Datepicker date format

I am trying to format the date using format() method from Datepicker form component but did not worked.

my code:

DatePicker::make('due_date')
  ->required()
  ->displayFormat('d/m/Y')
  ->format('d/m/Y')

DatePicker::make('due_date')
  ->required()
  ->displayFormat('d/m/Y')
  ->format('d/m/Y')

DatePicker::make('due_date')
  ->required()
  ->displayFormat('d/m/Y')
  ->format('d/m/Y')

DatePicker::make('due_date')
  ->required()
  ->displayFormat('d/m/Y')
  ->format('d/m/Y')