#$%^&*AU2017200356A120170202.pdf#####ABSTRACT The present invention provide micro devices for biological applications and methods of using them, wherein each micro device comprises an oater membrane and a property and has a size ranging from approximately 1 angstrom to no greater than approximately millimeters.1/6 -4Jv Fig. Fig / 3 12 12 NJ LIJ iA 147 Fio