Catalyst films for methanol combustion, which could be used as micro heat source to provide energy for micro-nano-scale devices, were fabricated with an inkjet printing method. The inkjet printing was used to prepare catalyst films by optimizing inkjet-printed parameters (voltage: 65-70V; pulse width: 20-30 mu s; ink viscosity: near 1 mPa s) and depositing uniform morphologies (substrate temperature: 80 degrees C; water/ethylene glycol (W/EG): 95:5, v/v). The performances of micro catalytic heat source were evaluated by an infrared thermography (IR) camera. The temperature response reached 95% of the steady state temperature in about 150s, the temperature difference reached 100 C on the catalyst surface, and the temperature of catalytic combustion was controlled by adjusting the methanol/air (10% v/v) flow rate. (C) 2014 Elsevier B.V. All rights reserved.