Delcom Non-Contact Surface Resistance Measurement: SiC, Bare Wafers, ITO, Metal Mesh and Silver Nanowires
Non-contact measurement protects surfaces and improves repeatability
Non-contact measurement protects surfaces and improves repeatability
Surface and sheet resistance measurements can be affected by the contact method, measurement position, surface condition, and operator. For high-value or delicate samples, probe contact may cause scratches or contamination and make results less consistent.
Delcom non-contact surface resistance measurement uses eddy current technology. It is suitable for silicon carbide (SiC), bare wafers, ITO, metal mesh, and silver nanowires. Typical applications include process monitoring, incoming inspection, batch comparison, and quality management.
Why consider non-contact measurement?
Surface resistance is an important indicator of material, process, and product quality in semiconductors, transparent conductive films, functional coatings, and advanced electronic materials. For sensitive or expensive samples, contact pressure, probe position, and operator technique can affect the measurement or damage the surface. Non-contact measurement helps reduce these risks and improve measurement consistency.
Common applications
- High-value materials: Measure SiC and bare wafers without probe contact that could affect the surface or sample usability.
- Repeatable quality checks: Support repeated measurements, batch comparisons, incoming inspection, and process monitoring with less variation from contact force and operator technique.
- Sensitive conductive surfaces: Measure ITO, metal mesh, and silver nanowire films where probe contact may affect the surface or results.
Non-contact measurement and four-point probes
Four-point probes are widely used, but their readings can be influenced by contact pressure, position, surface roughness, and operating technique. Non-contact measurement is worth evaluating when samples are delicate or valuable, or when avoiding contact and improving repeatability are priorities.
Contact Fulcrum Technology for guidance on Delcom products and applications.