective lenses with high numerical apertures and an optical system that obtains maximum performance from the 405 nm laser so it can clearly capture the profile of a curved fiber surface without causing damage.
Human hair
Objective lens 50X
Wool
Objective lens 50X
Cashmere
Objective lens 50X
Polyester
Objective lens 50X
Acrylic
Objective lens 50X
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*Based on Evident’s internal research as of October 2025. The guaranteed accuracy and repeatability apply only if the device has been calibrated according to the manufacturer’s specifications and is in defect free condition. Calibration must be performed by an Evident technician or an Evident-authorized specialist.
LEXT OLS5100
The LEXT™ OLS5100 laser scanning microscope combines exceptional accuracy and optical performance with smart tools that make the system easy to use. The tasks of precisely measuring shape and surface roughness at the submicron level are fast and efficient, simplifying your workflow and delivering high-quality data you can trust.