Table 1.
Key physical parameters altered by stretching of particles. A prolate ellipsoid (a > b = c) with axes labeled and key points numbered. AR = Aspect ratio. Rel. SA = Surface area of ellipsoidal particles, relative to sphere. Rel. Density = Protein density on surface of aAPC with assumed equivalent total protein content relative to spheres. Ra, Rb, Rc = Radius of curvature, R, for the tip (point 1) of the ellipsoid (Ra), and for the flat face of the prolate spheroid (point 2) in either the ba plane (Rb) and the ca plane (Rc). For equations used and description of derivations, see Supplemental calculation.
| Stretch | AR | Rel. SA | Rel. Density | Ra | Rb | Rc |
|---|---|---|---|---|---|---|
| Sphere | 1 | 1 | 1 | 1 | 1 | 1 |
| 1.5 | 1.84 | 1.06 | 0.94 | 0.44 | 2.8 | 0.82 |
| 2 | 2.83 | 1.16 | 0.86 | 0.25 | 5.7 | 0.71 |
| 2.5 | 3.95 | 1.27 | 0.78 | 0.16 | 9.9 | 0.63 |
| 3 | 5.20 | 1.38 | 0.72 | 0.11 | 16 | 0.58 |
| 3.5 | 6.55 | 1.48 | 0.67 | 0.08 | 23 | 0.53 |