1. Biosensors and Bioelectronics Centre, IFM, Linköping University, S-58183 Linköping, Sweden
2. Department of Applied Chemistry and Chemical
Engineering, University of Dhaka, Dhaka 1000, Bangladesh
3. Tekidag AB, UCS, Mjärdevi Science Park, Teknikringen 4A, SE 583 30 Linköping, Sweden