need script to list folder permissions in folder tree and subfolder

Hi All, 

There is a parent folder that contains sub-folders. i am trying to pull out details on who has access to the parent folders including sub-folder. 

i used this powershell command "Get-Acl -path D:\Shared\FileShare\Volume2 | Format-List accesstostring" am getting only parent folder permission list. 

is there any script to have detail access-list and permission including sub-folder ?

Any help, suggestions, ideas would be appreciated.

Thank You

srini