摘要:
Touch sensors with one or more piezoelectric elements and devices containing such touch sensors are presented. The touch sensor contains keys that are independently actuated. Contact with a key provides tactile feedback through the piezoelectric element to the user. Each key provides an individual tactile feedback pattern that is dependent on the particular key contacted as well as the function of the key at the time of contact. Actuation of the key provides a different tactile feedback pattern. The piezoelectric element is bonded directly to a printed circuit board, on which electronic components are also mounted.
摘要:
An electronic device (100) comprises a housing (112), an input (118, 122) coupled mechanically to the housing for receiving data, an output (114, 118) coupled mechanically to the housing for presenting information to a user of the electronic device in at least one of an audio and visual mode, an electronic circuit (210) coupled mechanically to the housing for providing intelligent operations that receives the data from the input and provides the information to the output, and at least two electromechanical transducers (226), each providing a tactile alert to the user in response to the data, the tactile alerts occurring simultaneously or in succession.
摘要:
An exemplary composition of matter and method for making high-efficiency, low-loss capacitors is disclosed as including inter alia a B2O3—Bi2O3—ZnO glass in admixture with material typically comprising about 30-40 wt % cubic phase (Bi0.5Zn0.5)(Zn0.5Nb1.5)O7 and about 60-70 wt % pseudo-orthorhombic phase Bi2(Zn1/3Nb1/3)2O7 (e.g., “BZN”). The mixture effectively reduces the sintering temperature of BZN from the range of about 950-1050° C. to the range of about 850-900° C., thereby rendering BZN suitable for cofiring with, for example, existing LTCC dielectrics. Disclosed features and specifications may be variously controlled, configured, adapted or otherwise optionally modified to further improve or otherwise optimize the sintering temperature of BZN and/or BZN-based materials. Exemplary embodiments of the present invention representatively provide for embedded high-efficiency, low-loss capacitors that may be readily integrated with existing portable ceramic technologies for the improvement of dielectric properties, device package form factors, weights and/or other manufacturing, device or material performance metrics.
摘要:
A mobile communication terminal (10) is provided. The mobile communication terminal (10) includes a touch sensitive liquid crystal display (LCD) module (12) having a predetermined plurality of touch sensitive areas (20, 22) and a plurality of piezoelectric elements (106, 108, 110, 112) disposed along a periphery of a cover glass of the display module (12) wherein activation of the piezoelectric elements provides tactile feedback to a user of activation of a portion of the touch sensitive LCD module (12) by the user.
摘要:
An exemplary system and method for manufacturing micropump systems having integrated piezoresistive sensors is disclosed as including inter alia: a substrate, an inlet channel, an outlet channel, a pumping cavity, a first valve for permitting fluid flow from the inlet channel to the pumping cavity and restricting backflow of purged fluid from the pumping cavity to the inlet channel; a second valve for permitting fluid flow from the pumping cavity to an outlet channel and restricting backflow of purged fluid from the outlet channel to the pumping cavity; a pump actuator element; a pressure sensing cavity surface capable of at least partial mechanical deformation; a plurality of piezoresistors disposed within the sensing cavity; a plurality of contact pads; a plurality of conductive pathways connecting the piezoresistors and the contact pads; and a substantially monolithic device package, wherein the sensing cavity is substantially contained within the micropump device package. Disclosed features and specifications may be variously controlled, adapted or otherwise optionally modified to improve micropump operation in any microfluidic application. Exemplary embodiments of the present invention representatively provide for piezoresistive pressure sensors that may be readily integrated with existing portable ceramic technologies for the improvement of device package form factors, weights and other manufacturing and/or device performance metrics.
摘要:
A microwave device has a monolithic microwave integrated circuit (MMIC) disposed therein for applying microwave radiation to a microfluidic structure, such as a chamber, defined in the device. The microwave radiation from the MMIC is useful for heating samples introduced into the microfluidic structure and for effecting lysis of cells in the samples. Microfabrication techniques allow the fabrication of MMICs that perform heating and cell lysing of samples having volumes in the microliter to picoliter range.
摘要:
An exemplary method for making a micropump device is disclosed as providing inter alia a substrate (300), an inlet opening (310), and outlet opening (340), a pump chamber (370) and flapper valves (350, 360). The fluid inlet channel (310) is generally configured to flow a fluid through/around the inlet opening flapper valve (350). The outlet opening flapper valve (360) generally provides means for preventing or otherwise decreasing the incidence of outlet fluid re-entering either the pumping cavity (370) and/or the fluid inlet channel (310). Accordingly, the reduction of backflow generally tends to enhance overall pumping efficiency. Disclosed features and specifications may be variously controlled, adapted or otherwise optionally modified to improve micropump operation in any microfluidic application. Exemplary embodiments of the present invention representatively provide for substantially self-priming gas/liquid micropumps that may be readily integrated with existing portable ceramic technologies for the improvement of device package form factors, weights and other manufacturing and/or device performance metrics.
摘要:
A multilayer ceramic micropump including a monolithic ceramic package formed of a plurality of ceramic layers defining therein an integrated first ball check valve, and a second ball check valve in microfluidic communication with the first ball check valve, and an actuator characterized as actuating a pumping motion, thereby pumping fluids through the first ball check valve and the second ball check valve.
摘要:
A multilayered microfluidic device having a substantially monolithic structure is formed by sintering together a plurality of green-sheet layers. The substantially monolithic structure has an inlet port for receiving fluid, an outlet port for releasing fluid, and an interconnection between the inlet port and the outlet port. The substantially monolithic structure may also include a variety of components to enable useful interaction with the fluid, such as electrically conductive pathways, heaters, fluid sensors, fluid motion transducers, and optically transmissive portions. The components are preferably fabricated using thick-film or green-sheet technology and are preferably co-fired with and sintered to the green-sheet layers to become integral with the substantially monolithic structure.
摘要:
A multilayer ceramic micropump including a monolithic ceramic package formed of a plurality of ceramic layers defining therein an integrated first ball check valve, and a second ball check valve in microfluidic communication with the first ball check valve, and an actuator characterized as actuating a pumping motion, thereby pumping fluids through the first ball check valve and the second ball check valve.