Abstract: An array of micromachined ultrasonic transducers (MUTs). The array has first and second rows, the MUTs in the first row being equally spaced by a horizontal pitch in a horizontal direction, the MUTs in the second row being equally spaced by the horizontal pitch in the horizontal direction. The MUTs in the second row are shifted along the horizontal direction by a first horizontal distance relative to the MUTs in the first row and shifted along a vertical direction by a first vertical distance relative to the MUTs in the first row. The first horizontal distance is greater than zero and less than the horizontal pitch. The first vertical distance ranges from one tenth of a horizontal width of a MUT to a half of a vertical height of a MUT.

Abstract: Methods for improving the electromechanical coupling coefficient and bandwidth of micromachined ultrasonic transducers, or MUTs, are presented as well as methods of manufacture of the MUTs improved by the presented methods.

Abstract: Described are micromachined ultrasonic transducers (MUTs) with convex or concave electrodes, which have enhanced pressure amplitude and frequency response behavior when driven at fundamental and harmonic frequencies, as well as methods of making the same.

Abstract: Described are micromachined ultrasonic transducers (MUTs) with convex or concave electrodes, which have enhanced pressure amplitude and frequency response behavior when driven at fundamental and harmonic frequencies, as well as methods of making the same.

Abstract: A three-dimensional control system includes an input device, a computing device, and a tracking assembly. The input device can include an input sensor, an inertial measurement unit sensor, and an ultrasonic speaker. The tracking assembly can include a plurality of ultrasonic microphones and an inertial measurement unit disposed on or with the computing device. The plurality of ultrasonic microphones can include three microphones in a first plane and at least one other ultrasonic microphone disposed out of the first plane. The ultrasonic microphones can be configured to detect ultrasonic waves output by the speaker of the input device and the computing device can triangulate the position of the input device relative to the computing device in space.

Abstract: An input device, such as a mouse, can include a housing defining an exterior grip portion and an internal volume, a sensor assembly disposed in the internal volume, and an emitter electrically coupled to the sensor assembly. In response to the sensor assembly detecting a first touch input on the housing, the emitter sends a first signal including information regarding an angular position of the grip portion. In response to the sensor assembly detecting a second touch input on the housing, the emitter sends a second signal including information regarding a direction of a force exerted on the housing from the second touch input.

Abstract: A computer input system includes a mouse including a housing having an interior surface defining an internal volume and a sensor assembly disposed in the internal volume. A processor is electrically coupled to the sensor assembly and a memory component having electronic instructions stored thereon that, when executed by the processor, causes the processor to determine an orientation of the mouse relative to a hand based on a touch input from the hand detected by the sensor assembly. The mouse can also have a circular array of touch sensors or lights that detect hand position and provide orientation information to the user.

Abstract: A memory device includes a memory array of memory cells and control logic operatively coupled with the memory array. The control logic is to perform operations including: initiating a true erase sub-operation by causing an erase pulse to be applied to one or more sub-blocks of the memory array; tracking, a number of suspend commands received from a processing device during time periods that a memory line of the memory array is caused to ramp towards an erase voltage of the erase pulse; causing, in response to receiving each suspend command, the true erase sub-operation to be suspended to enable performing a non-erase memory operation; and in response to the number of suspend commands satisfying a threshold criterion, alerting the processing device to terminate sending suspend commands until after completion of the true erase sub-operation.

Abstract: An input device can include a housing defining an internal volume and a lower portion, the lower portion defining an aperture, an input sensor disposed in the internal volume, and a haptic assembly disposed in the internal volume. The haptic assembly can include an actuator and a foot coupled to the actuator and aligned with the aperture. The actuator can be configured to selectively extend the foot through the aperture to vary a sliding resistance of the input device on a support surface.

Abstract: A micromachined ultrasonic transducer (MUT) which comprises a first piezoelectric layer and a second piezoelectric layer. The first piezoelectric layer is disposed between a first electrode and a second electrode. The second piezoelectric layer is disposed between the second electrode and a third electrode. At least the first electrode has first and second ends along a first axis, one or more of which is defined by a radius of curvature R. A second axis normal to the first passes through a midpoint of the first axis. A half-width of the first electrode is defined by a length L measured from the midpoint, in the direction of the second axis, to an outer perimeter of the first electrode. A total width of the first electrode at its narrowest point along the first axis is at most 2L such that the first electrode has a concave shape. R/L is greater than 1.

Abstract: Provided herein are micromachined ultrasonic transducers as well as imaging devices and assemblies comprising micromachined ultrasonic transducers (MUTs). The MUTs described herein have a plurality of membranes so as to improve acoustic power at higher frequencies.

Abstract: A memory device includes a memory array of memory cells and control logic operatively coupled with the memory array. The control logic is to perform operations including: initiating a true erase sub-operation by causing an erase pulse to be applied to one or more sub-blocks of the memory array; tracking, a number of suspend commands received from a processing device during time periods that a memory line of the memory array is caused to ramp towards an erase voltage of the erase pulse; causing, in response to receiving each suspend command, the true erase sub-operation to be suspended to enable performing a non-erase memory operation; and in response to the number of suspend commands satisfying a threshold criterion, alerting the processing device to terminate sending suspend commands until after completion of the true erase sub-operation.

Abstract: A system for performing near infrared spectroscopy (NIRS) monitors tissue oxygenation and/or hemodynamics. The system comprises a sensor coupled to a controller and/or processing device. The sensor comprises a light source which is operable to emit light of various distinct wavelengths and a detector which is operable to collect corresponding backscattered light.

Abstract: A spinal facet fusion device is provided. The device includes a working sleeve having a first surface with a first port and a second port extending there through. The first port has a first perimeter and the second port having a second perimeter, wherein the first port is larger than the second port. A guide wire sleeve having a body with a proximal end and a distal end and a first outer perimeter is provided. The first outer perimeter is sized and shaped to be slidingly disposed within the second port, the guide wire sleeve having a channel extending longitudinally from the proximal end through the distal end, the body further having a stop feature on the distal end. An implementing device having a second outer perimeter is sized to be slidingly received within the first perimeter.

Abstract: A spinal facet fusion device is provided. The device includes a working sleeve having a first surface with a first port and a second port extending there through. The first port has a first perimeter and the second port having a second perimeter, wherein the first port is larger than the second port. A guide wire sleeve having a body with a proximal end and a distal end and a first outer perimeter is provided. The first outer perimeter is sized and shaped to be slidingly disposed within the second port, the guide wire sleeve having a channel extending longitudinally from the proximal end through the distal end, the body further having a stop feature on the distal end. An implementing device having a second outer perimeter is sized to be slidingly received within the first perimeter.