A capacitive ultrasonic micromachining transducer (cMUT) comprising a lower electrode (12). In addition, the cMUT comprises a diaphragm (16) disposed in the immediate vicinity of the lower electrode (12) so that an interval having a first gap width is formed between the diaphragm (16) and the lower electrode ( 12). Alternatively, the cMUT has at least one member formed in the gap, while the at least one member is adapted to provide a second gap width between the diaphragm (16) and the lower electrode (12). .
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