Surface free energy (mJ/m²) is expressed as the energy required to expand a surface per unit area.
In the field of interface science, there are very familiar interfacial phenomena in our daily lives, such as "wetting," "adhesion," "surface tension," "dispersion," and "emulsion." Surface free energy is a term used when the surface tension is composed of several forces. The surface tension of solids is often referred to as surface free energy, in contrast to the surface tension of liquids. While surface tension (mN/m) is the force required to pull a line of unit length, surface free energy (mJ/m²) is expressed as the energy required to expand a unit area, and although the units are different, the values are equivalent. *For more details, please refer to the PDF document or feel free to contact us.*
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Our contact angle meters and surface tension meters have a wealth of delivery records and publications. We also provide equipment related to interfaces, such as friction meters, zeta potential meters, adhesive film peeling analysis devices, and LB film production devices, contributing multifacetedly to our customers' research, development, and quality control. ★ We accept commissioned measurements. Our commissioned measurements utilize high-performance equipment, and dedicated measurement personnel handle everything from measurement to reporting. We strive to provide reliable data that serves as evaluation criteria for material assessment. - Static/Dynamic/Contact Angle (wetting properties, liquid repellency, cleaning evaluation, surface free energy analysis) - Static/Dynamic Surface and Interfacial Tension (permeability, emulsification, solubility, wettability, foaming) - Lamella Length (foam stability, coating pickup, liquid drainage, wicking evaluation) - Powder Wettability (wettability of powders, wettability due to surface treatment and roughness of powders, wettability evaluation based on powder penetration speed) - Static/Dynamic Friction Wear Analysis (friction wear, lubricity, stickiness, slip properties) - Tensile Testing (adhesion, angle dependence, light peeling, high-speed peeling) - Zeta Potential (particle size distribution, dispersion stability, aggregation, sedimentation) - Anti-fogging Evaluation (degree of fogging, transparency, condensation)