A haptic system is described. The haptic system includes a linear resonant actuator (LRA), a receiver, and a transmitter. The LRA has a characteristic frequency and provides a vibration in response to an input signal. The receiver is configured to sense received vibration from the LRA. The transmitter is configured to provide the input signal to the LRA. The receiver is coupled with the transmitter and provides vibrational feedback based on the received vibration. The input signal incorporates the vibrational feedback.

A haptic system is described. The haptic system includes a plurality of actuators, a plurality of receivers and at least one transmitter. Each of the actuators is configured to provide a vibration in response to an input signal. The receivers are configured to sense received vibrations from the actuators and to provide vibrational feedback based on the received vibrations. The transmitter(s) are configured to provide the input signal to each of the actuators. The receivers are coupled with the transmitter(s) and provide the vibrational feedback for the transmitter(s). The vibrational feedback indicates a phase difference between vibrations of the actuators at a particular location.

Extension cable (EXC1, EXC2) for use in an ultrasound system. The extension cable includes a first electrical connector (FEC) for connecting to a corresponding ultrasound transducer connector (UTC), a second electrical connector (SEC) for connecting to a corresponding console connector (CC), an electrical circuit (ECCT), and an electrical cable (ECAB). The electrical circuit (ECCT) provides a multiple-state output (MSOP), the multiple states being voltage levels (V.sub.1, V.sub.2, V.sub.3) corresponding to each of i) the electrical circuit (ECCT) not being electrically connected to the console connector (CC), ii) the electrical circuit (ECCT) being electrically connected to the console connector (CC) and the ultrasound transducer connector (UTC) not being electrically connected to the first electrical connector (FEC), and iii) the electrical circuit (ECCT) being electrically connected to the console connector (CC) and the ultrasound transducer connector (UTC) being electrically connected to the first electrical connector (FEC).

An apparatus for disinfecting products is disclosed herein. The apparatus comprises a tank for holding a liquid for receiving microorganisms from the products. The tank comprises a barrier separating the tank to provide two regions of liquid, the two regions of liquid comprising a first region and a second region, wherein the first region is arranged to provide an open channel for the liquid through the tank to enable a product to be carried into, along, and out of a flowpath through the channel; and the second region holds liquid adjacent to at least one ultrasonic transducer for providing ultrasonic energy to the product via the liquid in the second region and through the barrier.

The invention relates to an ultrasonic transducer comprising an acoustic transformer, wherein the acoustic transformer has a transformer body having a hollow space, and there lies between the hollow space and the medium a membrane, whose center oscillates freely. Furthermore, the invention relates to methods for manufacturing such an acoustic transformer.

Disclosed is a broadband underwater acoustic transceiver device. The device can be used in particular for positioning, detection, range finding or underwater acoustic communication. The device coaxially combines, within a transceiver device, a Tonpilz transducer and a FFR transducer, the FFR being arranged in front of the transmission face/horn of the Tonpilz transducer. In such a configuration, the Tonpilz horn also acts as reflective tape for the FFR transducer, forming a common tape-horn element. Furthermore, an annular baffle surrounding the Tonpilz pillar creates a Helmholtz cavity for broadening the emission band towards the low frequencies.

A method for manufacturing an ultrasound generator with high laser-induced damage threshold is disclosed. The method includes forming an uncured prepolymer polydimethylsiloxane (PDMS) film on a substrate; spraying a solution containing light-absorbing nano-particles onto a surface of the uncured PDMS film, and then permeating the light-absorbing nano-particles into the uncured PDMS film; and curing the uncured PDMS film containing the light-absorbing nano-particles spatially distributed therein to form a composite film of nano-particles and PDMS, wherein the light-absorbing nano-particles permeated and diffused into the uncured PDMS film are dispersed such that a mean distance between the light-absorbing nano-particles in the PDMS film is substantially equal to or larger than a thermal diffusion length during a temporal width of an irradiation laser pulse, thus alleviating an exceedingly high thermal load, which can cause film damage or ablation, caused by nano-particles agglomerated or densely packed with a particle-to-particle mean distance smaller than the thermal diffusion length, ultimately resulting in the increase of laser-induced damage threshold and the maximum-available ultrasound output from the photoacoustic ultrasound generator.

An apparatus for novel technique of high-speed magnetic recording based on manipulating pinning layer in magnetic tunnel junction-based memory by using terahertz magnon laser is provided. The apparatus comprises a terahertz writing head configured to generate a tunable terahertz writing signal and a memory cell including a spacer that comprises a thickness configured based on Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction. The memory cell comprises two separate memory states: a first binary state and a second binary state; wherein the first binary memory state corresponds to a ferromagnetic sign of the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction corresponding to a first thickness value of the spacer; and wherein the second binary memory state corresponds to an antiferromagnetic sign of the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction corresponding to a second thickness value of the spacer. The thickness of the spacer is manipulated by the tunable terahertz writing signal.

A non-contact handling tool for gripping an object, the tool comprising an ultrasound transducer extending between a reflective face and a gripping face configured to emit ultrasound forming, in a near field area of the gripping face, an over-pressure wave, and a fluid suction system configured to suction a fluid towards the gripping face, forming in said near field area an under-pressure. The fluid suction system comprises at least one fluid suction channel disposed in the ultrasound transducer. The ultrasound transducer is configured to operate at a frequency corresponding to the first harmonic resonant frequency of the transducer or at a forced anti-resonant frequency near the first harmonic frequency.

A non-contact handling tool for gripping an object, the tool comprising an ultrasound transducer extending between a reflective face and a gripping face configured to emit ultrasound forming, in a near field area of the gripping face, an over-pressure wave, and a fluid suction system configured to suction a fluid towards the gripping face, forming in said near field area an under-pressure. The fluid suction system comprises at least one fluid suction channel disposed in the ultrasound transducer. The ultrasound transducer is configured to operate at a frequency corresponding to the first harmonic resonant frequency of the transducer or at a forced anti-resonant frequency near the first harmonic frequency.