Анизотропные жидкости. Биологические структуры. Петрова Г.П. - 55 стр.

     Jbk  G_fZlbq_kdbc djbklZee k ieZgZjghc hjb_glZpb_c \ fZ]gblghf ihe_

       >ey kemqZy            sp la y- ^_nhjfZpbb       ihi_j_qguc ba]b[ bf__f
                 12
        π  k|| 
Hc =            
        a  ∆χ 
                       ]^_ Z — lhesbgZ kehy `b^dh]h djbklZeeZ
    :gZeh]bqgZy kblmZpby gZ[ex^Z_lky b ijb gZeh`_gbb we_dljb
q_kdh]h ihey lhevdh \ wlhf kemqZ_ mqblu\Z_lky ^bwe_dljbq_kdZy
Zgbahljhiby ∆ε = ε|| − ε ⊥ .
    >ey ∆ε > 0 wg_j]_lbq_kdb \u]h^gZ hjb_glZpby ^ebgguo hk_c
fhe_dme ih ihex ^ey ∆ε < 0 — i_ji_g^bdmeyjgh ihex
                                                 12
                                       π  4π k 
    Ihjh]h\Zy gZijy`_gghklv ihey Ec =    ijb wlhf djb
                                                        a  ∆ε 
                                              12
                                        4π k 
lbq_kdh_ gZijy`_gb_                b g_ aZ\bkbl hl lhesbgu kehy
                                Vc = π       
                                        ∆ε 
djbklZeeZ
    We_dljbq_kdZy ^ebgZ dh]_j_glghklb
                                                         12
                                             1  4π k 
                                         ξE =               .               (2 9 )
                                             E  ∆ε 
>ey ∆ε ≈ 0,1 Vc ≈ 2 <
    ?keb ijbjZ\gylv ξ H = ξ E kjZ\gblv ^_ckl\by we_dljbq_kdh]h b
                                                                  12
fZ]gblgh]h ihe_c lh fh`gh aZibkZlv E =  4π∆χ  H .
                                                  
                                          ∆ε 
                                
    JZkq_l ihdZau\Z_l qlh ihe_ H ≈ 1 wjkl_^ jZ\ghkbevgh                    ih \ha
^_ckl\bx gZijy`_gghklb ihey ≈ 1 < kf .
    >ey ohe_kl_jbq_kdhc kibjZeb ijb \ha^_ckl\bb + - ihey                   gZ[ex
^Z_lky \hagbdgh\_gb_ lZd gZau\Z_fuo 180° - guo kl_ghd                  

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