A micro-electromechanical nozzle assembly includes a substrate that
defines an ink chamber and an ink ejection port in fluid communication
with the ink chamber on an ejection side of the substrate. A control
circuitry layer is positioned on an ink ingress side of the substrate. An
arcuate thermal actuator is fast with the control circuitry layer in a
cantilever manner to be interposed between an ink reservoir and the ink
chamber. The actuator is configured to straighten responsive to receipt
of an electrical signal from the control circuitry layer so that ink
within the ink chamber is ejected through the aperture.