An encapsulated integrated circuit is provided that includes an integrated circuit (IC) die. A phonon device is fabricated on the IC die that is configured to emit or to receive phonons that have a range of ultrasonic frequencies. An encapsulation material encapsulates the IC die. A phononic bandgap structure is included within the encapsulation material that is configured to have a phononic bandgap with a frequency range that includes at least a portion of the range of ultrasonic frequencies. A phononic channel is located in the phononic bandgap structure between the phonon device and a surface of the encapsulated IC.

In one embodiment, a system for locating a tip of a catheter that has been inserted into a patient includes an implantable catheter having a distal tip, a pulsed light source that is co-located with the distal tip of the implantable catheter, the pulsed light source being configured to emit pulses of light into surrounding patient tissue, an optoacoustic sensor configured to be applied so a skin surface of the patient at a position proximate to the pulsed light source and to sense optoacoustic waves generated when the pulses of light are absorbed by the surrounding patient tissue, and an optoacoustic console configured to receive optoacoustic wave signals from the optoacoustic sensor and to display an indication of the optoacoustic wave signals to a medical professional to provide an indication of the location of the pulsed light source and, therefore, the distal tip of the implantable catheter.

A focus controlling component is configured to control a focus of a laser beam to have respective focal points surrounding an object. The laser beam induces respective plasmas at the respective focal points. The respective plasmas emit respective acoustic pressure waves that control movement of the object.

A mobile communications device that does not have a physical opening on the screen for audio is operable to transmit a signal to which a photoacoustic effect can be employed by interaction with water vapor in an ear of a user so as to generate audio in the ear or the immediate vicinity of the user's ear. Related methods, apparatuses, systems, techniques and articles are also described.

Disclosed is a system including a substrate having a first side and a second side and a layer of photoacoustic material disposed on the first side of the substrate. The layer of photoacoustic material is configured to generate a directional ultrasound wave in response to a laser beam impinging on the layer. A conduit may be coupled to the housing and have an opening adjacent to the layer of photoacoustic material; the directional ultrasound wave may be directed through fluid that is contained in the conduct to generate a liquid jet in a liquid.

A phonon parametric oscillator is provided. The phonon parametric oscillator comprises a laser for periodically emitting brief optical pulses (IL), an assembly for generating acoustic pulses (IA) and a medium for coupling the acoustic pulses to an object (O), the assembly for generating acoustic pulses comprising an entrance face, an exit face, a conversion medium for converting the brief optical pulses into acoustic pulses and a propagation medium for propagating said acoustic pulses, the entrance and exit faces being reflective to the acoustic pulses, the propagation medium having a defined thickness, the exit face making contact with the coupling medium. In the phonon parametric oscillator according to the invention, the round-trip time of an acoustic pulse due to reflection from the entrance and exit faces, is equal to the emission period (?) of the laser, so that the reflected acoustic pulse is in phase with the following acoustic pulse.

Peak specification unit 31 specifies, based on a plurality of photoacoustic-images according to detection signals of photoacoustic-waves detected in a plurality of postures, a photoacoustic-image with the strongest detection signal of a detected photoacoustic-wave among the plurality of photoacoustic-images in a peak search mode. Posture determination unit 32 determines whether or not the posture of the probe 11 at the time of detecting photoacoustic-waves of a generation source of the photoacoustic-image matches the posture of the probe 11 at the time of detecting photoacoustic-waves of a generation source of the photoacoustic-image specified by the peak specification unit in a normal mode. Display control unit 27 displays the photoacoustic image on a display screen, and in a case where the posture determination unit 32 determines that the postures match each other, displays a report indicating the postures matching each other on the display screen.

An optical pulse measuring method measuring an optical pulse generated from a pulse light source is provided. The method includes: splitting the optical pulse and then focusing them at a measuring point, so as to generate gas plasma by the autocorrelation of the split optical pulses; receiving the sound signal from the gas plasma and generate a plasma sound signal; and using the plasma sound signal to calculate the characteristics of the optical pulse. A measuring device is also provided.

An encapsulated integrated circuit is provided that includes an integrated circuit (IC) die. A phonon device is fabricated on the IC die that is configured to emit or to receive phonons that have a range of ultrasonic frequencies. An encapsulation material encapsulates the IC die. A phononic bandgap structure is included within the encapsulation material that is configured to have a phononic bandgap with a frequency range that includes at least a portion of the range of ultrasonic frequencies. A phononic channel is located in the phononic bandgap structure between the phonon device and a surface of the encapsulated IC.

Laser-induced ultrasonic wave apparatuses and methods of generating images using the same. The laser-induced ultrasonic wave apparatus includes a laser source which irradiates a laser beam to a target object and a thermoelastic material; a thermoelastic material which converts the laser beam to a first ultrasonic wave and irradiates the first ultrasonic wave to the target object; and a receiving unit which receives an echo acoustic wave of the first ultrasonic wave and receives a second ultrasonic wave generated by the target object due to the laser beam.