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dart - how can we use superscript and subscript text in flutter Text or RichText

i want to show a superscript text but not found any example or can anyone help me with this.

I have tried Text and RichText also, but not found any method or fields.

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You need to use Unicode. Here is the Unicode got from this answer:

unicode_map = {
         #           superscript     subscript
        '0'        : ('u2070',   'u2080'      ),
        '1'        : ('u00B9',   'u2081'      ),
        '2'        : ('u00B2',   'u2082'      ),
        '3'        : ('u00B3',   'u2083'      ),
        '4'        : ('u2074',   'u2084'      ),
        '5'        : ('u2075',   'u2085'      ),
        '6'        : ('u2076',   'u2086'      ),
        '7'        : ('u2077',   'u2087'      ),
        '8'        : ('u2078',   'u2088'      ),
        '9'        : ('u2079',   'u2089'      ),
        'a'        : ('u1d43',   'u2090'      ),
        'b'        : ('u1d47',   '?'           ),
        'c'        : ('u1d9c',   '?'           ),
        'd'        : ('u1d48',   '?'           ),
        'e'        : ('u1d49',   'u2091'      ),
        'f'        : ('u1da0',   '?'           ),
        'g'        : ('u1d4d',   '?'           ),
        'h'        : ('u02b0',   'u2095'      ),
        'i'        : ('u2071',   'u1d62'      ),
        'j'        : ('u02b2',   'u2c7c'      ),
        'k'        : ('u1d4f',   'u2096'      ),
        'l'        : ('u02e1',   'u2097'      ),
        'm'        : ('u1d50',   'u2098'      ),
        'n'        : ('u207f',   'u2099'      ),
        'o'        : ('u1d52',   'u2092'      ),
        'p'        : ('u1d56',   'u209a'      ),
        'q'        : ('?',        '?'           ),
        'r'        : ('u02b3',   'u1d63'      ),
        's'        : ('u02e2',   'u209b'      ),
        't'        : ('u1d57',   'u209c'      ),
        'u'        : ('u1d58',   'u1d64'      ),
        'v'        : ('u1d5b',   'u1d65'      ),
        'w'        : ('u02b7',   '?'           ),
        'x'        : ('u02e3',   'u2093'      ),
        'y'        : ('u02b8',   '?'           ),
        'z'        : ('?',        '?'           ),
        'A'        : ('u1d2c',   '?'           ),
        'B'        : ('u1d2e',   '?'           ),
        'C'        : ('?',        '?'           ),
        'D'        : ('u1d30',   '?'           ),
        'E'        : ('u1d31',   '?'           ),
        'F'        : ('?',        '?'           ),
        'G'        : ('u1d33',   '?'           ),
        'H'        : ('u1d34',   '?'           ),
        'I'        : ('u1d35',   '?'           ),
        'J'        : ('u1d36',   '?'           ),
        'K'        : ('u1d37',   '?'           ),
        'L'        : ('u1d38',   '?'           ),
        'M'        : ('u1d39',   '?'           ),
        'N'        : ('u1d3a',   '?'           ),
        'O'        : ('u1d3c',   '?'           ),
        'P'        : ('u1d3e',   '?'           ),
        'Q'        : ('?',        '?'           ),
        'R'        : ('u1d3f',   '?'           ),
        'S'        : ('?',        '?'           ),
        'T'        : ('u1d40',   '?'           ),
        'U'        : ('u1d41',   '?'           ),
        'V'        : ('u2c7d',   '?'           ),
        'W'        : ('u1d42',   '?'           ),
        'X'        : ('?',        '?'           ),
        'Y'        : ('?',        '?'           ),
        'Z'        : ('?',        '?'           ),         
        '+'        : ('u207A',   'u208A'      ),
        '-'        : ('u207B',   'u208B'      ),
        '='        : ('u207C',   'u208C'      ),
        '('        : ('u207D',   'u208D'      ),
        ')'        : ('u207E',   'u208E'      ),        
        ':alpha'   : ('u1d45',   '?'           ), 
        ':beta'    : ('u1d5d',   'u1d66'      ), 
        ':gamma'   : ('u1d5e',   'u1d67'      ), 
        ':delta'   : ('u1d5f',   '?'           ), 
        ':epsilon' : ('u1d4b',   '?'           ), 
        ':theta'   : ('u1dbf',   '?'           ),
        ':iota'    : ('u1da5',   '?'           ),
        ':pho'     : ('?',        'u1d68'      ),
        ':phi'     : ('u1db2',   '?'           ),
        ':psi'     : ('u1d60',   'u1d69'      ),
        ':chi'     : ('u1d61',   'u1d6a'      ),
        ':coffee'  : ('u2615',   'u2615'      )
    }

And for cut-and-paste purposes (from here):

? 1 2 3 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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