In a vertical topology light emitting device, an adhesion layer or adhesion structure is provided between one of the electrodes and the metal contact pad associated with that electrode. An embodiment of the system comprises a plurality of memory blocks; a plurality of repeaters; and a line that couples the memory blocks with the repeaters such that the repeaters can read from the memory blocks. The label and the separable paper of the label paper can be separated from each other by timely shifting the position of the change-over stopper and then respectively guided to a label guiding outlet and a separable-paper guiding outlet. For example, separating accesses to different rows of the same bank by at least a predetermined number of clocks can effectively hide the overhead involved in prechargingactivating the rows. The superconducting coil is mounted in a coil support. A process for detecting the presence of a mismatch in an otherwise complementary pair of oligonucleotides is disclosed using an enzyme-based technique which shows the presence of a mismatch by failing to form a ligated single stranded DNA circle that can optionally be amplified using standard methods of rolling circle amplification.