Ink jet printhead with amorphous ceramic chamber

A nozzle arrangement, for use in an integrated circuit device, the nozzle arrangement comprising:

• a wafer substrate;
• a nozzle chamber wall disposed on the wafer substrate;
• a roof wall, whereby the nozzle chamber wall and the roof wall define a nozzle chamber, the roof wall forming an ejection port that is in fluid communication with the nozzle chamber;
• an inlet channel, the inlet channel extending through the wafer substrate to the nozzle chamber;
• a thermal actuator having a suspended actuating arm that extends through an opening in the nozzle chamber wall which is spaced from the wafer substrate into the nozzle chamber for ejection of fluid from the ejection port, the actuating arm being suspended within the opening in the nozzle chamber wall so that the actuating arm is spaced from both the wafer substrate and the nozzle chamber wall within the opening;
• and
• a sealing structure defined within said opening of the nozzle chamber wall, the sealing structure, nozzle chamber wall and roof wall being complementarily configured so as to form fluidic seals therebetween within said opening.