摘要:
A method for forming a device on a substrate of silicon includes forming a first conductive layer onto the substrate, and forming a piezoelectric layer on the first portion of a first conductive layer. A second electrode is formed on the piezoelectric layer, and a backside portion of the substrate under the piezoelectric layer and the first conductive layer is removed using a crystal orientated dependent etch.
摘要:
An apparatus, according to one aspect, may include a chromatograph and a bulk acoustic resonator. The chromatograph may include a channel that is defined at least partially in a monolithic substrate. The channel may have an inlet to receive a sample and an outlet. A chromatography material may be included in the channel. The bulk acoustic resonator may have a first electrode and a second electrode that has a chemically functionalized surface. The chemically functionalized surface may be included in a chamber that is defined at least partially in the monolithic substrate and that is coupled with the outlet of the channel. Methods of making and using such apparatus, and systems including such apparatus, are also disclosed.
摘要:
An arrangement, a method and a system to read information stored in a layer of ferroelectric media. The arrangement includes a layer including a ferroelectric media having one or more ferroelectric domains holding bit charges, a domain corresponding to information; a probe having a tip, wherein the media and the tip are adapted to move relative to one another such that the tip scans the ferroelectric domains of the media while applying a contact force to the domains to generate a direct piezoelectric effect within the domains; and circuitry coupled to the tip and adapted to generate a signal in response to an electrical coupling between the tip and the domains while scanning the tip in contact with the domains, the signal corresponding to a readout signal for ferroelectric bit charges stored in the media.
摘要:
An apparatus, according to one aspect, may include a chromatograph and a bulk acoustic resonator. The chromatograph may include a channel that is defined at least partially in a monolithic substrate. The channel may have an inlet to receive a sample and an outlet. A chromatography material may be included in the channel. The bulk acoustic resonator may have a first electrode and a second electrode that has a chemically functionalized surface. The chemically functionalized surface may be included in a chamber that is defined at least partially in the monolithic substrate and that is coupled with the outlet of the channel. Methods of making and using such apparatus, and systems including such apparatus, are also disclosed.
摘要:
Provided herein are media for storing information and methods of forming such media. A strontium ruthenate (SRO) layer is provided. In certain embodiments, a titanium terminated (Ti-terminated) surface is formed on the SRO layer, and a lead zirconate titanate (PZT) layer is formed on the Ti-terminated surface. In other embodiments, a Ti-terminated surface is formed on the SRO layer, a lead titanate (PTO) layer is formed on the Ti-terminated surface, and a PZT layer is formed on the PTO layer. Preferably, the PZT layer is grown on the Ti-terminated surface, or the PTO layer, by step-flow or layer-by-layer growth, so that the resulting media has an atomically smooth surface.
摘要:
A media for an information storage device comprises a substrate of single-crystal silicon, a buffer layer of an epitaxial single crystal insulator formed over the substrate, a bottom electrode layer of an epitaxial single crystal conductor formed over the buffer layer, a ferroelectric layer of an epitaxial single crystal ferroelectric material formed over the bottom electrode layer, and an overlayer of an epitaxial single crystal material formed over the ferroelectric layer. Dipole charges generally having a first orientation exist at an interface between the bottom electrode layer and the ferroelectric layer includes, while dipole charges generally having a second orientation opposite the first orientation exist at an interface between the ferroelectric layer and the overlayer includes.
摘要:
A method and system for forming FBAR filters for different frequency bands with film stacks of different thicknesses, where at least some layers of different thicknesses are formed substantially at the same time, during a process operation are described herein.
摘要:
A film bulk acoustic resonator (FBAR) comprises a piezoelectric film sandwiched between a top electrode and a bottom electrode. A temperature sensor is provided to sense a temperature to determine a temperature induced frequency drift for the FBAR. A voltage controller operatively connected to the temperature sensor supplies a direct current (DC) bias voltage to the FBAR to induce an opposite voltage induced frequency drift to compensate for the temperature induced frequency drift.
摘要:
Systems and methods for detecting the presence of biomolecules in a sample using biosensors that incorporate resonators which have functionalized surfaces for reacting with target biomolecules. In one embodiment, a device includes a piezoelectric resonator having a functionalized surface configured to react with target molecules, thereby changing the mass and/or charge of the resonator which consequently changes the frequency response of the resonator. The resonator's frequency response after exposure to a sample is compared to a reference, such as the frequency response before exposure to the sample, a stored baseline frequency response or a control resonator's frequency response.
摘要:
Systems and methods for detecting the presence of biomolecules in a sample using biosensors that incorporate resonators which have functionalized surfaces for reacting with target biomolecules. In one embodiment, a device includes a piezoelectric resonator having a functionalized surface configured to react with target molecules, thereby changing the mass and/or charge of the resonator which consequently changes the frequency response of the resonator. The resonator's frequency response after exposure to a sample is compared to a reference, such as the frequency response before exposure to the sample, a stored baseline frequency response or a control resonator's frequency response.