Figure 1

An illustration for the 3D structures of a testing device. (a) A micro-thin-film thermocouple (TFTC) array is fabricated on the glass substrate. (b) Testing Zones are confined by a layer of SU-8 above the micro-TFTC array. (c) Cylindroid rooms are confined by a layer of PDMS above the Testing Zones. (d) Syringe tubes are mounted to the PDMS layer at the holes’ positions.