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	Kontaktsvinkelgoniometri	Dynamisk mekanisk analys
Ämnesområde	Biomaterial	Biomaterial
Familj	Process / pipeline	Process / pipeline
Ursprungsår	1805	1960
Upphovsperson	Thomas Young	Ferry and Schwarzl
Typ	Wettability measurement	Rheological characterization
Ursprungskälla	Young, T. (1805). An essay on the cohesion of fluids. Philosophical Transactions of the Royal Society, 95, 65-87.	Menard, K. P. (2008). Dynamic mechanical analysis: a practical introduction (2nd ed.). CRC Press.
Alias	sessile drop method, contact angle measurement, wettability analysis	DMA, rheological analysis, viscoelastic testing
Närliggande	3	3
Sammanfattning	Contact angle goniometry is a technique for measuring the wettability of a solid surface by determining the angle at which a liquid droplet meets the surface. Rooted in Thomas Young's thermodynamic analysis from 1805, the method uses optical measurement of droplet profile to quantify surface energy and hydrophilicity. It is indispensable in biomaterials characterization, helping researchers assess whether a scaffold or implant surface will promote or inhibit cell adhesion, protein adsorption, and biointegration.	Dynamic mechanical analysis (DMA) measures the viscoelastic properties of materials—their elastic stiffness and viscous damping—by applying a sinusoidal stress or strain and measuring the phase lag and amplitude of the material's response. Developed from rheology principles in the 1960s and formalized by Ferry, Schwarzl, and others, DMA provides quantitative measures of how polymeric biomaterials respond to time-dependent and frequency-dependent mechanical stimuli. Key outputs include the storage modulus (elastic component), loss modulus (viscous component), and loss tangent (tan δ), which together characterize the material's mechanical behavior across temperature and frequency ranges.