摘要:
A quartz resonator flow cell has a piezoelectric quartz wafer with an electrode, pads, and interconnects disposed on a first side thereof. The piezoelectric quartz wafer has a second electrode disposed on a second side thereof, the second electrode opposing the first electrode. A substrate is provided having fluid ports therein and the piezoelectric quartz wafer is mounted to the substrate such that the second side thereof faces the substrate with a cavity being formed between the substrate and the wafer. The fluid ports in the substrate are aligned with the electrode on the second side of the piezoelectric quartz wafer which is in contact with the cavity.
摘要:
A method for fabricating VHF and/or UHF quartz resonators (for higher sensitivity) in a cartridges design with the quartz resonators requiring much smaller sample volumes than required by conventional resonators, and also enjoying smaller size and more reliable assembly. MEMS fabrication approaches are used to fabricate with quartz resonators in quartz cavities with electrical interconnects on a top side of a substrate for electrical connection to the electronics preferably through pressure pins in a plastic module. An analyte is exposed to grounded electrodes on a single side of the quartz resonators, thereby preventing electrical coupling of the detector signals through the analyte. The resonators can be mounted on the plastic cartridge or on arrays of plastic cartridges with the use of inert bonding material, die bonding or wafer bonding techniques. This allows the overall size, cost, and required biological sample volume to be reduced while increasing the sensitivity for detecting small mass changes.
摘要:
In one embodiment, a cascaded monolithic crystal filter is provided. A first filter includes two resonators having a pair of electrodes with the monolithic crystal between. At least one electrode has a periphery which includes a feature capable of shifting a frequency associated with an anharmonic mode in the filter. The filter has a second resonator acoustically coupled to the first resonator. A second filter is cascaded with the first filter. The second filter includes a pair of acoustically coupled resonators.
摘要:
An on-chip navigation system, optionally combined with GPS (Global Positioning System) and/or an imaging array, which incorporates MEMS (MicroElectroMechanical Systems) components is possible by the use of careful material selection and novel bonding techniques used during fabrication. The use of MEMS components permits many of the components of a typical inertial navigation system to reside on a single chip. Because the components are in close proximity, the components can then be used to monitor the environmental changes of the chip, such as temperature and vibration, and correct for the resulting offsets of other components. This allows improved system performance even if the individual sensor components are not ideal.
摘要:
A method for manufacturing a resonator is presented in the present application. The method includes providing a handle substrate, providing a host substrate, providing a quartz substrate comprising a first surface opposite a second surface, applying interposer film to the first surface of the quartz substrate, bonding the quartz substrate to the handle substrate wherein the interposer film is disposed between the quartz substrate and the handle substrate, thinning the second surface of the quartz substrate, removing a portion of the bonded quartz substrate to expose a portion of the interposer film, bonding the quartz substrate to the host substrate, and removing the handle substrate and the interposer film, thereby releasing the quartz substrate.
摘要:
The present invention relates to a method of manufacturing a cloverleaf microgyroscope containing an integrated post comprising: attaching a post wafer to a resonator wafer, forming a bottom post from the post wafer being attached to the resonator wafer, preparing a base wafer with through-wafer interconnects, attaching the resonator wafer to the base wafer, wherein the bottom post fits into a post hole in the base wafer, forming a top post from the resonator wafer, wherein the bottom and top post are formed symmetrically around the same axis, and attaching a cap wafer on top of the base wafer.
摘要:
A method for tuning an electro-mechanical device such as a MEMS device is disclosed. The method comprises operating a MEMS device in a depressurized system and using FIB micromachining to remove a portion of the MEMS device. Additionally, a method for tuning a plurality of MEMS devices by depositing an active layer and then removing a portion of the active layer using FIB micromachining. Also, a method for tuning a MEMS device and vacuum packaging the MEMS device in situ are provided.
摘要:
The present invention relates to a method of manufacturing a cloverleaf microgyroscope containing an integrated post comprising: attaching a post wafer to a resonator wafer, forming a bottom post from the post wafer being attached to the resonator wafer, attaching the resonator wafer to a base wafer, wherein the bottom post fits into a post hole in the base wafer, forming a top post from the resonator wafer, wherein the bottom and top post are formed symmetrically around the same axis, preparing a cap with backside metallization, and attaching a cap wafer on top of the base wafer. The present invention relates further to a gyroscope containing an integrated post with on or off-chip electronics.
摘要:
A method for manufacturing a resonator is presented in the present application. The method includes providing a handle substrate, providing a host substrate, providing a quartz substrate comprising a first surface opposite a second surface, applying interposer film to the first surface of the quartz substrate, bonding the quartz substrate to the handle substrate wherein the interposer film is disposed between the quartz substrate and the handle substrate, thinning the second surface of the quartz substrate, removing a portion of the bonded quartz substrate to expose a portion of the interposer film, bonding the quartz substrate to the host substrate, and removing the handle substrate and the interposer film, thereby releasing the quartz substrate.
摘要:
A disk resonator gyroscope includes a quartz base, a quartz resonator disk having a central pillar connected to the base, the quartz resonator disk having a surface facing the base and having plurality of circumferential slots in the surface of the quartz resonator disk around the central pillar, and an electrode comprised of quartz and connected to the base outside of an outer edge of the resonator disk.