[1] [1] DAN A, AERY S, ZHANG S N, et al. Protein microgel-stabilized Pickering liquid crystal emulsions undergo analyte-triggered configurational transition ［J］. Langmuir, 2020, 36(34): 10091-10102.

[2] [2] ORTIZ B J, BOURSIER M E, BARRETT K L, et al. Liquid crystal emulsions that intercept and report on bacterial quorum sensing ［J］. ACS Applied Materials & Interfaces, 2020, 12(26): 29056-29065.

[3] [3] COATES D. Polymer-dispersed liquid crystals ［J］. Journal of Materials Chemistry, 1995, 5(12): 2063-2067.

[4] [4] LAVRENTOVICH O D. Topological defects in dispersed words and worlds around liquid crystals, or liquid crystal drops ［J］. Liquid Crystals, 1998, 24(1): 117-126.

[5] [5] KLEMAN M, LAVRENTOVICH O D. Soft Matter Physics: An Introduction ［M］. Berlin: Springer, 2003: 20-35.

[6] [6] KRALJ S, VIRGA E G. Universal fine structure of nematic hedgehogs ［J］. Journal of Physics A: Mathematical and General, 2001, 34(4): 829-838.

[7] [7] GARTLAND JR E C, MKADDEM S. Instability of radial hedgehog configurations in nematic liquid crystals under Landau-de Gennes free-energy models ［J］. Physical Review E, 1999, 59(1): 563-567.

[8] [8] AN D, WANG W, ZHANG P W. On equilibrium configurations of nematic liquid crystals droplet with anisotropic elastic energy ［J］. Research in the Mathematical Sciences, 2017, 4(1): 7.

[9] [9] TOMAR V, HERNNDEZ S I, ABBOTT N L, et al. Morphological transitions in liquid crystal nanodroplets ［J］. Soft Matter, 2012, 8(33): 8679-8689.

[10] [10] SONG P, GAO Y Z, WANG F F, et al. Studies on the electro-optical and the light-scattering properties of PDLC films with the size gradient of the LC droplets ［J］. Liquid Crystals, 2015, 42(3): 390-396.

[11] [11] GENG Y, JANG J H, NOH K G, et al. Through the spherical looking-glass: asymmetry enables multicolored internal reflection in cholesteric liquid crystal shells ［J］. Advanced Optical Materials, 2018, 6(1): 1700923.

[12] [12] SCHOPOHL N, SLUCKIN T J.Hedgehog structure in nematic and magnetic systems ［J］. Journal de Physique, 1988, 49(7): 1097-1101.

[13] [13] PENZENSTADLER E, TREBIN H R. Fine structure of point defects and soliton decay in nematic liquid crystals ［J］. Journal de Physique, 1989, 50(9): 1027-1040.

[14] [14] SONNET A, KILIAN A, HESS S. Alignment tensor versus director: description of defects in nematic liquid crystals ［J］.Physical Review E, 1995, 52(1): 718-722.

[15] [15] GUPTA J K, SIVAKUMAR S, CARUSO F, et al. Size-dependent ordering of liquid crystals observed in polymeric capsules with micrometer and smaller diameters ［J］. Angewandte Chemie International Edition, 2009, 48(9): 1652-1655.

[16] [16] SIVAKUMAR S, GUPTA J K, ABBOTT N L,et al. Monodisperse emulsions through templating polyelectrolyte multilayer capsules ［J］. Chemistry of Materials, 2008, 20(6): 2063-2065.

[17] [17] BACCHIOCCHI C, MIGLIOLI I, ARCIONI A, et al. Order and dynamics inside H-PDLC nanodroplets: an ESR spin probe study ［J］. Journal of Physical Chemistry B, 2009, 113(16): 5391-5402.

[18] [18] PRISHCHEPA O O, SHABANOV A V, ZYRYANOV V Y. Director configurations in nematic droplets with inhomogeneous boundary conditions ［J］. Physical Review E, 2005, 72(3): 031712.

[19] [19] DAVIDSON Z S, KANG L, JEONG J, et al. Chiral structures and defects of lyotropic chromonic liquid crystals induced by saddle-splay elasticity ［J］. Physical Review E, 2015, 91(5): 050501(R).

[20] [20] UMER S, KRALJ S. Influence of K24 on the structure of nematic liquid crystal droplets ［J］. Liquid Crystals, 1992, 12(4): 613-624.

[21] [21] MKADDEM S, GARTLAND JR E C. Fine structure of defects in radial nematic droplets ［J］. Physical Review E, 2000, 62(5): 6694-6705.

[22] [22] GARTLAND JR E C. Scalings and limits of landau-de gennes models for liquid crystals: a comment on some recent analytical papers ［J］. Mathematical Modelling and Analysis, 2017, 23(3): 414-432.

[23] [23] ZHOU X,ZHANG Z D, ZHANG Q, et al. Order reconstruction in a nanoconfined nematic liquid crystal between two coaxial cylinders ［J］. Materials, 2015, 8(12): 8072-8086.

[24] [24] ERICKSEN J L. Inequalities in liquid crystal theory ［J］. Physics of Fluids, 1966, 9(6): 1205-1207.

[25] [25] BERIS A N, EDWARDS B J. Thermodynamics of Flowing Systems: With Internal Microstructure ［M］. Oxford: Oxford University Press, 1994.

[26] [26] KRALJ S, ROSSO R, VIRGA E G. Finite-size effects on order reconstruction around nematic defects ［J］. Physical Review E, 2010, 81(2): 021702.