Abstract: Systems and techniques are provided for an ultrasonic transducer. A substrate may include a main cavity, a secondary cavity, and a channel. The main cavity may have a greater depth than the secondary cavity. The secondary cavity may have a greater depth than channel. A first step may be formed where the main cavity and the secondary cavity overlap. A second step may be formed where the secondary cavity and the main cavity overlap. An electromechanically active device may be attached to the substrate at the first step and the second step such that a free end of the electromechanically active device is suspended over the main cavity. A membrane section may be bonded to the substrate such that the membrane covers the main cavity and the secondary cavity and is bonded to the free end of the electromechanically active.

Abstract: Systems and techniques are provided for an ultrasonic transducer. A substrate may include a main cavity, a secondary cavity, and a channel. The main cavity may have a greater depth than the secondary cavity. The secondary cavity may have a greater depth than channel. A first step may be formed where the main cavity and the secondary cavity overlap. A second step may be formed where the secondary cavity and the main cavity overlap. An electromechanically active device may be attached to the substrate at the first step and the second step such that a free end of the electromechanically active device is suspended over the main cavity. A membrane section may be bonded to the substrate such that the membrane covers the main cavity and the secondary cavity and is bonded to the free end of the electromechanically active.

Abstract: A gyroscope includes a vibratory structure, and a control mechanism including at least a first electrode, and at least a second electrode adjacent the first electrode, wherein the vibratory structure is separated from the control mechanism by a gap, wherein to drive a vibration in the vibratory structure, the control mechanism is configured to apply an alternating electrical voltage between the first electrode and the second electrode, and wherein to sense motion in the vibratory structure, the control mechanism is configured to apply a direct current voltage bias between the first electrode and the second electrode.

Abstract: A tip for a phacoemulsification handpiece, including a tubular structure having an elongate portion with generally parallel sides and a flared end portion extending outwardly from the elongate portion and presenting a mouth that is larger in diameter than a lumen diameter of the elongate portion. The tip may include a plurality of internally extending structures coupled to an interior of the tubular structure. A method of surgically removing a crystalline lens of an eye, including evaluating the crystalline lens to determine the level of nuclear sclerosis, sectioning at least a central portion of the crystalline lens into a plurality of lens fragments by application of femtosecond laser energy and aspirating the lens fragments from the eye using a phaco-aspiration tip coupled to a source of suction. The method may include application of pulsed vacuum to aspirate lens fragments.

Abstract: Systems and techniques are provided for an ultrasonic transducer. A substrate may include a main cavity, a secondary cavity, and a channel. The main cavity may have a greater depth than the secondary cavity. The secondary cavity may have a greater depth than channel. A first step may be formed where the main cavity and the secondary cavity overlap. A second step may be formed where the secondary cavity and the main cavity overlap. An electromechanically active device may be attached to the substrate at the first step and the second step such that a free end of the electromechanically active device is suspended over the main cavity. A membrane section may be bonded to the substrate such that the membrane covers the main cavity and the secondary cavity and is bonded to the free end of the electromechanically active.