🔩 材料科学

Stress-Strain CurveApply strain to five engineering materials and watch the specimen neck and fracture,… Dislocation & Crystal SlipApply shear stress to a crystal lattice and watch an edge dislocation glide along its slip… Alloy Phase Diagram — Binary EutecticCool a binary alloy through a eutectic phase diagram, apply the lever rule at any… Semiconductor Band Structure — Conduction, Valence & DopingChange temperature and doping to move the Fermi level through a silicon, germanium or GaAs… Crystal Dislocations — Edge Defects, Burgers Vector & Hall-PetchLoad a crystal to move an edge dislocation and inspect its Burgers vector and stress field,… Crystal DiffusionSimulate atomic diffusion in a crystal lattice via vacancy mechanism using Fick's 2nd law… Band StructureNewChange temperature and doping to see the Fermi level slide through a semiconductor band… SuperconductivityNewCool below the critical temperature and watch resistance vanish and magnetic flux get… Shape Memory AlloyLoad and heat a Nitinol wire to drive the martensite-austenite transformation, producing… Polymer ChainGrow a freely-jointed polymer as a random walk and measure how its radius of gyration scales… Liquid CrystalApply a field to a nematic layer and watch the director field snap over at the Freedericksz… Grain Growth — Metallic MicrostructureAnneal a Voronoi microstructure and watch big grains eat small ones, with Arrhenius kinetics… Dislocation Glide — Crystal Defects & PlasticityNewApply shear stress and watch an edge dislocation glide along its slip plane, enabling… Binary Alloy Phase Diagram — Eutectic & SolidificationNewDrag the cursor across a two-component alloy phase diagram to read liquidus, solidus and… Nucleation & Growth — Birth of a New PhaseNewWatch undercooling push cluster fluctuations past the critical nucleus radius, tipping them… Ostwald Ripening — Big Grains Eat Small OnesNewIn a two-phase mixture, large droplets grow at the expense of small ones to reduce total… Dendrite Growth — Snowflakes & SolidificationNewAs a melt solidifies, its flat interface goes unstable and branches into dendrites, with… Hydrogel Swelling MechanicsNewA cross-linked hydrogel network swells by absorbing water. Flory-Rehner theory balances… Crystal Twinning & Grain BoundariesNewA mirror plane relates two crystal grains at a twin boundary; the CSL Σ value sets how… Rubber Network ElasticityNewStretch a Neo-Hookean rubber network and compare its stress-stretch curve against… Ceramic Fracture MechanicsNewGrow a crack in a ceramic past the Griffith threshold K_IC and see how subcritical growth…