hexagonal symmetry 예문

• Hydrogenation of graphene on substrate affects only one side, preserving hexagonal symmetry.
• The resulting crystal structure has hexagonal symmetry when viewed along a principal axis . ]]
• Below is an example with dihedral hexagonal symmetry.
• The crystal structure is characterized by the oxygen atoms forming hexagonal symmetry with near tetrahedral bonding angles.
• Donnayite crystals usually display trigonal or hexagonal symmetry and belong to the point group 1 or 3m and the space group P1.
• By using 3-beam interference, arrays with hexagonal symmetry can be generated, while with 4 beams, arrays with rectangular symmetry or 3D photonic crystals are generated.
• Johannes Kepler hypothesized in his work " Strena seu de Nive Sexangula " ( A New Year's Gift of Hexagonal Snow ) ( 1611 ) that the hexagonal symmetry of snowflake crystals was due to a regular packing of spherical water particles.
• This type of material exhibits hexagonal symmetry ( though technically this ceases to be true for tensors of rank 6 and higher ), so the number of independent constants in the ( fourth-rank ) elasticity tensor are reduced to 5 ( from a total of 21 independent constants in the case of a fully anisotropic solid ).
• Sir Martin Rees, an astrophysicist at Cambridge University, said scientists were left with the question of whether fundamental physical laws would someday explain that strange mixture of ingredients, or whether the precise amounts were a sort of accident of how the universe came into being _ something like snowflakes, each of which has a hexagonal symmetry but carries a pattern that is otherwise unique.