Embodiments of the invention include analyte-responsive compositions and electrochemical analyte sensors having a sensing layer that includes an analyte-responsive enzyme and a cationic polymer. A bridged steering wire sleeve element is provided for the tip assembly. The resulting gasvapor stream is then used for chemical vapor deposition, in a separate chemical vapor deposition chamber. The guiding step further slides the workpiece toward the edge so that the workpiece is flipped at least partially in place. In a light-emitting time period, three light-emitting switches are conducted to connect the driving transistor to the storage capacitor, the first voltage end and the OLED.