xxx
Array
(
    [0] => Array
        (
            [id] => 847
            [topology] => 3,4<sup>2</sup>T243
            [link_rcsr] => 
            [in_col] => 3
            [transitivity] => [3983]
            [space_group] => P4/mcc
            [pearson] => tP48
            [cn] => 3, 4 (1:2)
            [Year] => 2016
            [cn_sort] => 003-004-001-002-
            [topology_str] => 3,4<sup>2</sup>T243
            [caid] => 195
            [nn] => 0
            [name] => 
            [pressure] => 
            [density] => 2.488
            [e_gap] => 
            [energy] => 0.378
            [bulk_mod] => 290.8
            [shear_mod] => 163.2
            [vicker_hard] => 19.7
            [ref_file] => 
            [publ_year] => 
            [ref] => 
        )

    [1] => Array
        (
            [id] => 848
            [topology] => 3,4<sup>2</sup>T243
            [link_rcsr] => 
            [in_col] => 3
            [transitivity] => [3983]
            [space_group] => P4/mcc
            [pearson] => tP48
            [cn] => 3, 4 (1:2)
            [Year] => 2016
            [cn_sort] => 003-004-001-002-
            [topology_str] => 3,4<sup>2</sup>T243
            [caid] => 195
            [nn] => 1
            [name] => 4080-carbon
            [pressure] => 
            [density] => 2.471
            [e_gap] => Semimetal
            [energy] => 
            [bulk_mod] => 292
            [shear_mod] => 228
            [vicker_hard] => 33
            [ref_file] => /References/2016_AIP_advances_6_065225
            [publ_year] => 2016
            [ref] => 
        )

)
xxx