The present invention discloses an ultrasonic atomization piece, a manufacturing method thereof, an ultrasonic atomizer and electronic cigarette. The ultrasonic atomization piece comprises a ceramic substrate, which is provided with an upper silver layer on the upper surface and with a lower silver layer on the lower surface. The ceramic substrate, the upper silver layer and the lower silver layer form piezoelectric ceramic, and glass glaze for protecting the upper silver layer is provided on the upper surface of the piezoelectric ceramic; and a tobacco tar adsorption layer is provided on the upper surface of the glass glaze to form a piezoelectric ceramic component, and the tobacco tar adsorption layer is used for adsorbing, guiding and transferring tobacco tar. In the present invention, as the tobacco tar adsorption layer and the ultrasonic atomization piece body are integrated together, the contact between the ultrasonic atomization piece and tobacco tar is better in an electronic cigarette assembly process, and thus the atomization effect is improved.

An ultrasonic transducer (1) includes a base portion (14), a piezoelectric element (11), a vibration plate (10), and a resonator (12). The resonator (12) is joined to a first surface (21) of the vibration plate (10). A surface, of the piezoelectric element (11), on a side opposite to a side on which the piezoelectric element is joined to the base portion (14), is joined to a second surface (22) of the vibration plate (10). A through-hole (30) is formed in the piezoelectric element (11) so as to penetrate therethrough in a thickness direction of the vibration plate (10). In a planar direction orthogonal to the thickness direction of the vibration plate (10), a joined portion (40) between the vibration plate (10) and the resonator (12) is located inward of a node (20) of vibration of the vibration plate (10), and the through-hole (30) is located inward of the node (20).

A vibration device includes an internal vibration body to amplify a vibration, a piezoelectric element connected to one end of the internal vibration body, and a light transmission body connected to an another end of the internal vibration body. The vibration device further includes an external vibration body including a first connection portion connected to the light transmission body and a second connection portion extending outward of the light transmission body from the first connection portion to attenuate the vibration.

A method of measuring dissociation of the biomolecular bonds in one or multiple sample wells using super-resolution force spectroscopy (SURFS). SURFS utilizes precise ultrasound radiation to exert an acoustic radiation force on the biomolecular bonds labeled with magnetic particles. The force-induced dissociation of the protein bonds labeled with magnetic particles may be measured as a reduced magnetic signal by a magnetic sensor. The force resolution allows for differentiating biomolecular bonds with an extremely high level of precision. The biomolecular bonds include protein-protein, protein-nucleic acid, nucleic acid-nucleic acid, small molecule-protein, and small molecule-nucleic acid interactions.

A piezoelectric sounding component includes a diaphragm that includes a metal plate and a piezoelectric body formed on the metal plate. A casing includes a bottom wall and side walls defining an open sound chamber. The casing also includes a supporting portion on which the diaphragm is supported to cover the open end of the chamber. A terminal is formed on the casing and serves to apply voltage to the diaphragm. An elastic adhesive fixes the diaphragm to the supporting portion and a conductive adhesive is formed on the elastic adhesive and electrically connects the terminal and the diaphragm. An elastic sealing material forms a frame-like sealing portion that seals a gap between outer peripheral edges of the diaphragm and an inner surfaces of the casing. The elastic sealing material also used to cover at least part of an exposed surface of the piezoelectric body to form a protective portion that protects the surface of the piezoelectric body. The protective portion contacts the sealing portion.

A transducer is provided, which includes a substrate, wherein a cavity is defined at least partially through the substrate, at least one stopper structure arranged within the cavity, a support layer arranged over the at least one stopper structure and the cavity to seal the cavity, and a piezoelectric functional arrangement arranged on the support layer. According to further embodiments of the present invention, a method for forming a transducer is also provided.

A buzzer unit 4 includes a case 10, a vibrating element 11, and a pressing member 14. The case 10 includes a vibrating plate 28 in which no through-holes are formed. The case 10 includes a storage space 22 formed therein on the lower side X2 of the vibrating plate 28. The vibrating element 11 faces the vibrating plate 28 in the vertical direction X inside the storage space 22, produces vibration as a result of voltage being applied thereto, and as a result, causes the vibrating plate 28 to vibrate. The pressing member 14 is stored in the storage space 22, and presses the vibrating element 11 against the vibrating plate 28.

The present invention discloses a mechanically strengthened piezoelectric sensor for Structural Health Monitoring applications. The sensor includes a two-sided piezo ceramic component, a sensor encapsulation, and at least two wires. The sensor encapsulation has an indented side that forms a recessed area. The recessed area has a supporting structure. The two-sided piezo ceramic component is mounted into the recessed area of the encapsulation and is supported by the supporting structure with the side facing outwards slightly lower than the upper edge of the recessed area. The supporting structure of the encapsulation provides mechanical strength to the piezo ceramic component. The wires are attached to the electrodes of the piezo ceramic component and extend out of the encapsulation. Alternatively, the mechanically strengthened piezoelectric sensor may further include a Printed Circuit Board (PCB). The piezo ceramic component is mounted on the PCB. Then, the PCB is mounted into the recessed area of the encapsulation and is supported by the supporting structure with the side facing outwards slightly lower than the upper edge of the encapsulation.

The present disclosure involves a method and apparatus for attaching two electrical dies by wire bonding and then encasing the assembly in a protective casting that works by arranging two dies into a fixture conducive to wire bonding. Doped epoxy may be immediately dispensed over the assembly to form a near-net-shape protective cover, or Drive Can.

Example acoustic emission sensors with integral acoustic generators are disclosed. Example apparatus disclosed herein include an acoustic receiver, an acoustic generator, and a wear plate. The acoustic generator is disposed adjacent to the acoustic receiver. The wear plate is acoustically coupled to the acoustic receiver and to the acoustic generator. The wear plate is to convey acoustic energy from the acoustic generator to the acoustic receiver through a structure under test to which the apparatus is coupled. The wear plate includes first acoustic isolation to impede transmission of acoustic energy from the acoustic generator to the acoustic receiver through the wear plate.