to solve the helfrich equation under the physical conditions of vesicles , a taylor series method is introduced , which offers a unified method to reproduce the exact solution including the famous axisymmetrical constant - curvature surfaces and the biconcave shape solution本文在简要介绍了helfrich的...
Red blood cell with a biconcave disc shape is to provide a large surface area to volume ratio to facilitate the diffusion of gases. (NOT to carry more oxygen. 红血球的双凹面圆盘形可以增加它的表面积(不是增加它所带的氧气),以利气体的扩散。
The Helfrich's shape equation of axisymmetric vesicles is studied. A sufficient condition on the physical parameters and some geometric properties are discovered for the biconcave shape.doi:10.48550/arXiv.physics/9908026Thomas Kwokkeung AuTom Yauheng Wan...
Sign up with one click: Facebook Twitter Google Share on Facebook biconcave Thesaurus Medical biconcave biconcave (left) and biconvex (right) lenses bi·con·cave (bī′kŏn-kāv′, bī-kŏn′kāv′) adj. Concave on both sides or surfaces:a biconcave lens. ...
Kolios' team's method works best with red blood cells because of their biconcave shape, which gives them the unique ability to absorb light better than platelets and white blood cells. FromScience Magazine The vertebrae are biconcave, and although the gills are lost in the adult, ossified gil...
Lens Shape Bi-Concave (Double Concave) Material UV FUSED SILICA Surface Quality 20-10 scratch-dig Surface Flatness λ/8 Surface Accuracy, Irregularity λ/8 Surface Accuracy, Power 1.5 λ Centration ≤3 arc min Chamfers 0-0.8 mm face width Chamfers Angle...
Ball lenses have the shape of a sphere. Similarly, there are rod lenses with a cylinder shape. Doublet lenses are made by bonding two lenses together, which consist of different optical materials. Most common are achromatic doublets (see below). There are also Fresnel lenses, which can be ...
forming a structure with a thin central region and thickened edges. This distinct shape—visually recognizable by its inward-curving faces—directly governs their unique optical behavior in diverging light rays. The defining characteristic of Double-Concave Lenses lies in their geometr...
We present that in order to have biconcave shape vesicle, there are necessary conditions on the parameters of the energy functional and there are implications on the geometric quantities of the vesicle. Furthermore, we also give a clear sufficient condition on the parameters to have the formation...
Mathematics - Analysis of PDEsWe study the conditions on the physical parameters in the Helfrich bending energy of lipid bilayer vesicles. Among embedded surfaces with a biconcave axisymmetric shape, the variation equation is analyzed in detail. This leads to simple conditions which guarantee the ...