In precision manufacturing and materials science research, the precise characterization of surface morphology is directly related to product performance and process yield.3D profilometerAs a non-contact optical measurement device, it is becoming an indispensable quality control tool in fields such as semiconductors, display technology, and new materials. This article will analyze the measurement range and applicable workpieces of the 3D profilometer, helping you to fully understand the core capabilities of this precision instrument.
A 3D profilometer is a high-precision measurement device that uses the principle of optical interference to obtain the three-dimensional morphology of a sample surface. Taking KLA Profilm3D, represented by Unicon Technology Co., Ltd. (Yiying Technology), as an example, it adopts two technologies: vertical interference scanning (WLI) and phase interference (PSI), which can achieve cross scale surface morphology measurement from sub nanometer to millimeter level. Compared with traditional contact profilometers, 3D profilometers do not require contact with the sample surface, making them particularly suitable for soft materials, brittle materials, or precision workpieces that have already been processed.
Based on different measurement modes, the vertical measurement range of the 3D profilometer can cover a wide range of scales:
Phase interference (PSI) mode: suitable for smooth surfaces, with a vertical measurement range of 0 to 3 microns and RMS repeatability of up to 0.1 nanometers, suitable for measuring the microstructure of ultra smooth surfaces.
Vertical interference scanning (WLI) mode: suitable for rough surfaces or step structures, with a measurement range of up to 50 nanometers to 10 millimeters, capable of balancing micro texture and macro contour.
This wide range design allows the same device to measure both the surface roughness of optical lenses and the deep groove structure of MEMS devices.
The single measurement field of view of a 3D profilometer is related to the objective lens magnification. For example, with a 10x objective lens, the single field of view can reach 2 millimeters. For workpieces that require a larger measurement range, the equipment supports automatic splicing function, which can fuse data from multiple measurement areas into a complete 3D shape map, meeting the global analysis needs of large-sized samples.
The step height is a key parameter in fields such as semiconductor technology and thin film deposition. KLA Profilm3D performs stably in measuring step height, with an accuracy of 0.7% and a precision of 0.1%. It can reliably complete measurement tasks from a few nanometers to millimeter steps.
In semiconductor manufacturing, a 3D profilometer can be used to measure the step height of the passivation layer on the wafer surface, the morphology of the photoresist pattern, the depth of the etching groove, and the surface flatness after CMP polishing. For the field of display technology, both the organic layer thickness of OLED devices and the multi-layer film structure on TFT substrates can obtain accurate 3D data through a 3D profilometer.
Optical lenses, precision molds, medical implants, and other workpieces have strict requirements for surface quality. The 3D profilometer can perform non-destructive testing on the surface roughness, curvature profile, and fine scratches of these components, helping the manufacturer control the processing quality.
From hard coatings to soft polymer films, the 3D profilometer, with its non-contact measurement advantage, can accurately obtain the 3D morphology of material surfaces. For example, in research on new energy battery separators, biomedical coatings, aerospace composite materials, etc., it is widely used to evaluate surface uniformity and defect distribution.
For wafers with a diameter of up to 300 millimeters or irregularly sized samples, the automatic XY sample stage and splicing measurement function equipped with the 3D profilometer can achieve full coverage, ensuring that every critical area is effectively detected.
Taking KLA Profilm3D as an example, the 3D profilometer embodies the following characteristics in design and performance:
Non contact measurement: avoids damaging sensitive materials and is suitable for fragile workpieces such as soft polymers and biological samples.
High measurement efficiency: Complete a single measurement within seconds, and the software automatically outputs parameters such as roughness, step height, and waviness, in compliance with international standards such as ISO 25178.
Flexible sample adaptation: The sample reflectivity range is 0.05% to 100%, covering almost all common material surfaces.
Easy to operate: Equipped with intuitive measurement software, even complex measurement tasks can be quickly completed.
When selecting, users can pay attention to the following points:
Measurement range: Select the matching WLI or PSI mode based on the maximum step height and surface roughness range of the sample.
Accuracy and repeatability: For applications that require strict accuracy, attention should be paid to the repeatability indicators of the equipment at specific ranges.
Sample size: Confirm whether the sample stage size and XY movement range meet the maximum sample requirements.
Automation level: If batch measurement is required, priority should be given to models with automatic sample tables and splicing functions.
Younikon Technology Co., Ltd. (Yiying Technology) provides free sample testing services. Users can send actual workpieces to the laboratory before purchasing to verify equipment compatibility.
The 3D profilometer has become an indispensable detection tool in precision manufacturing and material research due to its wide measurement range, diverse sample adaptability, and non-contact non-destructive measurement characteristics. From nanoscale thin films to millimeter scale structures, from semiconductor wafers to shaped precision components, 3D profilometers can provide reliable 3D morphology data, helping users optimize processes and improve yield.
About Us: Younikon Technology Co., Ltd. (Yiying Technology) has been focusing on precision thin film measurement and laboratory environment optimization since its establishment, and is the general agent of Filmetrics film thickness gauge in China. We are committed to providing professional products and attentive services to safeguard your precision instruments. For more product information or to schedule free testing, please visit our official website or call our service hotline.
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